Checklist of the vascular plants of IDAHO
(excluding grasses and their allies)

ACERACEAE
Acer glabrum Torr.
   Rocky Mountain maple
Acer glabrum var. douglasii (Hook.) Dippel
   Douglas maple
Acer glabrum var. glabrum Torr.
   Rocky Mountain maple
Acer grandidentatum Nutt.
   bigtooth maple
Acer grandidentatum var. grandidentatum Nutt.
   bigtooth maple
Acer negundo L.
   boxelder
Acer negundo var. interius (Britt.) Sarg.
   boxelder maple
Acer negundo var. violaceum (Kirchn.) Jaeger
   boxelder

ACORACEAE
Acorus americanus (Raf.) Raf.
   sweetflag
Acorus calamus var. americanus (Raf.) H.D. Wulff.
   = Acorus americanus

ALISMATACEAE
Alisma gramineum Lej.
   narrowleaf water plantain
Alisma triviale Pursh
   northern water plantain
Machaerocarpus californicus (Torr. ex Benth.) Small
   California damsonium
Sagittaria cuneata Sheldon
   arumleaf arrowhead
Sagittaria latifolia Willd.
   broadleaf arrowhead
Sagittaria latifolia var. latifolia Willd.
   broadleaf arrowhead

AMARANTHACEAE
Amaranthus albus L.
   prostrate pigweed
Amaranthus blitoides S. Wats.
   mat amaranth
Amaranthus californicus (Moq.) S. Wats.
   California amaranth
Amaranthus hybridus L.
   slim amaranth
Amaranthus powellii S. Wats.
   Powell's amaranth
Amaranthus retroflexus L.
   redroot amaranth
Amaranthus rudis Sauer
   tall amaranth

ANACARDIACEAE
Rhus glabra L.
   smooth sumac
Rhus radicans var. rydbergii (Small ex Rydb.) Rehd.
   = Toxicodendron rydbergii
Rhus trilobata Nutt.
   skunkbush sumac
Rhus trilobata var. trilobata Nutt.
   skunkbush sumac
Toxicodendron radicans var. rydbergii (Small ex Rydb.) Erskine
   = Toxicodendron rydbergii
Toxicodendron rydbergii (Small ex Rydb.) Greene
   western poison ivy

APOCYNACEAE
Apocynum X floribundum Greene (pro sp.)
   intermediate dogbane
Apocynum androsaemifolium L.
   spreading dogbane
Apocynum androsaemifolium ssp. androsaemifolium L.
   spreading dogbane
Apocynum androsaemifolium ssp. androsaemifolium var. androsaemifolium L.
   spreading dogbane
Apocynum androsaemifolium ssp. androsaemifolium var. incanum A. DC.
   spreading dogbane
Apocynum androsaemifolium ssp. pumilum (Gray) Boivin
   spreading dogbane
Apocynum androsaemifolium ssp. pumilum var. pumilum Gray
   low dogbane
Apocynum cannabinum L.
   Indianhemp
Apocynum medium Greene
   = Apocynum X floribundum
Apocynum sibiricum Jacq.
   = Apocynum cannabinum

ARACEAE
Lysichiton americanus Hulten & St. John
   American skunkcabbage

ARALIACEAE
Aralia nudicaulis L.
   wild sarsaparilla
Echinopanax horridus (Sm.) Dcne. & Planch. ex H.A.T. Harms
   = Oplopanax horridus
Oplopanax horridus Miq.
   devilsclub

ARISTOLOCHIACEAE
Asarum caudatum Lindl.
   British Columbia wildginger
Asarum caudatum var. caudatum Lindl.
   British Columbia wildginger

ASCLEPIADACEAE
Asclepias asperula (Dcne.) Woods.
   spider milkweed
Asclepias asperula ssp. asperula (Dcne.) Woods.
   spider milkweed
Asclepias asperula ssp. capricornu (Woods.) Woods.
   antelopehorns
Asclepias cryptoceras S. Wats.
   pallid milkweed
Asclepias cryptoceras ssp. davisii (Woods.) Woods.
   Davis' milkweed
Asclepias fascicularis Dcne.
   Mexican whorled milkweed
Asclepias incarnata L.
   swamp milkweed
Asclepias speciosa Torr.
   showy milkweed
Asclepias subverticillata (Gray) Vail
   whorled milkweed
Asclepiodora decumbens (Nutt.) Gray
   = Asclepias asperula ssp. capricornu

ASPLENIACEAE
Asplenium trichomanes L.
   maidenhair spleenwort
Asplenium trichomanes-ramosum L.
   brightgreen spleenwort

AZOLLACEAE
Azolla caroliniana Willd.
   Carolina mosquitofern

BALSAMINACEAE
Impatiens aurella Rydb.
   paleyellow touchmenot
Impatiens capensis Meerb.
   jewelweed
Impatiens ecalcarata Blank.
   spurless touchmenot

BERBERIDACEAE
Berberis aquifolium Pursh
   = Mahonia aquifolium
Berberis nervosa Pursh
   = Mahonia nervosa var. nervosa
Berberis repens Lindl.
   = Mahonia repens
Berberis vulgaris L.
   common barberry
Mahonia aquifolium (Pursh) Nutt.
   hollyleaved barberry
Mahonia nervosa (Pursh) Nutt.
   Cascade Oregongrape
Mahonia nervosa var. nervosa (Pursh) Nutt.
   cascade Oregongrape
Mahonia repens (Lindl.) G. Don
   Oregongrape

BETULACEAE
Alnus incana (L.) Moench
   mountain alder
Alnus incana ssp. tenuifolia (Nutt.) Breitung
   thinleaf alder
Alnus rhombifolia Nutt.
   white alder
Alnus rubra Bong.
   red alder
Alnus viridis (Vill.) Lam. & DC.
   sitka alder
Alnus viridis ssp. sinuata (Regel) A.& D. Love
   Sitka alder
Betula X sargentii Dugle
   Sargent's birch
Betula X utahensis Britt. (pro sp.)
   northwestern paper birch
Betula glandulosa Michx.
   = Betula nana
Betula nana L.
   bog birch
Betula occidentalis Hook.
   water birch
Betula papyrifera Marsh.
   paper birch
Betula papyrifera var. commutata (Regel) Fern.
   western paper birch
Betula pumila L.
   swamp birch
Betula pumila var. glandulifera Regel
   glandulose birch
Corylus cornuta Marsh.
   beaked hazelnut
Corylus cornuta var. californica (A. DC.) Sharp
   California hazelnut

BORAGINACEAE
Amsinckia lycopsoides Lehm.
   tarweed fiddleneck
Amsinckia menziesii (Lehm.) A. Nels. & J.F. Macbr.
   Menzies' fiddleneck
Amsinckia menziesii var. intermedia (Fisch & C.A. Mey.) Ganders
Amsinckia menziesii var. menziesii (Lehm.) A. Nels. & J.F. Macbr.
Amsinckia tessellata Gray
   bristly fiddleneck
Anchusa officinalis L.
   common bugloss
Asperugo procumbens L.
   madwort
Buglossoides arvensis (L.) I.M. Johnston
   corn gromwell
Cryptantha affinis (Gray) Greene
   quill catseye
Cryptantha ambigua (Gray) Greene
   basin catseye
Cryptantha breviflora (Osterhout) Payson
   Uinta basin catseye
Cryptantha celosioides (Eastw.) Payson
   buttecandle
Cryptantha circumscissa (Hook. & Arn.) I.M. Johnston
   cushion catseye
Cryptantha circumscissa var. circumscissa (Hook. & Arn.) I.M. Johnston
   cushion catseye
Cryptantha echinella Greene
   prickly catseye
Cryptantha fendleri (Gray) Greene
   sanddune catseye
Cryptantha flaccida (Dougl. ex Lehm.) Greene
   weakstem catseye
Cryptantha flavoculata (A. Nels.) Payson
   roughseed catseye
Cryptantha gracilis Osterhout
   narrowstem catseye
Cryptantha humilis (Gray) Payson
   roundspike catseye
Cryptantha intermedia (Gray) Greene
   Clearwater catseye
Cryptantha interrupta (Greene) Payson
   Elko catseye
Cryptantha kelseyana Greene
   Kelsey's catseye
Cryptantha propria (A. Nels. & J.F. Macbr.) Payson
   Malheur catseye
Cryptantha pterocarya (Torr.) Greene
   wingnut catseye
Cryptantha pterocarya var. pterocarya (Torr.) Greene
   wingnut catseye
Cryptantha recurvata Coville
   curvenut catseye
Cryptantha rugulosa (Payson) Payson
   wrinkled catseye
Cryptantha salmonensis (A. Nels. & J.F. Macbr.) Payson
   Salmon River catseye
Cryptantha scoparia A. Nels.
   Pinyon Desert catseye
Cryptantha simulans Greene
   pinewoods catseye
Cryptantha sobolifera Payson
   Waterton Lakes catseye
Cryptantha spiculifera (Piper) Payson
   Snake River catseye
Cryptantha torreyana (Gray) Greene
   Torrey's catseye
Cryptantha torreyana var. torreyana (Gray) Greene
   Torrey's catseye
Cryptantha watsonii (Gray) Greene
   Watson's catseye
Cynoglossum officinale L.
   gypsyflower
Dasynotus daubenmirei I.M. Johnston
   Rocky Mountain whitethroat
Echium vulgare L.
   common vipersbugloss
Eritrichium nanum (Vill.) Schrad. ex Gaudin
   arctic alpine forget me not
Eritrichium nanum var. aretioides (Cham.) Herder
   alpine forget me not
Eritrichium nanum var. elongatum (Rydb.) Cronq.
   arctic alpine forget me not
Hackelia ciliata (Dougl. ex Lehm.) I.M. Johnston
   Okanogan stickseed
Hackelia cinerea (Piper) I.M. Johnston
   gray stickseed
Hackelia cronquistii J.L. Gentry
   Cronquist's stickseed
Hackelia cusickii (Piper) Brand
   Cusick's stickseed
Hackelia davisii Cronq.
   Davis' stickseed
Hackelia deflexa (Wahlenb.) Opiz
   nodding stickseed
Hackelia diffusa (Lehm.) I.M. Johnston
   spreading stickseed
Hackelia diffusa var. arida (Piper) R.L. Carr
   sagebrush stickseed
Hackelia diffusa var. diffusa (Lehm.) I.M. Johnston
   spreading stickseed
Hackelia floribunda (Lehm.) I.M. Johnston
   manyflower stickseed
Hackelia hispida (Gray) I.M. Johnston
   showy stickseed
Hackelia hispida var. hispida (Gray) I.M. Johnston
   showy stickseed
Hackelia ophiobia R.L. Carr
   Owyhee River stickseed
Hackelia patens (Nutt.) I.M. Johnston
   common stickseed
Hackelia patens var. patens (Nutt.) I.M. Johnston
   spotted stickseed
Heliotropium curassavicum L.
   salt heliotrope
Heliotropium curassavicum var. obovatum DC.
   seaside heliotrope
Lappula occidentalis (S. Wats.) Greene
   flatspine stickseed
Lappula occidentalis var. occidentalis (S. Wats.) Greene
   desert stickseed
Lappula squarrosa (Retz.) Dumort.
   European stickseed
Lithospermum arvense L.
   = Buglossoides arvensis
Lithospermum ruderale Dougl. ex Lehm.
   western gromwell
Mertensia alpina (Torr.) G. Don
   alpine bluebells
Mertensia bella Piper
   beautiful bluebells
Mertensia brevistyla S. Wats.
   shortstyle bluebells
Mertensia campanulata A. Nels.
   Idaho bluebells
Mertensia ciliata (James ex Torr.) G. Don
   mountain bluebells
Mertensia ciliata var. ciliata (James ex Torr.) G. Don
   tall fringe bluebells
Mertensia cusickii Piper
   Toiyabe bluebells
Mertensia lanceolata (Pursh) DC.
   lanceleaf bluebells
Mertensia lanceolata var. nivalis (S. Wats.) Higgins
   greenleaf bluebells
Mertensia longiflora Greene
   small bluebells
Mertensia oblongifolia (Nutt.) G. Don
   oblongleaf bluebells
Mertensia paniculata (Ait.) G. Don
   tall bluebells
Mertensia paniculata var. borealis (J.F. Macbr.) L.O. Williams
   northern bluebells
Mertensia paniculata var. paniculata (Ait.) G. Don
   tall bluebells
Myosotis asiatica (Vesterg.) Schischkin & Sergievskaja
   Asian forget me not
Myosotis discolor Pers.
   changing forget me not
Myosotis laxa Lehm.
   bay forget me not
Myosotis scorpioides L.
   true forget me not
Myosotis stricta Link ex Roemer & J.A. Schultes
   strict forget me not
Myosotis verna Nutt.
   spring forget me not
Pectocarya penicillata (Hook. & Arn.) A. DC.
   sleeping combseed
Pectocarya setosa Gray
   moth combseed
Plagiobothrys leptocladus (Greene) I.M. Johnston
   finebranched popcornflower
Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnston
   Scouler's popcornflower
Plagiobothrys scouleri var. cusickii (Greene) Higgins
   Cusick's popcornflower
Plagiobothrys scouleri var. hispidulus (Greene) Dorn
   sleeping popcornflower
Plagiobothrys tenellus (Nutt. ex Hook.) Gray
   Pacific popcornflower
Tiquilia nuttallii (Hook.) A. Richards.
   Nuttall's coldenia

CABOMBACEAE
Brasenia schreberi J.F. Gmel.
   watershield

CACTACEAE
Escobaria missouriensis (Sweet) D.R. Hunt
   Missouri foxtail cactus
Escobaria missouriensis var. missouriensis (Sweet) D.R. Hunt
   Missouri foxtail cactus
Escobaria vivipara (Nutt.) Buxbaum
   spinystar
Escobaria vivipara var. vivipara (Nutt.) Buxbaum
   spinystar
Mammillaria vivipara (Nutt.) Haw.
   = Escobaria vivipara var. vivipara
Opuntia erinacea Engelm. & Bigelow ex Engelm.
   grizzlybear pricklypear
Opuntia erinacea var. columbiana (Griffiths) L. Benson
   grizzleybear pricklypear
Opuntia erinacea var. utahensis (Engelm.) L. Benson
   Utah grizzlybear pricklypear
Opuntia fragilis (Nutt.) Haw.
   brittle pricklypear
Opuntia fragilis var. fragilis (Nutt.) Haw.
   pygmy pricklypear
Opuntia macrorhiza Engelm.
   twistspine pricklypear
Opuntia macrorhiza var. macrorhiza Engelm.
   twistspine pricklypear
Opuntia polyacantha Haw.
   plains pricklypear
Opuntia polyacantha var. polyacantha Haw.
   hairspine pricklypear
Pediocactus simpsonii (Engelm.) Britt. & Rose
   Simpson hedgehog cactus
Pediocactus simpsonii var. robustior (Coult.) L. Benson
   snowball cactus
Pediocactus simpsonii var. simpsonii (Engelm.) Britt. & Rose
   Simpson hedgehog cactus

CALLITRICHACEAE
Callitriche hermaphroditica L.
   northern waterstarwort
Callitriche heterophylla Pursh
   larger waterstarwort
Callitriche heterophylla ssp. heterophylla Pursh
   twoheaded waterstarwort
Callitriche palustris L.
   vernal waterstarwort

CAMPANULACEAE
Campanula parryi Gray
   Parry's bellflower
Campanula parryi var. idahoensis McVaugh
   Idaho bellflower
Campanula parryi var. parryi Gray
   Parry's bellflower
Campanula rapunculoides L.
   rampion bellflower
Campanula rotundifolia L.
   bluebell bellflower
Campanula scabrella Engelm.
   rough bellflower
Downingia bacigalupii Weiler
   Bach's calicoflower
Downingia bicornuta Gray
   doublehorn calicoflower
Downingia bicornuta var. bicornuta Gray
   doublehorn calicoflower
Downingia elegans (Dougl. ex Lindl.) Torr.
   elegant calicoflower
Downingia elegans var. brachypetala (Gandog.) McVaugh
   elegant calicoflower
Downingia elegans var. elegans (Dougl. ex Lindl.) Torr.
   elegant calicoflower
Downingia laeta (Greene) Greene
   Great Basin calicoflower
Heterocodon rariflorum Nutt.
   rareflower heterocodon
Howellia aquatilis Gray
   water howellia
Lobelia kalmii L.
   Ontario lobelia
Nemacladus rigidus Curran
   stoutstem threadplant
Porterella carnosula (Hook. & Arn.) Torr.
   fleshy porterella
Triodanis perfoliata (L.) Nieuwl.
   clasping Venus' lookingglass
Triodanis perfoliata var. perfoliata (L.) Nieuwl.
   clasping Venus' lookingglass

CANNABACEAE
Cannabis sativa L.
   marijuana
Humulus americanus Nutt.
   = Humulus lupulus var. lupuloides
Humulus lupulus L.
   common hop
Humulus lupulus var. lupuloides E. Small
   common hop

CAPPARACEAE
Cleome lutea Hook.
   yellow spiderflower
Cleome lutea var. lutea Hook.
   yellow spiderflower
Cleome platycarpa Torr.
   golden spiderflower
Cleome serrulata Pursh
   Rocky Mountain beeplant
Cleomella hillmanii A. Nels.
   Hillman's stinkweed
Cleomella parviflora Gray
   slender cleomella
Cleomella plocasperma S. Wats.
   twisted cleomella
Polanisia dodecandra (L.) DC.
   roughseed clammyweed
Polanisia dodecandra ssp. dodecandra (L.) DC.
   redwhisker clammyweed
Polanisia dodecandra ssp. trachysperma (Torr. & Gray) Iltis
   sandyseed clammyweed

CAPRIFOLIACEAE
Linnaea borealis L.
   twinflower
Linnaea borealis ssp. longiflora (Torr.) Hulten
   longtube twinflower
Lonicera caerulea L.
   sweetberry honeysuckle
Lonicera caerulea var. cauriana (Fern.) Boivin
   bluefly honeysuckle
Lonicera ciliosa (Pursh) Poir. ex DC.
   orange honeysuckle
Lonicera conjugialis Kellogg
   purpleflower honeysuckle
Lonicera involucrata Banks ex Spreng.
   twinberry honeysuckle
Lonicera utahensis S. Wats.
   Utah honeysuckle
Sambucus cerulea Raf.
   = Sambucus nigra ssp. cerulea
Sambucus nigra L.
   European black elder
Sambucus nigra ssp. cerulea (Raf.) R. Bolli
Sambucus racemosa L.
   scarlet elderberry
Sambucus racemosa ssp. pubens var. leucocarpa (Torr. & Gray) Cronq.
   European red elderberry
Sambucus racemosa ssp. pubens var. melanocarpa (Gray) McMinn
   black elderberry
Sambucus racemosa ssp. pubens var. microbotrys (Rydb.) Kearney & Peebles
   European red elderberry
Sambucus racemosa var. racemosa L.
Symphoricarpos albus (L.) Blake
   common snowberry
Symphoricarpos albus var. laevigatus (Fern.) Blake
   common snowberry
Symphoricarpos hesperius G.N. Jones
   trailing snowberry
Symphoricarpos longiflorus Gray
   desert snowberry
Symphoricarpos occidentalis Hook.
   western snowberry
Symphoricarpos oreophilus Gray
   whortleleaf snowberry
Symphoricarpos oreophilus var. utahensis (Rydb.) A. Nels.
   Utah snowberry
Viburnum edule (Michx.) Raf.
   mooseberry viburnum
Viburnum opulus L.
   European cranberrybush viburnum
Viburnum opulus var. americanum Ait.
   American cranberry viburnum

CARYOPHYLLACEAE
Agrostemma githago L.
   common corncockle
Arenaria aculeata S. Wats.
   prickly sandwort
Arenaria capillaris Poir.
   mountain sandwort
Arenaria capillaris ssp. americana Maguire
   fescue sandwort
Arenaria congesta Nutt.
   ballhead sandwort
Arenaria congesta var. cephaloidea (Rydb.) Maguire
   sharptip sandwort
Arenaria congesta var. congesta Nutt.
   ballhead sandwort
Arenaria congesta var. glandulifera Maguire
   gland sandwort
Arenaria congesta var. lithophila (Rydb.) Maguire
   loosehead sandwort
Arenaria congesta var. subcongesta (S. Wats.) S. Wats.
   subcongesta sandwort
Arenaria franklinii Dougl. ex Hook.
   Franklin's sandwort
Arenaria franklinii var. franklinii Dougl. ex Hook.
   Franklin's sandwort
Arenaria kingii (S. Wats.) M.E. Jones
   King's sandwort
Arenaria kingii ssp. uintahensis (A. Nels.) Maguire
   Uinta sandwort
Arenaria serpyllifolia L.
   thymeleaf sandwort
Cerastium arvense L.
   field chickweed
Cerastium beeringianum Cham. & Schlecht.
   Bering chickweed
Cerastium beeringianum ssp. earlei (Rydb.) Hulten
   Earl's chickweed
Cerastium brachypodum (Engelm. ex Gray) B.L. Robins.
   shortstalk chickweed
Cerastium fontanum Baumg.
   common chickweed
Cerastium fontanum ssp. vulgare (Hartman) Greuter & Burdet
   big chickweed
Cerastium glomeratum Thuill.
   sticky chickweed
Cerastium nutans Raf.
   nodding chickweed
Cerastium nutans var. nutans Raf.
   nodding chickweed
Dianthus armeria L.
   Deptford pink
Gypsophila paniculata L.
   babysbreath gypsophila
Holosteum umbellatum L.
   jagged chickweed
Lepyrodiclis holosteoides (C.A. Mey.) Fenzl ex Fisch. & C.A. Mey.
   lepyrodiclis
Minuartia elegans (Cham. & Schlecht.) Schischkin
   elegant stitchwort
Minuartia nuttallii (Pax) Briq.
   Nuttall's sandwort
Minuartia nuttallii ssp. nuttallii (Pax) Briq.
   Nuttall's sandwort
Minuartia obtusiloba (Rydb.) House
   twinflower sandwort
Minuartia pusilla (S. Wats.) Mattf.
   annual sandwort
Minuartia pusilla var. pusilla (S. Wats.) Mattf.
   annual sandwort
Minuartia rossii (R. Br. ex Richards.) Graebn.
   Ross' sandwort
Minuartia rubella (Wahlenb.) Hiern
   beautiful sandwort
Moehringia lateriflora (L.) Fenzl
   bluntleaf sandwort
Moehringia macrophylla (Hook.) Fenzl
   largeleaf sandwort
Petrorhagia prolifera (L.) P.W. Ball & Heywood
   childing pink
Petrorhagia saxifraga (L.) Link
   saxifrage pink
Pseudostellaria jamesiana (Torr.) W.A. Weber & R.L. Hartman
   tuber starwort
Sagina procumbens L.
   birdeye pearlwort
Sagina saginoides (L.) Karst.
   arctic pearlwort
Saponaria officinalis L.
   bouncingbet
Saponaria vaccaria L.
   = Vaccaria hispanica
Scleranthus annuus L.
   German knotgrass
Silene acaulis (L.) Jacq.
   moss campion
Silene acaulis var. exscapa (All.) DC.
   moss campion
Silene antirrhina L.
   sleepy silene
Silene conoidea L.
   weed silene
Silene dichotoma Ehrh.
   dichotoma silene
Silene douglasii Hook.
   Douglas's campion
Silene douglasii var. douglasii Hook.
   Douglas's campion
Silene drummondii Hook.
   Drummond's campion
Silene drummondii var. drummondii Hook.
   Drummond's campion
Silene drummondii var. striata (Rydb.) Bocquet
   Drummond's campion
Silene latifolia Poir.
   bladder campion
Silene latifolia ssp. alba (P. Mill.) Greuter & Burdet
   bladder campion
Silene menziesii Hook.
   Menzies' campion
Silene menziesii ssp. menziesii Hook.
   Menzies' campion
Silene menziesii ssp. menziesii var. menziesii Hook.
   Menzies' campion
Silene menziesii ssp. menziesii var. viscosa (Greene) C.L. Hitchc. & Maguire
   Menzies' campion
Silene noctiflora L.
   nightflowering silene
Silene oregana S. Wats.
   Oregon silene
Silene parryi (S. Wats.) C.L. Hitchc. & Maguire
   Parry's silene
Silene repens Patrin ex Pers.
   pink campion
Silene repens ssp. australis C.L. Hitchc. & Maguire
   pink campion
Silene scaposa B.L. Robins.
   stem silene
Silene scaposa var. lobata C.L. Hitchc. & Maguire
   lostriver silene
Silene scouleri Hook.
   Scouler's campion
Silene scouleri ssp. scouleri Hook.
   Scouler's campion
Silene scouleri ssp. scouleri var. scouleri Hook.
   Scouler's campion
Silene spaldingii S. Wats.
   Spalding's silene
Silene uralensis (Rupr.) Bocquet
   apetalous catchfly
Silene uralensis ssp. montana (S. Wats.) McNeill
   apetalous catchfly
Silene vulgaris (Moench) Garcke
   maidenstears
Spergula arvense L.
   corn spurry
Spergularia diandra (Guss.) Held. & Sart.
   diandra sandspurry
Spergularia rubra (L.) J.& K. Presl
   red sandspurry
Spergularia salina J.& K. Presl
   salt sandspurry
Spergularia salina var. salina J.& K. Presl
   salt sandspurry
Stellaria borealis Bigelow
   boreal starwort
Stellaria borealis ssp. sitchana (Steud.) Piper
   Sitka starwort
Stellaria calycantha (Ledeb.) Bong.
   northern starwort
Stellaria crassifolia Ehrh.
   fleshy starwort
Stellaria crassifolia var. crassifolia Ehrh.
   fleshy starwort
Stellaria crispa Cham. & Schlecht.
   curled starwort
Stellaria graminea L.
   grasslike starwort
Stellaria longifolia Muhl. ex Willd.
   longleaf starwort
Stellaria longipes Goldie
   longstalk starwort
Stellaria longipes ssp. longipes Goldie
   longstalk starwort
Stellaria media (L.) Vill.
   common chickweed
Stellaria nitens Nutt.
   shiny chickweed
Stellaria obtusa Engelm.
   Rocky Mountain chickweed
Stellaria umbellata Turcz. ex Kar. & Kir.
   umbrella starwort
Vaccaria hispanica (P. Mill.) Rauschert
   cow soapwort

CELASTRACEAE
Paxistima myrsinites (Pursh) Raf.
   boxleaf myrtle

CERATOPHYLLACEAE
Ceratophyllum demersum L.
   coon's tail

CHENOPODIACEAE
Allenrolfea occidentalis (S. Wats.) Kuntze
   iodinebush
Atriplex argentea Nutt.
   silverscale saltbush
Atriplex canescens (Pursh) Nutt.
   fourwing saltbush
Atriplex confertifolia (Torr. & Frem.) S. Wats.
   shadscale saltbush
Atriplex falcata (M.E. Jones) Standl.
   sickle saltbush
Atriplex gardneri (Moq.) D. Dietr.
   Gardner's saltbush
Atriplex hortensis L.
   garden orache
Atriplex nuttallii S. Wats.
   Nuttall's saltbush
Atriplex patula L.
   spear saltbush
Atriplex prostrata Boucher ex DC.
   triangle orache
Atriplex pusilla (Torr. ex S. Wats.) S. Wats.
   smooth saltbush
Atriplex rosea L.
   tumbling saltweed
Atriplex spinosa (Hook.) Collotzi
   = Grayia spinosa
Atriplex tridentata Kuntze
   basin saltbush
Atriplex truncata (Torr. ex S. Wats.) Gray
   wedgescale saltbush
Bassia hirsuta (L.) Aschers.
   hairy smotherweed
Bassia hyssopifolia (Pallas) Kuntz
   fivehorn smotherweed
Chenopodium album L.
   lambsquarters
Chenopodium atrovirens Rydb.
   pinyon goosefoot
Chenopodium berlandieri Moq.
   pitseed goosefoot
Chenopodium botrys L.
   Jerusalem oak goosefoot
Chenopodium capitatum (L.) Ambrosi
   blite goosefoot
Chenopodium chenopodioides (L.) Aellen
Chenopodium foliosum (Moench) Aschers.
   leafy goosefoot
Chenopodium fremontii S. Wats.
   Fremont's goosefoot
Chenopodium fremontii var. fremontii S. Wats.
   Fremont's goosefoot
Chenopodium incanum (S. Wats.) Heller
   mealy goosefoot
Chenopodium incanum var. occidentale Crawford
   mealy goosefoot
Chenopodium leptophyllum (Moq.) Nutt. ex S. Wats.
   narrowleaf goosefoot
Chenopodium murale L.
   nettleleaf goosefoot
Chenopodium overi Aellen
   Over's goosefoot
Chenopodium pratericola Rydb.
   desert goosefoot
Chenopodium rubrum L.
   red goosefoot
Chenopodium salinum Standl.
   Rocky Mountain goosefoot
Chenopodium simplex (Torr.) Raf.
   mapleleaf goosefoot
Chenopodium subglabrum (S. Wats.) A. Nels.
   smooth goosefoot
Corispermum hyssopifolium L.
   common bugseed
Corispermum orientale Lam.
   oriental bugseed
Eurotia lanata (Pursh) Moq.
   = Krascheninnikovia lanata
Grayia spinosa (Hook.) Moq.
   spiny hopsage
Halogeton glomeratus (Bieb.) C.A. Mey.
   halogeton
Kochia americana S. Wats.
   greenmolly
Kochia scoparia (L.) Schrad.
   common kochia
Krascheninnikovia lanata (Pursh) Guldenstaedt
   winterfat
Monolepis nuttalliana (J.A. Schultes) Greene
   Nuttall's povertyweed
Monolepis pusilla Torr. ex S. Wats.
   small monolepis
Monolepis spathulata Gray
   beaver monolepis
Salicornia rubra A. Nels.
   red swampfire
Salsola kali L.
   prickly Russian thistle
Sarcobatus vermiculatus (Hook.) Torr.
   greasewood
Suaeda calceoliformis (Hook.) Moq.
   Pursh seepweed
Suaeda moquinii (Torr.) Greene
   Mojave seablite

CLUSIACEAE
Hypericum anagalloides Cham. & Schlecht.
   trailing St. Johnswort
Hypericum formosum ssp. scouleri (Hook.) C.L. Hitchc.
   = Hypericum scouleri ssp. scouleri
Hypericum majus (Gray) Britt.
   large St. Johnswort
Hypericum perforatum L.
   common St. Johnswort
Hypericum scouleri Hook.
   Scouler's St. Johnswort
Hypericum scouleri ssp. nortoniae (M.E. Jones) J. Gillett
   Norton's St. Johnswort
Hypericum scouleri ssp. scouleri Hook.
   Scouler's St. Johnswort

COMPOSITAE
Achillea lanulosa Nutt.
   = Achillea millefolium var. occidentalis
Achillea millefolium L.
   common yarrow
Achillea millefolium var. alpicola (Rydb.) Garrett
   common yarrow
Achillea millefolium var. californica (Pollard) Jepson
   California yarrow
Achillea millefolium var. millefolium L.
   common yarrow
Achillea millefolium var. occidentalis DC.
   western yarrow
Acroptilon repens (L.) DC.
   hardheads
Adenocaulon bicolor Hook.
   American trailplant
Ageratina occidentalis (Hook.) King & H.E. Robins.
   western snakeroot
Agoseris aurantiaca (Hook.) Greene
   orange agoseris
Agoseris aurantiaca var. aurantiaca (Hook.) Greene
   orange agoseris
Agoseris aurantiaca var. purpurea (Gray) Cronq.
   orange agoseris
Agoseris glauca (Pursh) Raf.
   pale agoseris
Agoseris glauca var. agrestis (Osterhout) Q. Jones ex Cronq.
   pale agoseris
Agoseris glauca var. dasycephala (Torr. & Gray) Jepson
   pale agoseris
Agoseris glauca var. glauca (Pursh) Raf.
   pale agoseris
Agoseris glauca var. laciniata (D.C. Eat.) Smiley
   false agoseris
Agoseris grandiflora (Nutt.) Greene
   bigflower agoseris
Agoseris heterophylla (Nutt.) Greene
   annual agoseris
Agoseris lackschewitzii D. Henderson & R. Moseley
   Mill Creek agoseris
Agoseris retrorsa (Benth.) Greene
   spearleaf agoseris
Ambrosia acanthicarpa Hook.
   flatspine burr ragweed
Ambrosia artemisiifolia L.
   annual ragweed
Ambrosia psilostachya DC.
   Cuman ragweed
Ambrosia tomentosa Nutt.
   skeletonleaf burr ragweed
Ambrosia trifida L.
   great ragweed
Ambrosia trifida var. trifida L.
   great ragweed
Anaphalis margaritacea (L.) Benth. & Hook. f.
   western pearlyeverlasting
Ancistrocarphus filagineus Gray
   false neststraw
Antennaria alpina (L.) Gaertn.
   alpine pussytoes
Antennaria arcuata Cronq.
   box pussytoes
Antennaria corymbosa E. Nels.
   flattop pussytoes
Antennaria dimorpha (Nutt.) Torr. & Gray
   low pussytoes
Antennaria flagellaris (Gray) Gray
   whip pussytoes
Antennaria howellii Greene
   Howell's pussytoes
Antennaria howellii ssp. howellii Greene
   Howell's pussytoes
Antennaria howellii ssp. neodioica (Greene) Bayer
   field pussytoes
Antennaria lanata (Hook.) Greene
   woolly pussytoes
Antennaria luzuloides Torr. & Gray
   rush pussytoes
Antennaria microphylla Rydb.
   littleleaf pussytoes
Antennaria neglecta Greene
   field pussytoes
Antennaria pulcherrima (Hook.) Greene
   showy pussytoes
Antennaria racemosa Hook.
   raceme pussytoes
Antennaria rosea Greene
   rosy pussytoes
Antennaria rosea ssp. arida (E. Nels.) Bayer
   rosy pussytoes
Antennaria rosea ssp. pulvinata (Greene) Bayer
   pulvinate pussytoes
Antennaria rosea ssp. rosea Greene
   rosy pussytoes
Antennaria stenophylla (Gray) Gray
   narrowleaf pussytoes
Antennaria umbrinella Rydb.
   umber pussytoes
Anthemis arvensis L.
   corn chamomile
Anthemis cotula L.
   stinking chamomile
Arctium lappa L.
   greater burrdock
Arctium minus Bernh.
   lesser burrdock
Arnica X diversifolia Greene (pro sp.)
   rayless arnica
Arnica amplexicaulis Nutt.
   clasping arnica
Arnica angustifolia Vahl
   narrowleaf arnica
Arnica angustifolia ssp. tomentosa (Macoun) G.W. & G.R. Dougl.
   narrowleaf arnica
Arnica chamissonis Less.
   chamisso arnica
Arnica chamissonis ssp. foliosa (Nutt.) Maguire
   chamisso arnica
Arnica chamissonis ssp. foliosa var. andina (Nutt.) Ediger & Barkl.
   chamisso arnica
Arnica chamissonis ssp. foliosa var. incana (Gray) Hulten
   chamisso arnica
Arnica cordifolia Hook.
   heartleaf arnica
Arnica fulgens Pursh
   foothill arnica
Arnica gracilis Rydb.
   smallhead arnica
Arnica latifolia Bong.
   broadleaf arnica
Arnica longifolia D.C. Eat.
   spearleaf arnica
Arnica mollis Hook.
   hairy arnica
Arnica parryi Gray
   Parry's arnica
Arnica parryi ssp. parryi Gray
   Parry's arnica
Arnica rydbergii Greene
   Rydberg's arnica
Arnica sororia Greene
   twin arnica
Artemisia absinthium L.
   absinth sagewort
Artemisia annua L.
   sweet sagewort
Artemisia arbuscula Nutt.
   low sagebrush
Artemisia arbuscula ssp. arbuscula Nutt.
   gray low sagebrush
Artemisia arbuscula ssp. longiloba (Osterhout) L. Shultz
   alkali sagebrush
Artemisia arbuscula ssp. thermopola Beetle
   hotsprings sagebrush
Artemisia biennis Willd.
   biennial wormwood
Artemisia campestris L.
   field sagewort
Artemisia campestris ssp. borealis (Pallas) Hall & Clements
   northern sagewort
Artemisia campestris ssp. borealis var. borealis (Pallas) M.E. Peck
   Pacific wormwood
Artemisia campestris ssp. borealis var. purshii (Hook.) Cronq.
   Pursh's wormwood
Artemisia campestris ssp. pacifica (Nutt.) Hall & Clements
   Pacific wormwood
Artemisia cana Pursh
   silver sagebrush
Artemisia cana ssp. viscidula (Osterhout) Beetle
   Coaltown sagebrush
Artemisia douglasiana Bess.
   Douglas' sagewort
Artemisia dracunculus L.
   wormwood
Artemisia frigida Willd.
   fringed sagewort
Artemisia lindleyana Bess.
   northwest sagebrush
Artemisia ludoviciana Nutt.
   Louisiana sagewort
Artemisia ludoviciana ssp. candicans (Rydb.) Keck
   gray sagewort
Artemisia ludoviciana ssp. incompta (Nutt.) Keck
   mountain sagewort
Artemisia ludoviciana ssp. ludoviciana Nutt.
   foothill sagewort
Artemisia michauxiana Bess.
   Michaux's sagebrush
Artemisia nova A. Nels.
   black sagebrush
Artemisia packardiae J. Grimes & Ertter
   Packard's wormwood
Artemisia papposa Blake & Cronq.
   fuzzy sagebrush
Artemisia pedatifida Nutt.
   birdfoot sagebrush
Artemisia rigida (Nutt.) Gray
   stiff sagebrush
Artemisia rothrockii Gray
   timberline sagebrush
Artemisia spinescens D.C. Eat.
   bud sagebrush
Artemisia tilesii Ledeb.
   Tilesius' wormwood
Artemisia tilesii ssp. unalaschcensis (Bess.) Hulten
   Alaska sagebrush
Artemisia tridentata Nutt.
   big sagebrush
Artemisia tridentata ssp. spiciformis (Osterhout) Kartesz & Gandhi
   big sagebrush
Artemisia tridentata ssp. tridentata Nutt.
   basin big sagebrush
Artemisia tridentata ssp. vaseyana (Rydb.) Beetle
   mountain big sagebrush
Artemisia tripartita Rydb.
   threetip sagebrush
Artemisia tripartita ssp. tripartita Rydb.
   Idaho threetip sagebrush
Artemisia vulgaris ssp. ludoviciana (Nutt.) Hall & Clements
   = Artemisia ludoviciana ssp. ludoviciana
Artemisia vulgaris var. douglasiana (Bess.) St. John
   = Artemisia douglasiana
Aster ascendens Lindl.
   Chile aster
Aster borealis (Torr. & Gray) Prov.
   rush aster
Aster bracteolatus Nutt. (pro sp.)
   bract aster
Aster campestris Nutt.
   meadow aster
Aster campestris var. campestris Nutt.
   western meadow aster
Aster conspicuus Lindl.
   showy aster
Aster cusickii Gray
   Cusick's aster
Aster eatonii (Gray) T.J. Howell
   Eaton's aster
Aster ericoides L.
   heath aster
Aster ericoides var. pansus (Blake) Boivin
   manyflowered aster
Aster falcatus Lindl.
   cluster aster
Aster falcatus var. crassulus (Rydb.) Cronq.
   rough white prairie aster
Aster falcatus var. falcatus Lindl.
   cluster aster
Aster foliaceus Lindl. ex DC.
   alpine leafybract aster
Aster foliaceus var. apricus Gray
   leafybract aster
Aster foliaceus var. canbyi Gray
   Canby's aster
Aster foliaceus var. parryi (D.C. Eat.) Gray
   Parry's aster
Aster glaucodes Blake
   gray aster
Aster hendersonii Fern.
   Lyall aster
Aster integrifolius Nutt.
   thickstem aster
Aster jessicae Piper
   Jessica's aster
Aster laevis L.
   smooth aster
Aster laevis var. geyeri Gray
   Geyer's smooth aster
Aster lanceolatus Willd.
   white panicle aster
Aster lanceolatus ssp. hesperius (Gray) Semple & Chmielewski
   Siskiyou aster
Aster meritus A. Nels.
Aster occidentalis (Nutt.) Torr. & Gray
   western aster
Aster occidentalis var. intermedius Gray
   intermediate aster
Aster occidentalis var. occidentalis (Nutt.) Torr. & Gray
   western aster
Aster perelegans A. Nels. & J.F. Macbr.
   elegant aster
Aster sibiricus L.
   Siberian aster
Aster subspicatus Nees
   Douglas aster
Aster subspicatus var. subspicatus Nees
   leafybract aster
Balsamita major Desf.
   costmary
Balsamorhiza hookeri (Hook.) Nutt.
   Hooker's balsamroot
Balsamorhiza hookeri var. hispidula (Sharp) Cronq.
   hairy balsamroot
Balsamorhiza hookeri var. idahoensis (Sharp) Cronq.
   Idaho balsamroot
Balsamorhiza hookeri var. neglecta (Sharp) Cronq.
   neglected balsamroot
Balsamorhiza incana Nutt.
   hoary balsamroot
Balsamorhiza macrophylla Nutt.
   cutleaf balsamroot
Balsamorhiza sagittata (Pursh) Nutt.
   arrowleaf balsamroot
Bidens cernua L.
   nodding beggartick
Bidens frondosa L.
   devil's beggartick
Bidens tenuisecta Gray
   slimlobe beggarticks
Bidens vulgata Greene
   big devils beggartick
Blepharipappus scaber Hook.
   rough eyelashweed
Blepharipappus scaber ssp. scaber Hook.
   rough eyelashweed
Boltonia asteroides (L.) L'Her.
   white doll's daisy
Boltonia asteroides var. recognita (Fern. & Grisc.) Cronq.
   white doll's daisy
Brachyactis ciliata (Ledeb.) Ledeb.
   alkali rayless aster
Brachyactis ciliata ssp. angusta (Lindl.) A.G. Jones
   alkali rayless aster
Brachyactis frondosa (Nutt.) Gray
   leafy rayless aster
Brickellia californica (Torr. & Gray) Gray
   California brickellbush
Brickellia grandiflora (Hook.) Nutt.
   tasselflower brickellbush
Brickellia microphylla (Nutt.) Gray
   littleleaf brickellbush
Brickellia microphylla var. microphylla (Nutt.) Gray
   littleleaf brickellbush
Brickellia microphylla var. scabra Gray
   rough brickellbush
Brickellia oblongifolia Nutt.
   Mojave brickellbush
Brickellia oblongifolia var. linifolia (D.C. Eat.) B.L. Robins.
   narrowleaf brickellbush
Brickellia oblongifolia var. oblongifolia Nutt.
   narrowleaf brickellbush
Canadanthus modestus (Lindl.) Nesom
Carduus acanthoides L.
   spiny plumeless thistle
Carduus nutans L.
   nodding plumeless thistle
Centaurea biebersteinii DC.
   spotted knapweed
Centaurea cyanus L.
   garden cornflower
Centaurea diffusa Lam.
   white knapweed
Centaurea jacea L.
   brownray knapweed
Centaurea nigra L.
   lesser knapweed
Centaurea solstitialis L.
   yellow star thistle
Centaurea trichocephala Bieb. ex Willd.
   centaurea
Chaenactis cusickii Gray
   Cusick's pincushion
Chaenactis douglasii (Hook.) Hook. & Arn.
   Douglas' dustymaiden
Chaenactis douglasii var. alpina Gray
   alpine dustymaiden
Chaenactis douglasii var. douglasii (Hook.) Hook. & Arn.
   Douglas' dustymaiden
Chaenactis evermannii Greene
   Evermann's pincushion
Chaenactis leucopsis Greene
   alpine pincushion
Chaenactis macrantha D.C. Eat.
   bighead dustymaiden
Chaenactis stevioides Hook. & Arn.
   Steve's dustymaiden
Chaetadelpha wheeleri Gray ex S. Wats.
   Wheeler's skeletonweed
Chamaechaenactis scaposa (Eastw.) Rydb.
   fullstem
Chamaechaenactis scaposa var. parva Preece & Turner
   fullstem
Chondrilla juncea L.
   hogbite
Chrysanthemum balsamita (L.) Baill., non L.
   = Balsamita major
Chrysanthemum leucanthemum L.
   = Leucanthemum vulgare
Chrysanthemum parthenium (L.) Bernh.
   = Tanacetum parthenium
Chrysothamnus graveolens (Nutt.) Greene
   = Ericameria nauseosa ssp. nauseosa var. glabrata
Chrysothamnus humilis Greene
   Truckee rabbitbrush
Chrysothamnus parryi (Gray) Greene
   = Ericameria parryi var. parryi
Chrysothamnus parryi ssp. parryi (Gray) Greene
   Parry's rabbitbrush
Chrysothamnus viscidiflorus (Hook.) Nutt.
   green rabbitbrush
Chrysothamnus viscidiflorus ssp. lanceolatus (Nutt.) Hall & Clements
   green rabbitbrush
Chrysothamnus viscidiflorus ssp. puberulus (D.C. Eat.) Hall & Clements
   green rabbitbrush
Chrysothamnus viscidiflorus ssp. viscidiflorus (Hook.) Nutt.
   green rabbitbrush
Chrysothamnus viscidiflorus ssp. viscidiflorus var. stenophyllus (Gray) Hall
   green rabbitbrush
Chrysothamnus viscidiflorus ssp. viscidiflorus var. viscidiflorus (Hook.) Nutt.
   green rabbitbrush
Cichorium intybus L.
   chicory
Cirsium andersonii (Gray) Petrak
   rose thistle
Cirsium arvense (L.) Scop.
   Canadian thistle
Cirsium brevifolium Nutt.
   Palouse thistle
Cirsium brevistylum Cronq.
   clustered thistle
Cirsium canescens Nutt.
   prairie thistle
Cirsium canovirens (Rydb.) Petrak
   graygreen thistle
Cirsium edule Nutt.
   edible thistle
Cirsium flodmanii (Rydb.) Arthur
   Flodman's thistle
Cirsium foliosum (Hook.) DC.
   elk thistle
Cirsium hookerianum Nutt.
   white thistle
Cirsium neomexicanum Gray
   New Mexico thistle
Cirsium neomexicanum var. utahense (Petrak) Welsh
   Utah thistle
Cirsium scariosum Nutt.
   meadow thistle
Cirsium scariosum var. scariosum Nutt.
   meadow thistle
Cirsium subniveum Rydb.
   Jackson Hole thistle
Cirsium undulatum (Nutt.) Spreng.
   wavyleaf thistle
Cirsium undulatum var. undulatum (Nutt.) Spreng.
   wavyleaf thistle
Cirsium vulgare (Savi) Ten.
   bull thistle
Conyza canadensis (L.) Cronq.
   Canadian horseweed
Conyza canadensis var. glabrata (Gray) Cronq.
   Canadian horseweed
Coreopsis tinctoria Nutt.
   golden tickseed
Coreopsis tinctoria var. atkinsoniana (Dougl. ex Lindl.) H.M. Parker
   Atkinson's tickseed
Coreopsis tinctoria var. tinctoria Nutt.
   golden tickseed
Crepis acuminata Nutt.
   longleaf hawksbeard
Crepis acuminata ssp. acuminata Nutt.
   longleaf hawksbeard
Crepis atribarba Heller
   slender hawksbeard
Crepis atribarba ssp. atribarba Heller
   slender hawksbeard
Crepis atribarba ssp. originalis (Babcock & Stebbins) Babcock & Stebbins
   slender hawksbeard
Crepis bakeri Greene
   Baker's hawksbeard
Crepis bakeri ssp. idahoensis Babcock & Stebbins
   Idaho hawksbeard
Crepis capillaris Wallr.
   smooth hawksbeard
Crepis modocensis Greene
   Siskiyou hawksbeard
Crepis modocensis ssp. modocensis Greene
   Modoc hawksbeard
Crepis nana Richards.
   dwarf alpine hawksbeard
Crepis nana ssp. nana Richards.
   dwarf alpine hawksbeard
Crepis nana ssp. ramosa Babcock
   dwarf alpine hawksbeard
Crepis occidentalis Nutt.
   largeflower hawksbeard
Crepis occidentalis ssp. costata (Gray) Babcock & Stebbins
   largeflower hawksbeard
Crepis occidentalis ssp. occidentalis Nutt.
   largeflower hawksbeard
Crepis occidentalis ssp. pumila (Rydb.) Babcock & Stebbins
   largeflower hawksbeard
Crepis runcinata (James) Torr. & Gray
   fiddleleaf hawksbeard
Crepis runcinata ssp. glauca (Nutt.) Babcock & Stebbins
   fiddleleaf hawksbeard
Crepis runcinata ssp. hispidulosa (T.J. Howell ex Rydb.) Babcock & Stebbins
   fiddleleaf hawksbeard
Crepis runcinata ssp. runcinata (James) Torr. & Gray
   fiddleleaf hawksbeard
Crupina vulgaris Cass.
   common crupina
Dimeresia howellii Gray
   doublet
Dugaldia hoopesii (Gray) Rydb.
   = Hymenoxys hoopesii
Eatonella nivea (D.C. Eat.) Gray
   white false tickhead
Enceliopsis nudicaulis (Gray) A. Nels.
   nakedstem sunray
Enceliopsis nudicaulis var. nudicaulis (Gray) A. Nels.
   nakedstem sunray
Ericameria bloomeri (Gray) J.F. Macbr.
   rabbitbush heathgoldenrod
Ericameria discoidea (Nutt.) Nesom
   whitestem heathgoldenrod
Ericameria discoidea var. discoidea (Nutt.) Nesom
   whitestem heathgoldenrod
Ericameria greenei (Gray) Nesom
   Greene's heathgoldenrod
Ericameria nana Nutt.
   dwarf heathgoldenrod
Ericameria nauseosa (Pallas ex Pursh) Nesom & Baird
Ericameria nauseosa ssp. consimilis (Greene) Nesom & Baird
Ericameria nauseosa ssp. consimilis var. leiosperma 
Ericameria nauseosa ssp. consimilis var. oreophila 
Ericameria nauseosa ssp. nauseosa (Pallas ex Pursh) Nesom & Baird
Ericameria nauseosa ssp. nauseosa var. bigelovii 
Ericameria nauseosa ssp. nauseosa var. glabrata 
Ericameria nauseosa ssp. nauseosa var. hololeuca 
Ericameria nauseosa ssp. nauseosa var. nana 
Ericameria nauseosa ssp. nauseosa var. nauseosa 
Ericameria nauseosa ssp. nauseosa var. speciosa 
Ericameria parryi (Gray) Nesom
Ericameria parryi var. attenuata (M.E. Jones) Nesom & Baird
Ericameria parryi var. howardii (Parry ex Gray) Nesom & Baird
Ericameria parryi var. montana (L.C. Anders.) Nesom & Baird
Ericameria parryi var. parryi (Gray) Nesom
Ericameria resinosa Nutt.
   Columbian heathgoldenrod
Ericameria suffruticosa (Nutt.) Nesom
   singlehead heathgoldenrod
Ericameria viscidiflora (Hook.) L.C. Anders.
   = Chrysothamnus viscidiflorus ssp. viscidiflorus var. viscidiflorus
Erigeron acris L.
Erigeron acris ssp. acris L.
Erigeron acris ssp. acris var. debilis 
Erigeron acris ssp. politus (Fries) Schinz & R. Keller
Erigeron annuus (L.) Pers.
   eastern daisy fleabane
Erigeron aphanactis (Gray) Greene
   rayless shaggy fleabane
Erigeron aphanactis var. aphanactis (Gray) Greene
   rayless shaggy fleabane
Erigeron asperugineus (D.C. Eat.) Gray
   Idaho fleabane
Erigeron austiniae Greene
   dwarf yellow fleabane
Erigeron bloomeri Gray
   scabland fleabane
Erigeron bloomeri var. bloomeri Gray
   scabland fleabane
Erigeron caespitosus Nutt.
   tufted fleabane
Erigeron canadensis var. glabratus Gray
   = Conyza canadensis var. glabrata
Erigeron chrysopsidis Gray
   dwarf yellow fleabane
Erigeron compositus Pursh
   cutleaf daisy
Erigeron compositus var. compositus Pursh
   dwarf mountain fleabane
Erigeron concinnus (Hook. & Arn.) Torr. & Gray
   Navajo fleabane
Erigeron concinnus var. concinnus (Hook. & Arn.) Torr. & Gray
   Navajo fleabane
Erigeron corymbosus Nutt.
   longleaf fleabane
Erigeron coulteri Porter
   large mountain fleabane
Erigeron cronquistii Maguire
   Cronquist's fleabane
Erigeron disparipilus Cronq.
   white cushion fleabane
Erigeron divergens Torr. & Gray
   spreading fleabane
Erigeron eatonii Gray
   Eaton's fleabane
Erigeron eatonii var. eatonii Gray
   Eaton's fleabane
Erigeron eatonii var. lavandulus Strother & Ferlatte
   Eaton's fleabane
Erigeron eatonii var. villosus (Cronq.) Cronq.
   Eaton's fleabane
Erigeron engelmannii A. Nels.
   Engelmann's fleabane
Erigeron engelmannii var. davisii (Cronq.) Cronq.
   Davis' fleabane
Erigeron engelmannii var. engelmannii A. Nels.
   Engelmann's fleabane
Erigeron evermannii Rydb.
   Evermann's fleabane
Erigeron filifolius (Hook.) Nutt.
   threadleaf fleabane
Erigeron filifolius var. filifolius (Hook.) Nutt.
   threadleaf fleabane
Erigeron glabellus Nutt.
   streamside fleabane
Erigeron glabellus var. glabellus Nutt.
   streamside fleabane
Erigeron glabellus var. pubescens Hook.
   streamside fleabane
Erigeron gracilis Rydb.
   quill fleabane
Erigeron humilis Graham
   arctic alpine fleabane
Erigeron latus (A. Nels. & J.F. Macbr.) Cronq.
   broad fleabane
Erigeron leiomerus Gray
   rockslide yellow fleabane
Erigeron linearis (Hook.) Piper
   desert yellow fleabane
Erigeron lonchophyllus Hook.
Erigeron nanus Nutt.
   dwarf fleabane
Erigeron peregrinus (Banks ex Pursh) Greene
   subalpine fleabane
Erigeron peregrinus ssp. callianthemus (Greene) Cronq.
   subalpine fleabane
Erigeron peregrinus ssp. callianthemus var. callianthemus (Greene) Cronq.
   subalpine fleabane
Erigeron peregrinus ssp. callianthemus var. scaposus (Torr. & Gray) Cronq.
   subalpine fleabane
Erigeron philadelphicus L.
   Philadelphia fleabane
Erigeron poliospermus Gray
   purple cushion fleabane
Erigeron poliospermus var. poliospermus Gray
   purple cushion fleabane
Erigeron pumilus Nutt.
   shaggy fleabane
Erigeron pumilus ssp. intermedius Cronq.
   shaggy fleabane
Erigeron pumilus ssp. intermedius var. gracilior Cronq.
   shaggy fleabane
Erigeron pumilus ssp. intermedius var. intermedius (Cronq.) Cronq.
   shaggy fleabane
Erigeron radicatus Hook.
   taproot fleabane
Erigeron rydbergii Cronq.
   Rydberg's fleabane
Erigeron salmonensis S.J. Brunsfeld & Nesom
   Salmon River fleabane
Erigeron simplex Greene
   onestem fleabane
Erigeron speciosus (Lindl.) DC.
   aspen fleabane
Erigeron speciosus var. macranthus (Nutt.) Cronq.
   aspen fleabane
Erigeron speciosus var. speciosus (Lindl.) DC.
   aspen fleabane
Erigeron strigosus Muhl. ex Willd.
   prairie fleabane
Erigeron strigosus var. septentrionalis (Fern. & Wieg.) Fern.
   prairie fleabane
Erigeron strigosus var. strigosus Muhl. ex Willd.
   prairie fleabane
Erigeron subtrinervis Rydb. ex Porter & Britt.
   threenerve fleabane
Erigeron subtrinervis var. conspicuus (Rydb.) Cronq.
   threenerve fleabane
Erigeron tener (Gray) Gray
   slender fleabane
Erigeron tweedyi Canby
   Tweedy's fleabane
Erigeron uncialis Blake
   lone fleabane
Erigeron uncialis ssp. uncialis Blake
   lone fleabane
Erigeron ursinus D.C. Eat.
   Bear River fleabane
Eriophyllum lanatum (Pursh) Forbes
   woolly eriophyllum
Eriophyllum lanatum var. integrifolium (Hook.) Smiley
   common woollysunflower
Eriophyllum lanatum var. lanatum (Pursh) Forbes
   common woollysunflower
Eucephalus engelmannii (D.C. Eat.) Greene
Eupatorium maculatum L.
   spotted joepyeweed
Eupatorium maculatum var. bruneri (Gray) Breitung
   spotted joepyeweed
Eupatorium occidentale Hook.
   = Ageratina occidentalis
Euthamia occidentalis Nutt.
   western goldentop
Filago arvensis L.
   field cottonrose
Filago californica Nutt.
   California cottonrose
Franseria 
   = Ambrosia 
Gaillardia aristata Pursh
   common gaillardia
Glyptopleura marginata D.C. Eat.
   carveseed
Gnaphalium palustre Nutt.
   western marsh cudweed
Gnaphalium uliginosum L.
   marsh cudweed
Grindelia columbiana (Piper) Rydb.
   Columbia River gumweed
Grindelia howellii Steyermark
   Howell's gumweed
Grindelia nana Nutt.
   Idaho gumweed
Grindelia nana var. integerrima (Rydb.) Steyermark
   Idaho gumweed
Grindelia nana var. nana Nutt.
   Idaho gumweed
Grindelia squarrosa (Pursh) Dunal
   curlycup gumweed
Grindelia squarrosa var. quasiperennis Lunell
   curlycup gumweed
Grindelia squarrosa var. serrulata (Rydb.) Steyermark
   curlycup gumweed
Grindelia squarrosa var. squarrosa (Pursh) Dunal
   curlycup gumweed
Gutierrezia sarothrae (Pursh) Britt. & Rusby
   broom snakeweed
Haplopappus aberrans (A. Nels.) Hall
   = Tonestus aberrans
Haplopappus acaulis (Nutt.) Gray
   = Stenotus acaulis var. acaulis
Haplopappus alpigenus Torr. & Gray
   = Oreostemma alpigenum var. alpigenum
Haplopappus bloomeri Gray
   = Ericameria bloomeri
Haplopappus carthamoides (Hook.) Gray
   = Pyrrocoma carthamoides var. carthamoides
Haplopappus contractus Hall
   = Pyrrocoma uniflora var. uniflora
Haplopappus coulteri Harvey & Gray ex Gray
   = Machaeranthera pinnatifida ssp. pinnatifida var. pinnatifida
Haplopappus greenei Gray
   = Ericameria greenei
Haplopappus hirtus Gray
   = Pyrrocoma hirta var. hirta
Haplopappus insecticruris (Henderson) Heller
   = Pyrrocoma insecticruris
Haplopappus integrifolius Porter ex Gray
   = Pyrrocoma integrifolia
Haplopappus lanuginosus Gray
   = Stenotus lanuginosus var. lanuginosus
Haplopappus liatriformis (Greene) St. John
   = Pyrrocoma liatriformis
Haplopappus lyallii Gray
   = Tonestus lyallii
Haplopappus macronema (Nutt.) Gray
   = Ericameria discoidea var. discoidea
Haplopappus nanus (Nutt.) D.C. Eat.
   = Ericameria nana
Haplopappus nuttallii Torr. & Gray
   = Machaeranthera grindelioides var. grindelioides
Haplopappus paniculatus var. virgatus Gray
   = Pyrrocoma racemosa var. paniculata
Haplopappus racemosus (Nutt.) Torr.
   = Pyrrocoma racemosa var. racemosa
Haplopappus radiatus (Nutt.) Cronq.
   = Pyrrocoma radiata
Haplopappus resinosus (Nutt.) Gray
   = Ericameria resinosa
Haplopappus spinulosus (Pursh) DC.
   = Machaeranthera pinnatifida ssp. pinnatifida var. pinnatifida
Haplopappus stenophyllus Gray
   = Stenotus stenophyllus
Haplopappus suffruticosus (Nutt.) Gray
   = Ericameria suffruticosa
Haplopappus texensis R.C. Jackson
   = Machaeranthera pinnatifida ssp. pinnatifida var. pinnatifida
Haplopappus uniflorus (Hook.) Torr. & Gray
   = Pyrrocoma uniflora var. uniflora
Helenium autumnale L.
   common sneezeweed
Helenium autumnale var. montanum (Nutt.) Fern.
   mountain sneezeweed
Helenium hoopesii Gray
   = Hymenoxys hoopesii
Helianthella quinquenervis (Hook.) Gray
   fivenerve helianthella
Helianthella uniflora (Nutt.) Torr. & Gray
   oneflower helianthella
Helianthella uniflora var. douglasii (Torr. & Gray) W.A. Weber
   Douglas' helianthella
Helianthella uniflora var. uniflora (Nutt.) Torr. & Gray
   oneflower helianthella
Helianthus annuus L.
   common sunflower
Helianthus cusickii Gray
   Cusick's sunflower
Helianthus maximiliani Schrad.
   Maximilian sunflower
Helianthus nuttallii Torr. & Gray
   Nuttall's sunflower
Helianthus nuttallii ssp. nuttallii Torr. & Gray
   Nuttall's sunflower
Helianthus petiolaris Nutt.
   prairie sunflower
Helianthus petiolaris ssp. petiolaris Nutt.
   prairie sunflower
Helianthus tuberosus L.
   Jerusalem artichoke
Heliomeris multiflora Nutt.
   showy goldeneye
Heliomeris multiflora var. multiflora Nutt.
   showy goldeneye
Heterotheca villosa (Pursh) Shinners
   hairy goldenaster
Heterotheca villosa var. hispida (Hook.) Harms
   bristly hairy goldaster
Heterotheca villosa var. villosa (Pursh) Shinners
   hairy goldenaster
Hieracium albiflorum Hook.
   white hawkweed
Hieracium canadense Michx.
   Canadian hawkweed
Hieracium canadense var. canadense Michx.
   Canadian hawkweed
Hieracium cynoglossoides Arv.-Touv.
   houndstongue hawkweed
Hieracium gracile Hook.
   slender hawkweed
Hieracium gracile var. detonsum (Gray) Gray
   low alpine hawkweed
Hieracium gracile var. gracile Hook.
   slender hawkweed
Hieracium umbellatum L.
   narrowleaf hawkweed
Hulsea algida Gray
   pain hulsea
Hymenopappus filifolius Hook.
   fineleaf hymenopappus
Hymenopappus filifolius var. idahoensis B.L. Turner
   fineleaf hymenopappus
Hymenopappus filifolius var. lugens (Greene) Jepson
   Idaho hymenopappus
Hymenoxys cooperi (Gray) Cockerell
   Cooper's hymenoxys
Hymenoxys cooperi var. canescens (D.C. Eat.) Parker
   Cooper's hymenoxys
Hymenoxys hoopesii (Gray) Bierner
Hymenoxys richardsonii (Hook.) Cockerell
   pingue hymenoxys
Hymenoxys richardsonii var. richardsonii (Hook.) Cockerell
   pingue hymenoxys
Hypochaeris radicata L.
   hairy catsear
Ionactis alpina (Nutt.) Greene
   alpine ionactis
Ionactis stenomeres (Gray) Greene
   ionactis
Iva axillaris Pursh
   povertyweed
Iva xanthifolia Nutt.
   giant sumpweed
Lactuca biennis (Moench) Fern.
   tall blue lettuce
Lactuca canadensis L.
   Canada lettuce
Lactuca canadensis var. canadensis L.
   Canada lettuce
Lactuca canadensis var. latifolia Kuntze
   Canada lettuce
Lactuca ludoviciana (Nutt.) Riddell
   biannual lettuce
Lactuca pulchella (Pursh) DC.
   = Lactuca tatarica var. pulchella
Lactuca sativa L.
   garden lettuce
Lactuca scariola L.
   = Lactuca serriola
Lactuca serriola L.
   prickly lettuce
Lactuca tatarica (L.) C.A. Mey.
   blue lettuce
Lactuca tatarica var. pulchella (Pursh) Breitung
   blue lettuce
Lagophylla ramosissima Nutt.
   branched lagophylla
Lapsana communis L.
   common nipplewort
Layia glandulosa (Hook.) Hook. & Arn.
   whitedaisy tidytips
Layia glandulosa ssp. glandulosa (Hook.) Hook. & Arn.
   whitedaisy tidytips
Leucanthemum leucanthemum (L.) Rydb.
   = Leucanthemum vulgare
Leucanthemum vulgare Lam.
   oxeyedaisy
Lygodesmia grandiflora (Nutt.) Torr. & Gray
   largeflower skeletonplant
Lygodesmia juncea (Pursh) D. Don ex Hook.
   rush skeletonplant
Machaeranthera bigelovii (Gray) Greene
   Bigelow's tansyaster
Machaeranthera bigelovii var. commixta (Greene) B.L. Turner
   Bigelow's tansyaster
Machaeranthera canescens (Pursh) Gray
   hoary aster
Machaeranthera canescens ssp. canescens (Pursh) Gray
   hoary aster
Machaeranthera canescens ssp. canescens var. canescens (Pursh) Gray
   cutleaf goldenweed
Machaeranthera canescens ssp. canescens var. incana (Lindl.) Gray
   cutleaf goldenweed
Machaeranthera canescens ssp. canescens var. sessiliflora (Nutt.) B.L. Turner
   cutleaf goldenweed
Machaeranthera grindelioides (Nutt.) Shinners
   rayless aster
Machaeranthera grindelioides var. grindelioides (Nutt.) Shinners
   rayless aster
Machaeranthera pinnatifida (Hook.) Shinners
   lacy tansyaster
Machaeranthera pinnatifida ssp. pinnatifida (Hook.) Shinners
   lacy tansyaster
Machaeranthera pinnatifida ssp. pinnatifida var. pinnatifida (Hook.) Shinners
   lacy tansyaster
Madia exigua (Sm.) Gray
   small tarweed
Madia glomerata Hook.
   mountain tarweed
Madia gracilis (Sm.) Keck & J. Clausen ex Applegate
   grassy tarweed
Madia gracilis ssp. gracilis (Sm.) Keck & J. Clausen ex Applegate
   grassy tarweed
Madia minima (Gray) Keck
   oppositeleaved tarweed
Malacothrix glabrata (Gray ex D.C. Eat.) Gray
   smooth desertdandelion
Malacothrix sonchoides (Nutt.) Torr. & Gray
   sowthistle desertdandelion
Malacothrix torreyi Gray
   Torrey's desertdandelion
Matricaria discoidea DC.
   disc mayweed
Matricaria matricarioides (Less.) Porter
   = Matricaria discoidea
Matricaria perforata Merat
   scentless mayweed
Matricaria suaveolens (Pursh) Buch., non L.
   = Matricaria discoidea
Megalodonta beckii (Torr. ex Spreng.) Greene
   aquatic beggartick
Microseris nutans (Hook.) Schultz-Bip.
   nodding microceris
Microseris nutans ssp. nutans (Hook.) Schultz-Bip.
   nodding silverpuffs
Nothocalais nigrescens (Henderson) Heller
   meadow microseris
Nothocalais troximoides (Gray) Greene
   weevil microseris
Onopordum acanthium L.
   Scotch cottonthistle
Oreostemma alpigenum (Torr. & Gray) Nesom
Oreostemma alpigenum var. alpigenum (Torr. & Gray) Nesom
Oreostemma alpigenum var. haydenii (Porter) Nesom
Petasites sagittatus (Banks ex Pursh) Gray
   arrowleaf sweet coltsfoot
Petradoria pumila (Nutt.) Greene
   grassy rockgoldenrod
Prenanthes alata (Hook.) D. Dietr.
   western rattlesnakeroot
Prenanthes sagittata (Gray) A. Nels.
   arrowleaf rattlesnakeroot
Psathyrotes annua (Nutt.) Gray
   annual psathyrotes
Pseudognaphalium canescens (DC.) W.A. Weber
Pseudognaphalium canescens ssp. microcephalum (Nutt.) Kartesz, comb. nov. ined.
Pseudognaphalium stramineum (Kunth) W.A. Weber
Pseudognaphalium viscosum (Kunth) W.A. Weber
Psilocarphus brevissimus Nutt.
   short woollyheads
Psilocarphus brevissimus var. brevissimus Nutt.
   short woollyheads
Psilocarphus elatior (Gray) Gray
   meadow woollyheads
Psilocarphus oregonus Nutt.
   Oregon woollyheads
Psilocarphus tenellus Nutt.
   slender woollyheads
Psilocarphus tenellus var. tenellus Nutt.
   slender woollyheads
Psilostrophe bakeri Greene
   Baker's paperflower
Pyrrocoma carthamoides Hook.
   largeflower goldenweed
Pyrrocoma carthamoides var. carthamoides Hook.
   loved goldenweed
Pyrrocoma carthamoides var. cusickii (Gray) Kartesz & Gandhi
   narrowhead goldenweed
Pyrrocoma hirta (Gray) Greene
   tacky goldenweed
Pyrrocoma hirta var. hirta (Gray) Greene
   hairy goldenweed
Pyrrocoma hirta var. sonchifolia (Greene) Kartesz & Gandhi
   tacky goldenweed
Pyrrocoma insecticruris Henderson
   wholeleaf goldenweed
Pyrrocoma integrifolia (Porter ex Gray) Greene
   manysted goldenweed
Pyrrocoma lanceolata (Hook.) Greene
   lanceleaf goldenweed
Pyrrocoma liatriformis Greene
   smallhead goldenweed
Pyrrocoma linearis (Keck) Kartesz & Gandhi
   thinleaf goldenhead
Pyrrocoma racemosa (Nutt.) Torr. & Gray
   clustered goldenweed
Pyrrocoma racemosa var. paniculata (Nutt.) Kartesz & Gandhi
   clustered goldenweed
Pyrrocoma racemosa var. racemosa (Nutt.) Torr. & Gray
   clustered goldenweed
Pyrrocoma radiata Nutt.
   ray goldenweed
Pyrrocoma uniflora (Hook.) Greene
   plantain goldenweed
Pyrrocoma uniflora var. uniflora (Hook.) Greene
   plantain goldenweed
Ratibida columnifera (Nutt.) Woot. & Standl.
   upright prairie coneflower
Rigiopappus leptocladus Gray
   wireweed
Rudbeckia hirta L.
   blackeyed Susan
Rudbeckia laciniata L.
   cutleaf coneflower
Rudbeckia laciniata var. ampla (A. Nels.) Cronq.
   cutleaf coneflower
Rudbeckia laciniata var. laciniata L.
   cutleaf coneflower
Rudbeckia occidentalis Nutt.
   western coneflower
Rudbeckia occidentalis var. occidentalis Nutt.
   western coneflower
Saussurea americana D.C. Eat.
   American saussurea
Senecio canus Hook.
   woolly groundsel
Senecio crassulus Gray
   thickleaf groundsel
Senecio cymbalarioides Buek
   cleftleaf groundsel
Senecio debilis Nutt.
   weak groundsel
Senecio dimorphophyllus Greene
   splitleaf groundsel
Senecio dimorphophyllus var. paysonii T.M. Barkl.
   Payson's groundsel
Senecio fremontii Torr. & Gray
   Fremont's groundsel
Senecio fremontii var. fremontii Torr. & Gray
   Fremont's groundsel
Senecio hydrophiloides Rydb.
   tall groundwel
Senecio hydrophilus Nutt.
   water groundsel
Senecio indecorus Greene
   elegant groundsel
Senecio integerrimus Nutt.
   lambstongue groundsel
Senecio integerrimus var. exaltatus (Nutt.) Cronq.
   Columbia groundsel
Senecio integerrimus var. ochroleucus (Gray) Cronq.
   paleyellow groundsel
Senecio megacephalus Nutt.
   rocky groundsel
Senecio multilobatus Torr. & Gray ex Gray
   lobeleaf groundsel
Senecio pauciflorus Pursh
   alpine groundsel
Senecio pauperculus Michx.
   balsam groundsel
Senecio pseudaureus Rydb.
   falsegold groundsel
Senecio pseudaureus var. pseudaureus Rydb.
   falsegold groundsel
Senecio rapifolius Nutt.
   openwoods groundsel
Senecio serra Hook.
   butterweed groundsel
Senecio sphaerocephalus Greene
   ballhead groundsel
Senecio streptanthifolius Greene
   cleftleaf groundsel
Senecio streptanthifolius var. laetiflorus (Greene) J.F. Bain
   Rocky Mountain groundsel
Senecio streptanthifolius var. oodes (Rydb.) J.F. Bain
   Rocky Mountain groundsel
Senecio streptanthifolius var. streptanthifolius Greene
   cleftleaf groundsel
Senecio triangularis Hook.
   arrowleaf groundsel
Senecio vulgaris L.
   common groundsel
Senecio werneriifolius (Gray) Gray
   hoary groundsel
Solidago canadensis L.
   Canada goldenrod
Solidago canadensis var. salebrosa (Piper) M.E. Jones
   salebrosa goldenrod
Solidago gigantea Ait.
   giant goldenrod
Solidago missouriensis Nutt.
   Missouri goldenrod
Solidago missouriensis var. fasciculata Holz.
   Missouri goldenrod
Solidago missouriensis var. missouriensis Nutt.
   Missouri goldenrod
Solidago multiradiata Ait.
   mountain goldenrod
Solidago multiradiata var. scopulorum Gray
   manyray goldenrod
Solidago nana Nutt.
   baby goldenrod
Solidago simplex Kunth
   Mt. Albert goldenrod
Solidago simplex ssp. simplex Kunth
   Mt. Albert goldenrod
Solidago simplex ssp. simplex var. nana (Gray) Ringius
   dwarf goldenrod
Solidago simplex ssp. simplex var. simplex Kunth
   Mt. Albert goldenrod
Solidago spectabilis (D.C. Eat.) Gray
   Nevada goldenrod
Solidago velutina DC.
   threenerve goldenrod
Sonchus arvensis L.
   field sowthistle
Sonchus arvensis ssp. arvensis L.
   field sowthistle
Sonchus arvensis ssp. uliginosus (Bieb.) Nyman
   moist sowthistle
Sonchus asper (L.) Hill
   spiny sowthistle
Sonchus oleraceus L.
   common sowthistle
Sphaeromeria argentea Nutt.
   silver chickensage
Sphaeromeria potentilloides (Gray) Heller
   powerful tansy
Sphaeromeria potentilloides var. nitrophila (Cronq.) Holmgren, Shultz & Lowrey
   fivefinger chickensage
Sphaeromeria potentilloides var. potentilloides (Gray) Heller
   fivefinger chickensage
Stenotus acaulis (Nutt.) Nutt.
   stemless mock goldenweed
Stenotus acaulis var. acaulis (Nutt.) Nutt.
   stemless goldenweed
Stenotus acaulis var. glabratus (D.C. Eat.) Kartesz & Gandhi
   stemless mock goldenweed
Stenotus lanuginosus (Gray) Greene
   woolly mock goldenweed
Stenotus lanuginosus var. andersonii (Rydb.) Hall
   Anderson's goldenweed
Stenotus lanuginosus var. lanuginosus (Gray) Greene
   cespitose goldenweed
Stenotus stenophyllus (Gray) Greene
   narrowleaf goldenweed
Stephanomeria exigua Nutt.
   small wirelettuce
Stephanomeria exigua ssp. coronaria (Greene) Gottlieb
   whiteplume wirelettuce
Stephanomeria paniculata Nutt.
   tufted wirelettuce
Stephanomeria spinosa (Nutt.) S. Tomb
   thorn skeletonweed
Stephanomeria tenuifolia (Raf.) Hall
   narrowleaf wirelettuce
Stephanomeria tenuifolia var. myrioclada (D.C. Eat.) Cronq.
   narrowleaf wirelettuce
Stephanomeria tenuifolia var. tenuifolia (Raf.) Hall
   narrowleaf wirelettuce
Tanacetum balsamita L.
   = Balsamita major
Tanacetum parthenium (L.) Schultz-Bip.
   feverfew
Tanacetum vulgare L.
   common tansy
Taraxacum eriophorum Rydb.
   woolbearing dandelion
Taraxacum laevigatum (Willd.) DC.
   rock dandelion
Taraxacum lyratum (Ledeb.) DC.
   harp dandelion
Taraxacum officinale G.H. Weber ex Wiggers
   common dandelion
Taraxacum officinale ssp. ceratophorum (Ledeb.) Schinz ex Thellung
   fleshy dandelion
Taraxacum officinale ssp. officinale G.H. Weber ex Wiggers
   wandering dandelion
Tetradymia canescens DC.
   spineless horsebrush
Tetradymia glabrata Torr. & Gray
   littleleaf horsebrush
Tetradymia spinosa Hook. & Arn.
   shortspine horsebrush
Tetraneuris acaulis (Pursh) Greene
   stemless hymenoxys
Tetraneuris acaulis var. acaulis (Pursh) Greene
   stemless hymenoxys
Tetraneuris acaulis var. arizonica (Greene) Parker
   Arizona hymenoxys
Tetraneuris grandiflora (Torr. & Gray ex Gray) Parker
   graylocks hymenoxys
Tonestus aberrans (A. Nels.) Nesom & Morgan
   Idaho goldenweed
Tonestus lyallii (Gray) A. Nels.
   Lyall's goldenweed
Townsendia alpigena Piper
   Wyoming townsendia
Townsendia alpigena var. alpigena Piper
   mountain townsendia
Townsendia condensata Parry ex Gray
   hairy townsendia
Townsendia exscapa (Richards.) Porter
   stemless townsendia
Townsendia florifer (Hook.) Gray
   showy townsendia
Townsendia leptotes (Gray) Osterhout
   common townsendia
Townsendia parryi D.C. Eat.
   Parry's townsend daisy
Townsendia scapigera D.C. Eat.
   tufted townsend daisy
Tragopogon dubius Scop.
   yellow salsify
Tragopogon mirus Ownbey
   remarkable goatsbeard
Tragopogon miscellus Ownbey
   Moscow salsify
Tragopogon porrifolius L.
   salsify
Tragopogon pratensis L.
   meadow salsify
Trimorpha acris (L.) Nesom
   bitter boreal daisy
Trimorpha lonchophylla var. lonchophylla (Hook.) Nesom
   spearleaf fleabane
Tripleurospermum maritima (L.) W.D.J. Koch
Tripleurospermum maritima ssp. maritima (L.) W.D.J. Koch
Uropappus linearifolius Nutt.
Wyethia X cusickii Piper (pro sp.)
   Cusick's mulesears
Wyethia amplexicaulis (Nutt.) Nutt.
   mulesears wyethia
Wyethia helenioides (DC.) Nutt.
   whitehead wyethia
Xanthium spinosum L.
   spiny cockleburr
Xanthium strumarium L.
   rough cockleburr
Xanthium strumarium var. canadense (P. Mill.) Torr. & Gray
   Canada cockleburr
Xanthium strumarium var. glabratum (DC.) Cronq.
   rough cockleburr
Xanthocephalum sarothrae (Pursh) Shinners
   = Gutierrezia sarothrae

CONVOLVULACEAE
Calystegia pellita (Ledeb.) G. Don
   calystegia
Calystegia sepium (L.) R. Br.
   hedge false bindweed
Calystegia sepium ssp. sepium (L.) R. Br.
   hedge false bindweed
Convolvulus arvensis L.
   field bindweed

CORNACEAE
Cornus canadensis L.
   bunchberry dogwood
Cornus nuttallii Audubon ex Torr. & Gray
   Pacific dogwood
Cornus sericea L.
   redosier dogwood
Cornus sericea ssp. occidentalis (Torr. & Gray) Fosberg
   western dogwood
Cornus sericea ssp. sericea L.
   redosier dogwood

CRASSULACEAE
Crassula viridis (S. Wats.) Bywater & Wickens
   pricklyseed pygmyweed
Rhodiola rosea L.
   = Sedum rosea
Sedum borschii (Clausen) Clausen
   Leiberg stonecrop
Sedum debile S. Wats.
   orpine stonecrop
Sedum integrifolium (Raf.) A. Nels.
   ledge stonecrop
Sedum integrifolium ssp. integrifolium (Raf.) A. Nels.
   entireleaf stonecrop
Sedum lanceolatum Torr.
   spearleaf stonecrop
Sedum lanceolatum ssp. subalpinum (Blank.) Clausen
   subalpine stonecrop
Sedum rosea (L.) Scop.
   roseroot stonecrop
Sedum rupicola G.N. Jones
   curvedleaf stonecrop
Sedum stenopetalum Pursh
   wormleaf stonecrop
Sedum stenopetalum ssp. stenopetalum Pursh
   wormleaf stonecrop
Sedum telephium L.
   witch's moneybags
Sedum telephium ssp. telephium L.
   witch's moneybags

CROSSOSOMATACEAE
Glossopetalon spinescens Gray
   spiny greasebush
Glossopetalon spinescens var. aridum M.E. Jones
   spiny greasebush

CRUCIFERAE
Alyssum alyssoides (L.) L.
   pale madwort
Alyssum desertorum Stapf
   desert madwort
Anelsonia eurycarpa (Gray) J.F. Macbr. & Payson
   daggerpod
Arabidopsis salsuginea (Pallas) N. Busch
   saltwater cress
Arabidopsis thaliana (L.) Heynh.
   mouseear cress
Arabis X divaricarpa A. Nels. (pro sp.)
   spreadingpod rockcress
Arabis cobrensis M.E. Jones
   sagebrush rockcress
Arabis crucisetosa Constance & Rollins
   wetsoil rockcress
Arabis cusickii S. Wats.
   Cusick's rockcress
Arabis drummondii Gray
   Drummond's rockcress
Arabis glabra (L.) Bernh.
   tower rockcress
Arabis glabra var. glabra (L.) Bernh.
   tower rockcress
Arabis hirsuta (L.) Scop.
   hairy rockcress
Arabis hirsuta var. glabrata Torr. & Gray
   mountain rockcress
Arabis hirsuta var. pycnocarpa (M. Hopkins) Rollins
   creamflower rockcress
Arabis holboellii Hornem.
   Holboell's rockcress
Arabis holboellii var. pendulocarpa (A. Nels.) Rollins
   dropseed rockcress
Arabis holboellii var. pinetorum (Tidestrom) Rollins
   Holboell's rockcress
Arabis holboellii var. retrofracta (Graham) Rydb.
   second rockcress
Arabis lemmonii S. Wats.
   Lemmon's rockcress
Arabis lignifera A. Nels.
   desert rockcress
Arabis lyallii S. Wats.
   Lyall's rockcress
Arabis lyallii var. lyallii S. Wats.
   Lyall's rockcress
Arabis lyallii var. nubigena (J.F. Macbr. & Payson) Rollins
   Lyall's rockcress
Arabis microphylla Nutt.
   littleleaf rockcress
Arabis microphylla var. macounii (S. Wats.) Rollins
   Macoun's rockcress
Arabis microphylla var. microphylla Nutt.
   smallleaf rockcress
Arabis nuttallii B.L. Robins.
   Nuttall's rockcress
Arabis puberula Nutt.
   silver rockcress
Arabis sparsiflora Nutt.
   sicklepod rockcress
Arabis sparsiflora var. sparsiflora Nutt.
   sicklepod rockcress
Arabis sparsiflora var. subvillosa (S. Wats.) Rollins
   hairystem rockcress
Arabis suffrutescens S. Wats.
   woody rockcress
Arabis williamsii Rollins
   Wind River rockcress
Arabis williamsii var. saximontana (Rollins) Rollins
   Cross Mountain rockcress
Armoracia rusticana P.G. Gaertn., B. Mey. & Scherb.
   horseradish
Athysanus pusillus (Hook.) Greene
   common sandweed
Barbarea orthoceras Ledeb.
   American yellowrocket
Barbarea vulgaris Ait. f.
   garden yellowrocket
Berteroa incana (L.) DC.
   hoary false madwort
Brassica juncea (L.) Czern.
   India mustard
Brassica nigra (L.) W.D.J. Koch
   black mustard
Brassica rapa L.
   rape mustard
Brassica rapa var. rapa L.
   birdrape
Camelina microcarpa DC.
   littlepod falseflax
Camelina sativa (L.) Crantz
   gold-of-pleasure
Capsella bursa-pastoris (L.) Medik.
   shepherd's purse
Cardamine bellidifolia L.
   alpine bittercress
Cardamine breweri S. Wats.
   Brewer's bittercress
Cardamine breweri var. breweri S. Wats.
   Brewer's bittercress
Cardamine breweri var. leibergii (Holz.) C.L. Hitchc.
   Leiberg's bittercress
Cardamine constancei Detling
   Constance's bittercress
Cardamine cordifolia Gray
   heartleaf bittercress
Cardamine cordifolia var. cordifolia Gray
   heartleaf bittercress
Cardamine cordifolia var. lyallii (S. Wats.) A. Nels. & J.F. Macbr.
Cardamine oligosperma Nutt.
   Idaho bittercress
Cardamine oligosperma var. oligosperma Nutt.
   little western bittercress
Cardamine pensylvanica Muhl. ex Willd.
   Pennsylvania bittercress
Cardaria draba (L.) Desv.
   pepperweed whitetop
Cardaria pubescens (C.A. Mey.) Jarmolenko
   hairy whitetop
Caulanthus crassicaulis (Torr.) S. Wats.
   thickstem wild cabbage
Caulanthus crassicaulis var. crassicaulis (Torr.) S. Wats.
   thickstem wild cabbage
Caulanthus pilosus S. Wats.
   hairy wild cabbage
Chorispora tenella (Pallas) DC.
   crossflower
Conringia orientalis (L.) Dumort.
   hare's ear mustard
Cusickiella douglasii (Gray) Rollins
   alkali false whitlowgrass
Descurainia californica (Gray) O.E. Schulz
   Sierran tansymustard
Descurainia incana (Bernh. ex Fisch. & C.A. Mey.) Dorn
   mountain tansymustard
Descurainia incana ssp. incana (Bernh. ex Fisch. & C.A. Mey.) Dorn
   mountain tansymustard
Descurainia incana ssp. incisa (Engelm.) Kartesz & Gandhi
   mountain tansymustard
Descurainia incana ssp. procera (Greene) Kartesz & Gandhi
   mountain tansymustard
Descurainia incana ssp. viscosa (Rydb.) Kartesz & Gandhi
   mountain tansymustard
Descurainia pinnata (Walt.) Britt.
   western tansymustard
Descurainia pinnata ssp. filipes (Gray) Detling
   western tansymustard
Descurainia pinnata ssp. halictorum (Cockerell) Detling
   western tansymustard
Descurainia pinnata ssp. intermedia (Rydb.) Detling
   western tansymustard
Descurainia pinnata ssp. nelsonii (Rydb.) Detling
   Nelson's tansymustard
Descurainia pinnata ssp. paysonii Detling
   Payson's tansymustard
Descurainia sophia (L.) Webb ex Prantl
   herb sophia
Draba albertina Greene
   slender whitlowgrass
Draba argyrea Rydb.
   silver whitlowgrass
Draba aurea Vahl ex Hornem.
   golden whitlowgrass
Draba breweri S. Wats.
   cushion whitlowgrass
Draba breweri var. cana (Rydb.) Rollins
Draba crassifolia Graham
   snowbed whitlowgrass
Draba crassifolia var. crassifolia Graham
   snowbed whitlowgrass
Draba densifolia Nutt.
   denseleaf whitlowgrass
Draba fladnizensis Wulfen
   Austrian whitlowgrass
Draba globosa Payson
   beavertip whitlowgrass
Draba hitchcockii Rollins
   Lost River whitlowgrass
Draba incerta Payson
   Yellowstone whitlowgrass
Draba lonchocarpa Rydb.
   lancepod whitlowgrass
Draba lonchocarpa var. lonchocarpa Rydb.
   lancepod whitlowgrass
Draba nemorosa L.
   woodland whitlowgrass
Draba oligosperma Hook.
   fewseed whitlowgrass
Draba oreibata J.F. Macbr. & Payson ex Payson
   limestone whitlowgrass
Draba paysonii J.F. Macbr.
   Payson's whitlowgrass
Draba paysonii var. treleasii (O.E. Schulz) C.L. Hitchc.
   Trelease's whitlowgrass
Draba platycarpa Torr. & Gray
   broadpod whitlowgrass
Draba praealta Greene
   tall whitlowgrass
Draba reptans (Lam.) Fern.
   Carolina whitlowgrass
Draba sphaerocarpa J.F. Macbr. & Payson
   globefruit whitlowgrass
Draba trichocarpa Rollins
   Stanley Creek whitlowgrass
Draba verna L.
   spring whitlowgrass
Erucastrum gallicum (Willd.) O.E. Schulz
   common dogmustard
Erysimum capitatum (Dougl. ex Hook.) Greene
   sanddune wallflower
Erysimum capitatum var. argillosum (Greene) R.J. Davis
   sanddune wallflower
Erysimum capitatum var. capitatum (Dougl. ex Hook.) Greene
   sanddune wallflower
Erysimum capitatum var. perenne (S. Wats. ex Coville) R.J. Davis
   sanddune wallflower
Erysimum cheiranthoides L.
   wormseed wallflower
Erysimum inconspicuum (S. Wats.) MacM.
   shy wallflower
Erysimum inconspicuum var. inconspicuum (S. Wats.) MacM.
   shy wallflower
Erysimum occidentale (S. Wats.) B.L. Robins.
   pale wallflower
Erysimum repandum L.
   spreading wallflower
Euclidium syriacum (L.) Ait. f.
   Syrian mustard
Halimolobos perplexa (Henderson) Rollins
   perplexed halimolobos
Halimolobos perplexa var. lemhiensis C.L. Hitchc.
   Lemhi halimolobos
Halimolobos perplexa var. perplexa (Henderson) Rollins
   perplexed halimolobos
Halimolobos virgata (Nutt.) O.E. Schulz
   rod halimolobos
Hesperis matronalis L.
   dames rocket
Hutchinsia procumbens (L.) Desv.
   prostrate hutchinsia
Idahoa scapigera (Hook.) A. Nels. & J.F. Macbr.
   oldstem idahoa
Isatis tinctoria L.
   Dyer's woad
Lepidium bourgeauanum Thellung
   Bourgeau's pepperweed
Lepidium campestre (L.) Ait. f.
   field pepperweed
Lepidium davisii Rollins
   Davis' pepperweed
Lepidium densiflorum Schrad.
   common pepperweed
Lepidium densiflorum var. elongatum (Rydb.) Thellung
   tall pepperweed
Lepidium densiflorum var. pubecarpum (A. Nels.) Thellung
   babyseed pepperweed
Lepidium dictyotum Gray
   net pepperweed
Lepidium dictyotum var. dictyotum Gray
   alkali pepperweed
Lepidium latifolium L.
   broadleaved pepperweed
Lepidium montanum Nutt.
   mountain pepperweed
Lepidium montanum var. montanum Nutt.
   mountain pepperweed
Lepidium papilliferum (Henderson) A. Nels. & J.F. Macbr.
   Idaho pepperweed
Lepidium perfoliatum L.
   clasping pepperweed
Lepidium ramosissimum A. Nels.
   manybranched pepperweed
Lepidium virginicum L.
   Virginia pepperweed
Lepidium virginicum var. medium (Greene) C.L. Hitchc.
   medium pepperweed
Lepidium virginicum var. pubescens (Greene) Thellung
   hairy pepperweed
Lesquerella alpina (Nutt.) S. Wats.
   alpine bladderpod
Lesquerella carinata Rollins
   Idaho bladderpod
Lesquerella douglasii S. Wats.
   Douglas' bladderpod
Lesquerella kingii S. Wats.
   King bladderpod
Lesquerella kingii ssp. diversifolia (Greene) Rollins & Shaw
   Wallowa bladderpod
Lesquerella kingii ssp. kingii S. Wats.
   King bladderpod
Lesquerella kingii ssp. kingii var. cobrensis Rollins & Shaw
   King bladderpod
Lesquerella multiceps Maguire
   manyhead bladderpod
Lesquerella occidentalis S. Wats.
   western bladderpod
Lesquerella occidentalis ssp. occidentalis S. Wats.
   western bladderpod
Lesquerella paysonii Rollins
   Payson's bladderpod
Lesquerella prostrata A. Nels.
   low bladderpod
Malcolmia africana (L.) Ait. f.
   African mustard
Nasturtium nasturtium-aquaticum (L.) Karsten
   = Rorippa nasturtium-aquaticum
Phoenicaulis cheiranthoides Nutt.
   wallflower phoenicaulis
Physaria acutifolia Rydb.
   sharpleaf twinpod
Physaria acutifolia var. acutifolia Rydb.
   southern twinpod
Physaria didymocarpa (Hook.) Gray
   common twinpod
Physaria didymocarpa var. lyrata C.L. Hitchc.
   Idaho twinpod
Physaria geyeri (Hook.) Gray
   Geyer's twinpod
Physaria geyeri var. geyeri (Hook.) Gray
   Geyer's twinpod
Physaria geyeri var. purpurea Rollins
   purple twinpod
Physaria oregona S. Wats.
   Oregon twinpod
Polyctenium fremontii (S. Wats.) Greene
   Fremont's polyctenium
Polyctenium fremontii var. fremontii (S. Wats.) Greene
   Fremont's combleaf
Raphanus sativus L.
   wild radish
Rorippa alpina (S. Wats.) Rydb.
   alpine yellowcress
Rorippa austriaca (Crantz) Bess.
   Austrian yellowcress
Rorippa calycina (Engelm.) Rydb.
   persistent sepal yellowcress
Rorippa curvipes Greene
   bluntleaf yellowcress
Rorippa curvipes var. curvipes Greene
   bluntleaf yellowcress
Rorippa curvipes var. truncata (Jepson) Rollins
Rorippa curvisiliqua (Hook.) Bess. ex Britt.
   curvepod yellowcress
Rorippa curvisiliqua var. curvisiliqua (Hook.) Bess. ex Britt.
   curvepod yellowcress
Rorippa curvisiliqua var. lyrata (Nutt.) M.E. Peck ex C.L. Hitchc.
   lyrateleaf yellowcress
Rorippa curvisiliqua var. orientalis R. Stuckey
   oriental yellowcress
Rorippa curvisiliqua var. procumbens R. Stuckey
   curvepod yellowcress
Rorippa curvisiliqua var. spatulata R. Stuckey
   curvepod yellowcress
Rorippa nasturtium-aquaticum (L.) Hayek
   watercress
Rorippa palustris (L.) Bess.
   bog yellowcress
Rorippa palustris ssp. fernaldiana (Butters & Abbe) Jonsell
   Fernald's yellowcress
Rorippa palustris ssp. hispida (Desv.) Jonsell
   hispid yellowcress
Rorippa palustris ssp. occidentalis (S. Wats.) Abrams
   western bog yellowcress
Rorippa sinuata (Nutt.) A.S. Hitchc.
   spreading yellowcress
Rorippa sylvestris (L.) Bess.
   creeping yellowcress
Rorippa tenerrima Greene
   Modoc yellowcress
Rorippa teres (Michx.) R. Stuckey
   southern marsh yellowcress
Schoenocrambe linifolia (Nutt.) Greene
   flaxleaf plainsmustard
Sinapis alba L.
   white mustard
Sinapis arvensis L.
   charlock mustard
Sinapis nigra L.
   = Brassica nigra
Sisymbrium altissimum L.
   tall tumblemustard
Sisymbrium loeselii L.
   small tumbleweed mustard
Sisymbrium officinale (L.) Scop.
   hedgemustard
Smelowskia calycina (Steph. ex Willd.) C.A. Mey.
   alpine smelowskia
Stanleya confertiflora (B.L. Robins.) T.J. Howell
   Oregon princesplume
Stanleya pinnata (Pursh) Britt.
   desert princesplume
Stanleya pinnata var. pinnata (Pursh) Britt.
   pinnate princesplume
Stanleya tomentosa Parry
   hairy princesplume
Stanleya tomentosa var. runcinata (Rydb.) Rollins
   woolly princesplume
Stanleya viridiflora Nutt.
   green princesplume
Streptanthella longirostris (S. Wats.) Rydb.
   longbeak streptanthella
Streptanthus cordatus Nutt.
   heartleaf twistflower
Subularia aquatica L.
   waterawlwort
Subularia aquatica var. americana (Mulligan & Calder) Boivin
   American waterawlwort
Teesdalia nudicaulis (L.) Ait. f.
   barestem teesdalia
Thelypodium eucosmum B.L. Robins.
   world thelypody
Thelypodium integrifolium (Nutt.) Endl. ex Walp.
   entireleaved thelypody
Thelypodium integrifolium ssp. integrifolium (Nutt.) Endl. ex Walp.
   entireleaved thelypody
Thelypodium laciniatum (Hook.) Endl. ex Walp.
   cutleaf thelypody
Thelypodium milleflorum A. Nels.
   manyflower thelypody
Thelypodium repandum Rollins
   wavyleaf thelypody
Thelypodium sagittatum (Nutt. ex Torr. & Gray) Endl. ex Walp.
   arrow thelypody
Thelypodium sagittatum ssp. sagittatum (Nutt. ex Torr. & Gray) Endl. ex Walp.
   arrow thelypody
Thlaspi arvense L.
   field pennycress
Thlaspi idahoense Payson
   alpine pennycress
Thlaspi idahoense var. aileeniae (Rollins) Rollins
Thlaspi montanum L.
   alpine pennycress
Thlaspi montanum var. montanum L.
   alpine pennycress
Thlaspi parviflorum A. Nels.
   meadow pennycress
Thysanocarpus curvipes Hook.
   sand fringepod

CUCURBITACEAE
Echinocystis lobata (Michx.) Torr. & Gray
   wild cucumber
Marah oreganus (Torr. ex S. Wats.) T.J. Howell
   coastal manroot

CUPRESSACEAE
Juniperus communis L.
   common juniper
Juniperus communis var. montana Ait.
   common juniper
Juniperus occidentalis Hook.
   western juniper
Juniperus occidentalis var. occidentalis Hook.
   western juniper
Juniperus osteosperma (Torr.) Little
   Utah juniper
Juniperus scopulorum Sarg.
   Rocky Mountain juniper
Juniperus sibirica Burgsd.
   = Juniperus communis var. montana
Thuja plicata Donn ex D. Don
   western redcedar

CUSCUTACEAE
Cuscuta approximata Bab.
   alfalfa dodder
Cuscuta approximata var. urceolata (Kunze) Yuncker
   alfalfa dodder
Cuscuta californica Hook. & Arn.
   chaparral dodder
Cuscuta californica var. breviflora Engelm.
   California dodder
Cuscuta cephalanthi Engelm.
   buttonbush dodder
Cuscuta denticulata Engelm.
   desert dodder
Cuscuta denticulata var. denticulata Engelm.
   smalltooth dodder
Cuscuta gronovii Willd. ex J.A. Schultes
   scaldweed
Cuscuta gronovii var. gronovii Willd. ex J.A. Schultes
   love dodder
Cuscuta indecora Choisy
   bigseed alfalfa dodder
Cuscuta indecora var. neuropetala (Engelm.) A.S. Hitchc.
   bigseed dodder
Cuscuta pentagona Engelm.
   fiveangled dodder
Cuscuta pentagona var. pentagona Engelm.
   fiveangled dodder

DENNSTAEDTIACEAE
Pteridium aquilinum (L.) Kuhn
   western brackenfern
Pteridium aquilinum var. pubescens Underwood
   hairy brackenfern

DIPSACACEAE
Dipsacus fullonum L.
   Fuller's teasel
Knautia arvensis (L.) Coult.
   field scabiosa

DROSERACEAE
Drosera anglica Huds.
   English sundew
Drosera longifolia L.
   = Drosera anglica
Drosera rotundifolia L.
   roundleaf sundew

DRYOPTERIDACEAE
Athyrium americanum (Butters) Maxon
   alpine ladyfern
Athyrium filix-femina (L.) Roth
   common ladyfern
Athyrium filix-femina ssp. cyclosorum (Rupr.) C. Christens.
   subarctic ladyfern
Cystopteris fragilis (L.) Bernh.
   brittle bladderfern
Dryopteris carthusiana (Vill.) H.P. Fuchs
   spinulose woodfern
Dryopteris cristata (L.) Gray
   crested woodfern
Dryopteris expansa (K. Presl) Fraser-Jenkins & Jermy
   spreading woodfern
Dryopteris filix-mas (L.) Schott
   male fern
Dryopteris intermedia (Muhl. ex Willd.) Gray
   intermediate woodfern
Gymnocarpium dryopteris (L.) Newman
   western oakfern
Gymnocarpium robertianum (Hoffmann) Newman
   scented oakfern
Polystichum andersonii Hopkins
   Anderson's hollyfern
Polystichum braunii (Spenner) Fee
   Braun's hollyfern
Polystichum kruckebergii W.H. Wagner
   Kruckeberg's hollyfern
Polystichum lemmonii Underwood
   Lemmon's hollyfern
Polystichum lonchitis (L.) Roth
   northern hollyfern
Polystichum munitum (Kaulfuss) K. Presl
   western swordfern
Polystichum scopulinum (D.C. Eat.) Maxon
   mountain hollyfern
Woodsia oregana D.C. Eat.
   Oregon woodsia
Woodsia oregana ssp. oregana D.C. Eat.
   Oregon cliff fern
Woodsia scopulina D.C. Eat.
   Rocky Mountain woodsia

ELAEAGNACEAE
Elaeagnus angustifolia L.
   Russian olive
Elaeagnus commutata Bernh. ex Rydb.
   silverberry
Shepherdia argentea (Pursh) Nutt.
   silver buffaloberry
Shepherdia canadensis (L.) Nutt.
   russet buffaloberry

ELATINACEAE
Elatine californica Gray
   California waterwort
Elatine triandra Schkuhr
   threestamen waterwort

EQUISETACEAE
Equisetum X ferrissii Clute (pro sp.)
   Ferriss' horsetail
Equisetum X mackaii (Newm.) Brichan
   MacKai's horsetail
Equisetum arvense L.
   field horsetail
Equisetum fluviatile L.
   water horsetail
Equisetum hyemale L.
   scouringrush horsetail
Equisetum hyemale var. affine (Engelm.) A.A. Eat.
   scouringrush horsetail
Equisetum laevigatum A. Braun
   smooth horsetail
Equisetum palustre L.
   marsh horsetail
Equisetum pratense Ehrh.
   meadow horsetail
Equisetum scirpoides Michx.
   dwarf scouringrush
Equisetum sylvaticum L.
   woodland horsetail
Equisetum telmateia Ehrh.
   giant horsetail
Equisetum telmateia var. braunii (Milde) Milde
   giant horsetail
Equisetum variegatum Schleich. ex F. Weber & D.M.H. Mohr
   variegated scouringrush
Equisetum variegatum var. variegatum Schleich. ex F. Weber & D.M.H. Mohr
   variegated scouringrush

ERICACEAE
Allotropa virgata Torr. & Gray ex Gray
   sugarstick
Andromeda polifolia L.
   bog rosemary
Arctostaphylos uva-ursi (L.) Spreng.
   kinnikinnick
Cassiope mertensiana (Bong.) D. Don
   western moss heather
Cassiope mertensiana var. gracilis (Piper) C.L. Hitchc.
   western moss heather
Chimaphila menziesii (R. Br. ex D. Don) Spreng.
   little prince's pine
Chimaphila umbellata (L.) W. Bart.
   pipsissewa
Chimaphila umbellata ssp. occidentalis (Rydb.) Hulten
   pipsissewa
Gaultheria hispidula (L.) Muhl. ex Bigelow
   creeping snowberry
Gaultheria humifusa (Graham) Rydb.
   alpine spicywintergreen
Gaultheria ovatifolia Gray
   western teaberry
Kalmia microphylla (Hook.) Heller
   alpine laurel
Kalmia polifolia Wangenh.
   bog laurel
Kalmia polifolia ssp. microphylla (Hook.) Calder & Taylor
   = Kalmia microphylla
Ledum glandulosum Nutt.
   Western Labradortea
Ledum groenlandicum Oeder
   bog Labradortea
Menziesia ferruginea Sm.
   rusty menziesia
Moneses uniflora (L.) Gray
   single delight
Moneses uniflora ssp. uniflora (L.) Gray
   oneflowered woodnymph
Monotropa hypopithys L.
   pinesap
Monotropa uniflora L.
   Indianpipe
Orthilia secunda (L.) House
   sidebells wintergreen
Oxycoccus 
   = Vaccinium 
Phyllodoce X intermedia (Hook.) Rydb. (pro sp.)
   hybrid mountainheath
Phyllodoce empetriformis (Sm.) D. Don
   pink mountainheath
Phyllodoce glanduliflora (Hook.) Coville
   yellow mountainheath
Pterospora andromedea Nutt.
   woodland pinedrops
Pyrola asarifolia Michx.
   liverleaf wintergreen
Pyrola asarifolia ssp. asarifolia Michx.
   liverleaf wintergreen
Pyrola asarifolia ssp. bracteata (Hook.) Haber
   pink wintergreen
Pyrola chlorantha Sw.
   greenflowered wintergreen
Pyrola elliptica Nutt.
   waxflower shinleaf
Pyrola minor L.
   snowline wintergreen
Pyrola picta Sm.
   whiteveined wintergreen
Pyrola rotundifolia ssp. asarifolia (Michx.) A.& D. Love
   = Pyrola asarifolia ssp. asarifolia
Pyrola secunda L.
   = Orthilia secunda
Rhododendron albiflorum Hook.
   Cascade azalea
Vaccinium X nubigenum Fern. (pro sp.)
   vaccinium
Vaccinium cespitosum Michx.
   dwarf blueberry
Vaccinium cespitosum var. cespitosum Michx.
   tall bilberry
Vaccinium membranaceum Dougl. ex Torr.
   blue huckleberry
Vaccinium myrtillus L.
   whortleberry
Vaccinium ovalifolium Sm.
   ovalleaf blueberry
Vaccinium oxycoccos L.
   small cranberry
Vaccinium scoparium Leib. ex Coville
   grouse whortleberry
Vaccinium uliginosum L.
   bog blueberry

EUPHORBIACEAE
Chamaesyce glyptosperma (Engelm.) Small
   ribseed sandmat
Chamaesyce maculata (L.) Small
   spotted sandmat
Chamaesyce ocellata (Dur. & Hilg.) Millsp.
   Contura Creek sandmat
Chamaesyce ocellata ssp. arenicola (Parish) Thorne
   Contura Creek sandmat
Chamaesyce serpyllifolia (Pers.) Small
   thymeleaf sandmat
Chamaesyce serpyllifolia ssp. serpyllifolia (Pers.) Small
   thymeleaf sandmat
Croton setigerus Hook.
   croton
Eremocarpus setigerus (Hook.) Benth.
   = Croton setigerus
Euphorbia cyparissias L.
   cypress spurge
Euphorbia esula L.
   wolf's milk
Euphorbia glyptosperma Engelm.
   = Chamaesyce glyptosperma
Euphorbia maculata L.
   = Chamaesyce maculata
Euphorbia peplus L.
   petty spurge
Euphorbia robusta (Engelm.) Small
   Rocky Mountain spurge
Euphorbia serpyllifolia Pers.
   = Chamaesyce serpyllifolia ssp. serpyllifolia
Euphorbia spathulata Lam.
   warty spurge
Galarhoeus peplus (L.) Haw.
   = Euphorbia peplus

FUMARIACEAE
Corydalis aurea Willd.
   scrambledeggs
Corydalis caseana Gray
   Sierran fumewort
Corydalis caseana ssp. cusickii (S. Wats.) G.B. Ownbey
   Cusick's fumewort
Corydalis caseana ssp. hastata (Rydb.) G.B. Ownbey
   Sierran fumewort
Dicentra cucullaria (L.) Bernh.
   dutchman's breeches
Dicentra formosa (Haw.) Walp.
   Pacific bleedinghearts
Dicentra uniflora Kellogg
   longhorn steershead

GENTIANACEAE
Centaurium erythraea Rafn
   European centaury
Centaurium exaltatum (Griseb.) W. Wight ex Piper
   desert centaury
Centaurium muehlenbergii (Griseb.) W. Wight ex Piper
   Muhlenberg's centaury
Erythraea centaurium of authors
   = Centaurium erythraea
Frasera albicaulis Dougl. ex Griseb.
   whitestem elkweed
Frasera albicaulis var. albicaulis Dougl. ex Griseb.
   whitestem elkweed
Frasera albicaulis var. cusickii (Gray) C.L. Hitchc.
   Cusick's elkweed
Frasera albicaulis var. idahoensis (St. John) C.L. Hitchc.
   Idaho elkweed
Frasera albicaulis var. nitida (Benth.) C.L. Hitchc.
   whitestem elkweed
Frasera fastigiata (Pursh) Heller
   clustered elkweed
Frasera montana Mulford
   white elkweed
Frasera speciosa Dougl. ex Griseb.
   showy frasera
Gentiana acuta Michx.
   = Gentianella amarella ssp. acuta
Gentiana affinis Griseb.
   pleated gentian
Gentiana amarella L. auct. p.p.
   = Gentianella amarella ssp. acuta
Gentiana bigelovii Gray
   = Gentiana affinis
Gentiana calycosa Griseb.
   Rainier pleated gentian
Gentiana elegans A. Nels.
   = Gentianopsis thermalis
Gentiana parryi Engelm.
   Parry's gentian
Gentiana prostrata Haenke
   pygmy gentian
Gentiana simplex Gray
   = Gentianopsis simplex
Gentiana tenella Rottb.
   = Gentianella tenella ssp. tenella
Gentiana thermalis Kuntze
   = Gentianopsis thermalis
Gentianella amarella (L.) Boerner
   autumn dwarfgentian
Gentianella amarella ssp. acuta (Michx.) J. Gillett
   autumn dwarfgentian
Gentianella amarella ssp. heterosepala (Engelm.) J. Gillett
   autumn dwarfgentian
Gentianella propinqua (Richards.) J. Gillett
   fourpart dwarfgentian
Gentianella tenella (Rottb.) Boerner
   Dane's dwarfgentian
Gentianella tenella ssp. tenella (Rottb.) Boerner
   Dane's dwarfgentian
Gentianopsis simplex (Gray) Iltis
   oneflower fringedgentian
Gentianopsis thermalis (Kuntze) Iltis
   Rocky Mountain fringedgentian
Lomatogonium rotatum (L.) Fries ex Fern.
   marsh felwort
Swertia perennis L.
   star gentian
Swertia radiata (Kellogg) Kuntze
   = Frasera speciosa

GERANIACEAE
Erodium cicutarium (L.) L'Her. ex Ait.
   redstem stork's bill
Geranium bicknellii Britt.
   Bicknell's cranesbill
Geranium carolinianum L.
   Carolina geranium
Geranium pusillum L.
   small geranium
Geranium richardsonii Fisch. & Trautv.
   Richardson's geranium
Geranium viscosissimum Fisch. & C.A. Mey. ex C.A. Mey.
   sticky geranium
Geranium viscosissimum var. nervosum (Rydb.) C.L. Hitchc.
   sticky purple geranium
Geranium viscosissimum var. viscosissimum Fisch. & C.A. Mey. ex C.A. Mey.
   sticky purple geranium

GROSSULARIACEAE
Grossularia 
   = Ribes 
Ribes acerifolium T.J. Howell
   mapleleaf currant
Ribes aureum Pursh
   golden currant
Ribes aureum var. aureum Pursh
   golden currant
Ribes cereum Dougl.
   wax currant
Ribes cereum var. cereum Dougl.
   wax currant
Ribes cereum var. colubrinum C.L. Hitchc.
   wax currant
Ribes cereum var. pedicellare Brewer & S. Wats.
   whisky currant
Ribes hudsonianum Richards.
   northern black currant
Ribes hudsonianum var. hudsonianum Richards.
   Hudson Bay currant
Ribes hudsonianum var. petiolare (Dougl.) Jancz.
   western black currant
Ribes inerme Rydb.
   whitestem gooseberry
Ribes inerme var. inerme Rydb.
   whitestem gooseberry
Ribes lacustre (Pers.) Poir.
   prickly currant
Ribes laxiflorum Pursh
   trailing black currant
Ribes montigenum McClatchie
   gooseberry currant
Ribes niveum Lindl.
   snow currant
Ribes oxyacanthoides L.
   Canadian gooseberry
Ribes oxyacanthoides ssp. cognatum (Greene) Sinnott
   stream currant
Ribes oxyacanthoides ssp. hendersonii (C.L. Hitchc.) Sinnott
   Henderson's currant
Ribes oxyacanthoides ssp. irriguum (Dougl.) Sinnott
   Idaho gooseberry
Ribes oxyacanthoides ssp. setosum (Lindl.) Sinnott
   inland gooseberry
Ribes sanguineum Pursh
   redflower currant
Ribes sanguineum var. sanguineum Pursh
   redflower currant
Ribes velutinum Greene
   desert gooseberry
Ribes velutinum var. gooddingii (M.E. Peck) C.L. Hitchc.
   Gooding's gooseberry
Ribes velutinum var. velutinum Greene
   desert gooseberry
Ribes viscosissimum Pursh
   sticky currant
Ribes viscosissimum var. viscosissimum Pursh
   sticky currant
Ribes wolfii Rothrock
   Wolf's currant

HALORAGACEAE
Myriophyllum aquaticum (Vell.) Verdc.
   parrot feather watermilfoil
Myriophyllum quitense Kunth
   Andean watermilfoil
Myriophyllum sibiricum Komarov
   shortspike watermilfoil
Myriophyllum verticillatum L.
   whorlleaf watermilfoil

HIPPURIDACEAE
Hippuris vulgaris L.
   common marestail

HYDRANGEACEAE
Philadelphus lewisii Pursh
   Lewis' mockorange
Philadelphus lewisii var. gordonianus (Lindl.) Jepson
   Gordon's mockorange
Philadelphus lewisii var. helleri (Rydb.) Hu
   Heller's mockorange
Philadelphus lewisii var. intermedius (A. Nels.) Hu
   intermediate mockorange
Philadelphus lewisii var. lewisii Pursh
   Lewis' mockorange
Philadelphus lewisii var. platyphyllus (Rydb.) Hu
   Lewis' mockorange
Philadelphus oreganus Nutt. ex Torr. & Gray
   Oregon mockorange
Philadelphus trichothecus Hu
   Columbian mockorange

HYDROCHARITACEAE
Elodea bifoliata St. John
   twoleaf waterweed
Elodea canadensis Michx.
   Canadian waterweed
Elodea nuttallii (Planch.) St. John
   western waterweed

HYDROPHYLLACEAE
Ellisia nyctelea (L.) L.
   Aunt Lucy
Hesperochiron californicus (Benth.) S. Wats.
   California hesperochiron
Hesperochiron pumilus (Dougl. ex Griseb.) Porter
   dwarf hesperochiron
Hydrophyllum capitatum Dougl. ex Benth.
   ballhead waterleaf
Hydrophyllum capitatum var. alpinum S. Wats.
   alpine waterleaf
Hydrophyllum capitatum var. capitatum Dougl. ex Benth.
   ballhead waterleaf
Hydrophyllum fendleri (Gray) Heller
   Fendler's waterleaf
Hydrophyllum fendleri var. albifrons (Heller) J.F. Macbr.
   white waterleaf
Hydrophyllum fendleri var. fendleri (Gray) Heller
   Fendler's waterleaf
Hydrophyllum occidentale (S. Wats.) Gray
   western waterleaf
Nama aretioides (Hook. & Arn.) Brand
   ground nama
Nama densum J.G. Lemmon
   leafy nama
Nama densum var. parviflorum (Greenm.) C.L. Hitchc.
   leafy fiddleleaf
Nemophila breviflora Gray
   basin nemophila
Nemophila kirtleyi Henderson
   Kirtley's nemophila
Nemophila parviflora Dougl. ex Benth.
   smallflower nemophila
Nemophila parviflora var. austiniae (Eastw.) Brand
   groovelover
Nemophila pedunculata Dougl. ex Benth.
   littlefoot nemophila
Phacelia franklinii (R. Br.) Gray
   Franklin's phacelia
Phacelia glandulifera Piper
Phacelia glandulosa Nutt.
   glandular phacelia
Phacelia hastata Dougl. ex Lehm.
   silverleaf phacelia
Phacelia hastata var. hastata Dougl. ex Lehm.
   silverleaf phacelia
Phacelia heterophylla Pursh
   varileaf phacelia
Phacelia heterophylla ssp. heterophylla Pursh
   varileaf phacelia
Phacelia heterophylla ssp. virgata (Greene) Heckard
   varileaf phacelia
Phacelia idahoensis Henderson
   Idaho phacelia
Phacelia incana Brand
   hoary phacelia
Phacelia inconspicua Greene
   hidden scorpionweed
Phacelia ivesiana Torr.
   Ives' phacelia
Phacelia ivesiana var. ivesiana Torr.
   Ives' phacelia
Phacelia leptosepala Rydb.
   narrowsepal scorpionweed
Phacelia linearis (Pursh) Holz.
   threadleaf phacelia
Phacelia lutea (Hook. & Arn.) J.T. Howell
   yellow phacelia
Phacelia lutea var. calva Cronq.
   Owyhee phacelia
Phacelia lutea var. lutea (Hook. & Arn.) J.T. Howell
   yellow phacelia
Phacelia lyallii (Gray) Rydb.
   alpine phacelia
Phacelia minutissima Henderson
   small phacelia
Phacelia procera Gray
   mountain phacelia
Phacelia ramosissima Dougl. ex Lehm.
   branching phacelia
Phacelia ramosissima var. subglabra M.E. Peck
   branching phacelia
Phacelia rattanii Gray
   Rattan's phacelia
Phacelia scopulina (A. Nels.) J.T. Howell
   Debeque phacelia
Phacelia scopulina var. scopulina (A. Nels.) J.T. Howell
   Debeque phacelia
Phacelia sericea (Graham) Gray
   silky phacelia
Phacelia sericea ssp. ciliosa (Rydb.) Gillett
   purplefringe
Phacelia sericea ssp. sericea (Graham) Gray
   purplefringe
Phacelia thermalis Greene
   heated phacelia
Romanzoffia sitchensis Bong.
   Sitka mistmaiden

IRIDACEAE
Iris missouriensis Nutt.
   Rocky Mountain iris
Olsynium douglasii (A. Dietr.) Bickn.
   Douglas' olsynium
Olsynium douglasii var. douglasii (A. Dietr.) Bickn.
   Douglas' olsynium
Olsynium douglasii var. inflatum (Suksdorf) Cholewa & D. Henderson
   inflated olsynium
Sisyrinchium halophilum Greene
   Nevada blueeyed grass
Sisyrinchium idahoense Bickn.
   Idaho blueeyed grass
Sisyrinchium idahoense var. idahoense Bickn.
   Idaho blueeyed grass
Sisyrinchium idahoense var. occidentale (Bickn.) D. Henderson
   Idaho blueeyed grass
Sisyrinchium montanum Greene
   mountain blueeyed grass
Sisyrinchium montanum var. montanum Greene
   mountain blueeyed grass
Sisyrinchium septentrionale Bickn.
   northern blueeyed grass

ISOETACEAE
Isoetes bolanderi Engelm.
   Bolander's quillwort
Isoetes bolanderi var. bolanderi Engelm.
   Bolander's quillwort
Isoetes howellii Engelm.
   Howell's quillwort
Isoetes nuttallii A. Braun ex Engelm.
   Nuttall's quillwort
Isoetes nuttallii var. nuttallii A. Braun ex Engelm.
   Nuttall's quillwort
Isoetes occidentalis Henderson
   western quillwort

JUNCAGINACEAE
Lilaea scilloides (Poir.) Hauman
   awlleaf lilaea
Triglochin maritimum L.
   seaside arrowgrass
Triglochin palustre L.
   marsh arrowgrass

LABIATAE
Agastache cusickii (Greenm.) Heller
   Cusick's giant hyssop
Agastache cusickii var. parva Cronq.
   = Agastache cusickii
Agastache urticifolia (Benth.) Kuntze
   nettleleaf giant hyssop
Agastache urticifolia var. urticifolia (Benth.) Kuntze
   nettleleaf giant hyssop
Dracocephalum parviflorum Nutt.
   American dragonhead
Dracocephalum thymiflorum L.
   thymeleaf dragonhead
Galeopsis tetrahit L.
   brittlestem hempnettle
Galeopsis tetrahit var. tetrahit L.
   brittlestem hempnettle
Glechoma hederacea L.
   groundivy
Glechoma hederacea var. hederacea L.
   groundivy
Lamium amplexicaule L.
   henbit deadnettle
Lamium purpureum L.
   purple deadnettle
Leonurus cardiaca L.
   common motherwort
Lycopus americanus Muhl. ex W. Bart.
   American waterhorehound
Lycopus asper Greene
   rough bugleweed
Lycopus uniflorus Michx.
   northern bugleweed
Marrubium vulgare L.
   horehound
Mentha X piperita L. (pro sp.)
   peppermint
Mentha arvensis L.
   wild mint
Mentha arvensis auct. non L.
   = Mentha canadensis
Mentha canadensis L.
   Canadian mint
Mentha spicata L.
   spearmint
Mentha viridis L.
   = Mentha spicata
Micromeria chamissonis (Benth.) Greene
   = Satureja douglasii
Monarda fistulosa L.
   wildbergamot beebalm
Monarda fistulosa ssp. fistulosa L.
   wildbergamot beebalm
Monarda fistulosa ssp. fistulosa var. menthifolia (Graham) Fern.
   mintleaf beebalm
Monarda menthifolia Graham
   = Monarda fistulosa ssp. fistulosa var. menthifolia
Monardella glauca Greene
Monardella odoratissima Benth.
   Pacific monardella
Monardella odoratissima ssp. odoratissima Benth.
   alpine mountainbalm
Nepeta cataria L.
   catnip
Physostegia parviflora Nutt. ex Gray
   western false dragonhead
Prunella vulgaris L.
   common selfheal
Prunella vulgaris ssp. lanceolata (W. Bart.) Hulten
   lance selfheal
Prunella vulgaris ssp. vulgaris L.
   common selfheal
Salvia carnosa Dougl. ex Greene
   = Salvia dorrii ssp. dorrii var. incana
Salvia dorrii (Kellogg) Abrams
   grayball sage
Salvia dorrii ssp. dorrii (Kellogg) Abrams
   Dorr's sage
Salvia dorrii ssp. dorrii var. dorrii (Kellogg) Abrams
   Dorr's sage
Salvia dorrii ssp. dorrii var. incana (Benth.) Strachan
   purple sage
Salvia pratensis L.
   introduced sage
Salvia sclarea L.
   Europe sage
Satureja douglasii (Benth.) Briq.
   yerba buena
Scutellaria angustifolia Pursh
   narrowleaf skullcap
Scutellaria antirrhinoides Benth.
   nose skullcap
Scutellaria epilobiifolia A. Hamilton
   = Scutellaria galericulata
Scutellaria galericulata L.
   marsh skullcap
Scutellaria lateriflora L.
   blue skullcap
Scutellaria lateriflora var. lateriflora L.
   blue skullcap
Scutellaria nana Gray
   dwarf skullcap
Stachys palustris L.
   marsh hedgenettle
Stachys palustris ssp. pilosa (Nutt.) Epling
   marsh hedgenettle
Stachys rigida Nutt. ex Benth.
   = Stachys palustris ssp. pilosa
Teucrium canadense L.
   Candad germander
Teucrium canadense var. occidentale (Gray) McClintock & Epling
   western germander
Trichostema oblongum Benth.
   oblong bluecurls

LEGUMINOSAE
Alhagi camelorum Fisch.
   = Alhagi maurorum
Alhagi maurorum Medik.
   camelthorn
Amorpha fruticosa L.
   desert indigobush
Astragalus adanus A. Nels.
   Boise milkvetch
Astragalus adsurgens Pallas
   standing milkvetch
Astragalus adsurgens var. robustior Hook.
   prairie milkvetch
Astragalus agrestis Dougl. ex G. Don
   purple milkvetch
Astragalus allochrous Gray
   halfmoon milkvetch
Astragalus allochrous var. playanus Isely
Astragalus alpinus L.
   alpine milkvetch
Astragalus alpinus var. alpinus L.
   alpine milkvetch
Astragalus amblytropis Barneby
   Challis milkvetch
Astragalus amnis-amissi Barneby ex C.L. Hitchc.
   Custer milkvetch
Astragalus anserinus Atwood, Goodrich & Welsh
   Goose Creek milkvetch
Astragalus aquilonius (Barneby) Barneby
   Lemhi milkvetch
Astragalus argophyllus Nutt.
   silverleaf milkvetch
Astragalus argophyllus var. argophyllus Nutt.
   silverleaf milkvetch
Astragalus argophyllus var. martinii M.E. Jones
   silverleaf milkvetch
Astragalus arrectus Gray
   Palouse milkvetch
Astragalus arthurii M.E. Jones
   waha milkvetch
Astragalus atratus S. Wats.
   mourning milkvetch
Astragalus atratus var. inseptus Barneby
   Fairfield milkvetch
Astragalus atratus var. owyheensis (A. Nels. & J.F. Macbr.) M.E. Jones
   Owyhee milkvetch
Astragalus atropubescens Coult. & Fisher
   hangingpod milkvetch
Astragalus australis (L.) Lam.
   Indian milkvetch
Astragalus beckwithii Torr. & Gray
   Beckwith's milkvetch
Astragalus beckwithii var. beckwithii Torr. & Gray
   Beckwith's milkvetch
Astragalus beckwithii var. sulcatus Barneby
   Beckwith's milkvetch
Astragalus beckwithii var. weiserensis M.E. Jones
   Weiser's milkvetch
Astragalus bisulcatus (Hook.) Gray
   twogrooved milkvetch
Astragalus bisulcatus var. bisulcatus (Hook.) Gray
   twogrooved milkvetch
Astragalus bourgovii Gray
   Bourgov's milkvetch
Astragalus calycosus Torr. ex S. Wats.
   matted poison milkvetch
Astragalus calycosus var. calycosus Torr. ex S. Wats.
   Torrey's milk-vetch
Astragalus camptopus Barneby
   Bruneau milkvetch
Astragalus canadensis L.
   Canadian milkvetch
Astragalus canadensis var. brevidens (Gandog.) Barneby
   shorttooth Canadian milkvetch
Astragalus canadensis var. canadensis L.
   Canadian milkvetch
Astragalus canadensis var. mortonii (Nutt.) S. Wats.
   Morton's Canadian milkvetch
Astragalus caricinus (M.E. Jones) Barneby
   buckwheat milkvetch
Astragalus ceramicus Sheldon
   painted milkvetch
Astragalus ceramicus var. apus Barneby
   painted milkvetch
Astragalus chinensis L. f.
   Chinese milkvetch
Astragalus cibarius Sheldon
   silky milkvetch
Astragalus collinus (Hook.) Dougl. ex G. Don
   hillside milkvetch
Astragalus collinus var. collinus (Hook.) Dougl. ex G. Don
   hillside milkvetch
Astragalus conjunctus S. Wats.
   Idaho milkvetch
Astragalus convallarius Greene
   timber milkvetch
Astragalus convallarius var. convallarius Greene
   timber milkvetch
Astragalus curvicarpus (Heller) J.F. Macbr.
   curvepod milkvetch
Astragalus curvicarpus var. curvicarpus (Heller) J.F. Macbr.
   curvepod milkvetch
Astragalus cusickii Gray
   Cusick's milkvetch
Astragalus cusickii var. cusickii Gray
   Cusick's milkvetch
Astragalus cusickii var. flexilipes Barneby
   canyon milkvetch
Astragalus cusickii var. packardiae Barneby
   Packard's milkvetch
Astragalus cusickii var. sterilis (Barneby) Barneby
   barren milkvetch
Astragalus diversifolius Gray
   meadow milkvetch
Astragalus drummondii Dougl. ex Hook.
   Drummond's milkvetch
Astragalus eremiticus Sheldon
   hermit milkvetch
Astragalus eucosmus B.L. Robins.
   elegant milkvetch
Astragalus filipes Torr. ex Gray
   threadstalk milkvetch
Astragalus geyeri Gray
   Geyer's milkvetch
Astragalus geyeri var. geyeri Gray
   Geyer's milkvetch
Astragalus gilviflorus Sheldon
   plains milkvetch
Astragalus inflexus Dougl. ex Hook.
   bent milkvetch
Astragalus iodanthus S. Wats.
   Humboldt River milkvetch
Astragalus iodanthus var. diaphanoides Barneby
   snake milkvetch
Astragalus iodanthus var. iodanthus S. Wats.
   Humboldt River milkvetch
Astragalus jejunus S. Wats.
   starveling milkvetch
Astragalus kentrophyta Gray
   spiny milkvetch
Astragalus kentrophyta var. jessiae (M.E. Peck) Barneby
   spiny milkvetch
Astragalus kentrophyta var. tegetarius (S. Wats.) Dorn
   mat milkvetch
Astragalus lentiginosus Dougl. ex Hook.
   specklepod milkvetch
Astragalus lentiginosus var. chartaceus M.E. Jones
   broadleaf loco milkvetch
Astragalus lentiginosus var. lentiginosus Dougl. ex Hook.
   speckledpod milkvetch
Astragalus lentiginosus var. salinus (T.J. Howell) Barneby
   salty loco milkvetch
Astragalus leptaleus Gray
   meadow milkvetch
Astragalus lyallii Gray
   Lyall's milkvetch
Astragalus malacus Gray
   shaggy milkvetch
Astragalus microcystis Gray
   dwarf milkvetch
Astragalus miser Dougl.
   weedy milkvetch
Astragalus miser var. crispatus (M.E. Jones) Cronq.
   Lemhi loco milkvetch
Astragalus miser var. hylophilus (Rydb.) Barneby
   woody loco milkvetch
Astragalus miser var. miser Dougl.
   timber milkvetch
Astragalus miser var. oblongifolius (Rydb.) Cronq.
   timber milkvetch
Astragalus miser var. praeteritus Barneby
   Yellowstone loco milkvetch
Astragalus miser var. serotinus (Gray ex Cooper) Barneby
   timber milkvetch
Astragalus miser var. tenuifolius (Nutt.) Barneby
   timber milkvetch
Astragalus mulfordiae M.E. Jones
   Mulford's milkvetch
Astragalus newberryi Gray
   Newberry's milkvetch
Astragalus newberryi var. castoreus M.E. Jones
   Newberry's milkvetch
Astragalus newberryi var. newberryi Gray
   Newberry's milkvetch
Astragalus nudisiliquus A. Nels.
   cobblestone milkvetch
Astragalus obscurus S. Wats.
   arcane milkvetch
Astragalus oniciformis Barneby
   Picabo milkvetch
Astragalus paysonii (Rydb.) Barneby
   Payson's milkvetch
Astragalus platytropis Gray
   broadkeel milkvetch
Astragalus purshii Dougl. ex Hook.
   woollypod milkvetch
Astragalus purshii var. concinnus Barneby
   concinnus milkvetch
Astragalus purshii var. glareosus (Dougl. ex Hook.) Barneby
   gravel milkvetch
Astragalus purshii var. ophiogenes (Barneby) Barneby
   Elmore milkvetch
Astragalus purshii var. purshii Dougl. ex Hook.
   Pursh's milkvetch
Astragalus reventus Gray
   Blue Mountain milkvetch
Astragalus riparius Barneby
   woodyroot milkvetch
Astragalus robbinsii (Oakes) Gray
   Robbins' milkvetch
Astragalus robbinsii var. minor (Hook.) Barneby
   Robbins' milkvetch
Astragalus robbinsii var. occidentalis S. Wats.
   western milkvetch
Astragalus salmonis M.E. Jones
   Trout Creek milkvetch
Astragalus scaphoides (M.E. Jones) Rydb.
   basalt milkvetch
Astragalus sheldonii (Rydb.) Barneby
   Sheldon's milkvetch
Astragalus sinuatus Piper
   Whited's milkvetch
Astragalus spaldingii Gray
   Spalding's milkvetch
Astragalus spatulatus Sheldon
   tufted milkvetch
Astragalus tenellus Pursh
   looseflower milkvetch
Astragalus terminalis S. Wats.
   railhead milkvetch
Astragalus tetrapterus Gray
   fourwing milkvetch
Astragalus toanus M.E. Jones
   Toano milkvetch
Astragalus utahensis (Torr.) Torr. & Gray
   Utah milkvetch
Astragalus vallaris M.E. Jones
   canyon milkvetch
Astragalus vexilliflexus Sheldon
   bentflower milkvetch
Astragalus vexilliflexus var. nubilus Barneby
   salmon milkvetch
Astragalus whitneyi Gray
   balloon pod milkvetch
Astragalus whitneyi var. confusus Barneby
   conelike milkvetch
Astragalus whitneyi var. sonneanus (Greene) Jepson
   balloon pod milkvetch
Astragalus yoder-williamsii Barneby
   Osgood Mountain milkvetch
Coronilla varia L.
   purple crownvetch
Cytisus scoparius (L.) Link
   scotchbroom
Cytisus scoparius var. scoparius (L.) Link
   scotchbroom
Dalea ornata (Dougl. ex Hook.) Eat. & J. Wright
   Blue Mountain prairieclover
Glycyrrhiza lepidota Pursh
   American licorice
Hedysarum boreale Nutt.
   northern sweetvetch
Hedysarum boreale ssp. boreale Nutt.
   boreal sweetvetch
Hedysarum boreale ssp. boreale var. boreale Nutt.
   boreal sweetvetch
Hedysarum occidentale Greene
   western sweetvetch
Hedysarum sulphurescens Rydb.
   white sweetvetch
Lathyrus bijugatus White
   drypark peavine
Lathyrus lanszwertii Kellogg
   thickleaf peavine
Lathyrus lanszwertii var. aridus (Piper) Jepson
   Nevada peavine
Lathyrus lanszwertii var. lanszwertii Kellogg
   Lanszwert's peavine
Lathyrus nevadensis S. Wats.
   Sierran peavine
Lathyrus nevadensis ssp. cusickii (S. Wats.) C.L. Hitchc.
   Cusick's peavine
Lathyrus nevadensis ssp. lanceolatus (T.J. Howell) C.L. Hitchc.
   Sierran peavine
Lathyrus nevadensis ssp. lanceolatus var. nuttallii (S. Wats.) C.L. Hitchc.
   Nuttall's peavine
Lathyrus nevadensis ssp. lanceolatus var. parkeri (St. John) C.L. Hitchc.
   Parker's peavine
Lathyrus nevadensis ssp. lanceolatus var. pilosellus (M.E. Peck) C.L. Hitchc.
   Sierran peavine
Lathyrus nevadensis ssp. nevadensis S. Wats.
   Nevada peavine
Lathyrus ochroleucus Hook.
   cream peavine
Lathyrus palustris L.
   slenderstem peavine
Lathyrus pauciflorus Fern.
   fewflower peavine
Lathyrus pauciflorus var. pauciflorus Fern.
   fewflower peavine
Lathyrus pauciflorus var. utahensis (M.E. Jones) Piper ex M.E. Peck
   Utah peavine
Lathyrus rigidus White
   stiff peavine
Lathyrus sulphureus Brewer ex Gray
   snub peavine
Lathyrus sulphureus var. sulphureus Brewer ex Gray
   snub peavine
Lathyrus sylvestris L.
   flat peavine
Lotus corniculatus L.
   birdfoot deervetch
Lotus denticulatus (E. Drew) Greene
   riverbar birdsfoot trefoil
Lotus nevadensis (S. Wats.) Greene
   Nevada birdsfoot trefoil
Lotus nevadensis var. douglasii (Greene) Ottley
   Douglas' birdsfoot trefoil
Lotus pinnatus Hook.
   meadow birdsfoot trefoil
Lotus tenuis Waldst. & Kit. ex Willd.
   narrowleaf birdsfoot trefoil
Lotus unifoliolatus (Hook.) Benth.
   American birdsfoot trefoil
Lotus unifoliolatus var. unifoliolatus (Hook.) Benth.
   prairie trefoil
Lupinus X alpestris A. Nels. (pro sp.)
   lupine
Lupinus arbustus Dougl. ex Lindl.
   longspur lupine
Lupinus arbustus ssp. arbustus Dougl. ex Lindl.
   longspur lupine
Lupinus arbustus ssp. arbustus var. montanus (T.J. Howell) D. Dunn
   longspur lupine
Lupinus arbustus ssp. calcaratus (Kellogg) D. Dunn
   quakerbonnet lupine
Lupinus arbustus ssp. neolaxiflorus D. Dunn
   longspur lupine
Lupinus arbustus ssp. pseudoparviflorus (Rydb.) D. Dunn
   false lupine
Lupinus argenteus Pursh
   silvery lupine
Lupinus argenteus ssp. argenteus Pursh
   silvery lupine
Lupinus argenteus ssp. argenteus var. argenteus Pursh
   silvery lupine
Lupinus argenteus ssp. argenteus var. laxiflorus (Dougl. ex Lindl.) Dorn
   spur lupine
Lupinus argenteus ssp. rubricaulis (Greene) Hess & D. Dunn
   silvery lupine
Lupinus argenteus ssp. spathulatus (Rydb.) Hess & D. Dunn
   silvery lupine
Lupinus aridus Dougl.
   desert lupine
Lupinus aridus ssp. aridus Dougl.
   desert lupine
Lupinus burkei S. Wats.
   largeleaf lupine
Lupinus burkei ssp. burkei S. Wats.
   Burke's lupine
Lupinus caespitosus Nutt.
   stemless dwarf lupine
Lupinus caespitosus var. utahensis (S. Wats.) Cox
   Utah lupine
Lupinus caudatus Kellogg
   tailcup lupine
Lupinus caudatus ssp. caudatus Kellogg
   tailcup lupine
Lupinus cusickii S. Wats.
   Cusick's lupine
Lupinus cusickii ssp. cusickii S. Wats.
   Cusick's lupine
Lupinus depressus Rydb.
   depressed lupine
Lupinus evermannii Rydb.
   Evermann's lupine
Lupinus holosericeus Nutt.
   holo lupine
Lupinus leucophyllus Dougl. ex Lindl.
   velvet lupine
Lupinus leucophyllus ssp. erectus (Henderson) Harmon
   velvet lupine
Lupinus leucophyllus ssp. leucophyllus Dougl. ex Lindl.
   velvet lupine
Lupinus leucophyllus ssp. leucophyllus var. belliae C.P. Sm.
   velvet lupine
Lupinus leucophyllus ssp. leucophyllus var. leucophyllus Dougl. ex Lindl.
   velvet lupine
Lupinus lyallii Gray
   dwarf mountain lupine
Lupinus lyallii ssp. alcis-temporis (C.P. Sm.) Cox
   dwarf mountain lupine
Lupinus minimus Dougl. ex Hook.
   Kettle Falls lupine
Lupinus ornatus Dougl. ex Lindl.
   ornate lupine
Lupinus parviflorus Nutt. ex Hook. & Arn.
   lodgepole lupine
Lupinus parviflorus ssp. parviflorus Nutt. ex Hook. & Arn.
   lodgepole lupine
Lupinus prunophilus M.E. Jones
   hairy bigleaf lupine
Lupinus pusillus Pursh
   rusty lupine
Lupinus pusillus ssp. intermontanus (Heller) D. Dunn
   Intermountain lupine
Lupinus pusillus ssp. pusillus Pursh
   rusty lupine
Lupinus saxosus T.J. Howell
   rock lupine
Lupinus sellulus Kellogg
   Donner Lake lupine
Lupinus sellulus ssp. sellulus Kellogg
   Donner Lake lupine
Lupinus sellulus ssp. sellulus var. lobbii (Gray ex S. Wats.) Cox
   Lobb's lupine
Lupinus sellulus ssp. sellulus var. medius (Detling) Cox
   Donner Lake lupine
Lupinus sellulus ssp. sellulus var. sellulus Kellogg
   Donner Lake lupine
Lupinus sericeus Pursh
   silky lupine
Lupinus sericeus ssp. sericeus Pursh
   silky lupine
Lupinus sericeus ssp. sericeus var. maximus C.P. Sm. ex Fleak & D. Dunn
   silky lupine
Lupinus sericeus ssp. sericeus var. sericeus Pursh
   silky lupine
Lupinus sulphureus Dougl. ex Hook.
   sulphur lupine
Lupinus uncialis S. Wats.
   inchhigh lupine
Lupinus wyethii S. Wats.
   Wyeth's lupine
Lupinus wyethii ssp. wyethii S. Wats.
   Wyeth's lupine
Medicago lupulina L.
   black medick
Medicago polymorpha L.
   burclover
Medicago sativa L.
   alfalfa
Medicago sativa ssp. sativa L.
   alfalfa
Melilotus albus Medik.
   = Melilotus officinalis
Melilotus indicus (L.) All.
   annual yellow sweetclover
Melilotus officinalis (L.) Lam.
   yellow sweetclover
Onobrychis viciifolia Scop.
   sainfoin
Oxytropis borealis DC.
Oxytropis borealis var. viscida (Nutt.) Welsh
Oxytropis campestris (L.) DC.
   cold mountain crazyweed
Oxytropis campestris var. cusickii (Greenm.) Barneby
   Cusick's crazyweed
Oxytropis deflexa (Pallas) DC.
   hangpod crazyweed
Oxytropis deflexa var. deflexa (Pallas) DC.
   pendantpod locoweed
Oxytropis deflexa var. foliolosa (Hook.) Barneby
   pendantpod locoweed
Oxytropis deflexa var. sericea Torr. & Gray
   longstem hangpod crazyweed
Oxytropis lagopus Nutt.
   haresfoot pointloco
Oxytropis lagopus var. lagopus Nutt.
   haresfoot locoweed
Oxytropis monticola Gray
   yellowflower locoweed
Oxytropis nana Nutt.
   Wyoming locoweed
Oxytropis nana var. argophylla (Rydb.) Isely
   Montana crazyweed
Oxytropis nana var. besseyi (Rydb.) Isely
   Bessey's pointvetch
Oxytropis nana var. salmonensis (Barneby) Isely
   Salmon River crazyweed
Oxytropis parryi Gray
   Parry's crazyweed
Oxytropis riparia Litv.
   Ruby Valley pointvetch
Oxytropis sericea Nutt.
   silvery oxytrope
Oxytropis sericea var. spicata (Hook.) Barneby
   Rocky Mountain locoweed
Peteria thompsoniae S. Wats.
   Thompson's peteria
Psoralea 
   = Psoralidium 
Psoralidium lanceolatum (Pursh) Rydb.
   lemon scurfpea
Rupertia physodes (Dougl. ex Hook.) J. Grimes
   forest scurfpea
Sphaerophysa salsula (Pallas) DC.
   alkali swainsonpea
Thermopsis gracilis T.J. Howell
Thermopsis gracilis var. gracilis T.J. Howell
Thermopsis gracilis var. ovata (B.L. Robins. ex Piper) M. Mendenhall
Thermopsis macrophylla Hook. & Arn.
   California goldenbanner
Thermopsis montana var. ovata (B.L. Robins. ex Piper) St. John
   = Thermopsis gracilis var. ovata
Thermopsis rhombifolia (Nutt. ex Pursh) Nutt. ex Richards.
   prairie thermopsis
Thermopsis rhombifolia var. montana (Nutt.) Isely
   mountain thermopsis
Trifolium andersonii Gray
   fiveleaf clover
Trifolium arvense L.
   rabbitfoot clover
Trifolium aureum Pollich
   golden clover
Trifolium beckwithii Brewer ex S. Wats.
   Beckwith's clover
Trifolium campestre Schreb.
   field clover
Trifolium cyathiferum Lindl.
   cup clover
Trifolium douglasii House
   Douglas' clover
Trifolium dubium Sibthorp
   suckling clover
Trifolium eriocephalum Nutt.
   woollyhead clover
Trifolium eriocephalum ssp. arcuatum (Piper) J. Gillett
   woollyhead clover
Trifolium eriocephalum ssp. cusickii (Piper) J. Gillett
   Cusick's clover
Trifolium eriocephalum ssp. villiferum (House) J. Gillett
   fuzzyleaf clover
Trifolium fragiferum L.
   strawberry clover
Trifolium gymnocarpon Nutt.
   hollyleaf clover
Trifolium gymnocarpon ssp. gymnocarpon Nutt.
   hollyleaf clover
Trifolium gymnocarpon ssp. plummerae (S. Wats.) J. Gillett
   Plummer's clover
Trifolium haydenii Porter
   Hayden's clover
Trifolium haydenii var. haydenii Porter
   Hayden's clover
Trifolium hybridum L.
   alsike clover
Trifolium incarnatum L.
   crimson clover
Trifolium kingii S. Wats.
   King's clover
Trifolium kingii ssp. macilentum (Greene) J. Gillett
   King's clover
Trifolium latifolium (Hook.) Greene
   twin clover
Trifolium longipes Nutt.
   longstalk clover
Trifolium longipes ssp. multipedunculatum (Kennedy) J. Gillett
   longstalk clover
Trifolium longipes ssp. oreganum (T.J. Howell) J. Gillett
   Oregon clover
Trifolium longipes ssp. pedunculatum (Rydb.) J. Gillett
   longstalk clover
Trifolium longipes ssp. reflexum (A. Nels.) J. Gillett
   droopflower clover
Trifolium macrocephalum (Pursh) Poir.
   largehead clover
Trifolium microcephalum Pursh
   smallhead clover
Trifolium microdon Hook. & Arn.
   thimble clover
Trifolium owyheense Gilkey
   Owyhee clover
Trifolium parryi Gray
   Parry's clover
Trifolium parryi ssp. montanense (Rydb.) J. Gillett
   Parry's clover
Trifolium plumosum Dougl. ex Hook.
   plumed clover
Trifolium plumosum ssp. amplifolium (J.S. Martin) J. Gillett
   bigleaf clover
Trifolium plumosum ssp. plumosum Dougl. ex Hook.
   plumed clover
Trifolium pratense L.
   red clover
Trifolium repens L.
   white clover
Trifolium variegatum Nutt.
   whitetip clover
Trifolium wormskioldii Lehm.
   cows clover
Vicia americana Muhl. ex Willd.
   American vetch
Vicia americana ssp. americana Muhl. ex Willd.
   American vetch
Vicia americana ssp. minor (Hook.) C.R. Gunn
   mat vetch
Vicia cracca L.
   bird vetch
Vicia sativa L.
   common vetch
Vicia sativa ssp. nigra (L.) Ehrh.
   common vetch
Vicia sativa ssp. sativa L.
   garden vetch
Vicia tetrasperma (L.) Schreb.
   lentil vetch
Vicia villosa Roth
   winter vetch

LEMNACEAE
Lemna minor L.
   common duckweed
Lemna trisulca L.
   star duckweed
Lemna turionifera Landolt
   turion duckweed
Lemna valdiviana Phil.
   valdivia duckweed
Spirodela polyrrhiza (L.) Schleid.
   common duckweed
Wolffia borealis (Engelm. ex Hegelm.) Landolt ex Landolt & Wildi
   northern watermeal

LENTIBULARIACEAE
Pinguicula macroceras Link
   California butterwort
Utricularia intermedia Hayne
   flatleaf bladderwort
Utricularia macrorhiza Le Conte
   common bladderwort
Utricularia minor L.
   lesser bladderwort

LILIACEAE
Allium aaseae Ownbey
   South Idaho onion
Allium acuminatum Hook.
   tapertip onion
Allium anceps Kellogg
   twinleaf onion
Allium bisceptrum S. Wats.
   twincrest onion
Allium bisceptrum var. bisceptrum S. Wats.
   twincrest onion
Allium brandegei S. Wats.
   Brandegee's onion
Allium brevistylum S. Wats.
   shortstyle onion
Allium cernuum Roth
   nodding onion
Allium columbianum (Ownbey & Mingrone) P. Peterson, Annable & Rieseberg
   Columbian onion
Allium douglasii Hook.
   Douglas' onion
Allium fibrillum M.E. Jones
   Blue Mountain onion
Allium geyeri S. Wats.
   Geyer's onion
Allium geyeri var. geyeri S. Wats.
   Geyer's onion
Allium geyeri var. tenerum M.E. Jones
   bulbil onion
Allium lemmonii S. Wats.
   Lemmon's onion
Allium madidum S. Wats.
   swamp onion
Allium nevadense S. Wats.
   Nevada onion
Allium nevadense var. nevadense S. Wats.
   Nevada onion
Allium parvum Kellogg
   small onion
Allium schoenoprasum L.
   wild chives
Allium schoenoprasum var. schoenoprasum L.
   wild chives
Allium simillimum Henderson
   simil onion
Allium textile A. Nels. & J.F. Macbr.
   textile onion
Allium tolmiei (Hook.) Baker ex S. Wats.
   Tolm's onion
Allium tolmiei var. persimile Ownbey
   sevendevils onion
Allium tolmiei var. platyphyllum (Tidestrom) Ownbey
   Wallowa onion
Allium tolmiei var. tolmiei (Hook.) Baker ex S. Wats.
   Tolm's onion
Allium validum S. Wats.
   Pacific onion
Asparagus officinalis L.
   garden asparagus
Calochortus apiculatus Baker
   pointedtip Mariposa lily
Calochortus bruneaunis A. Nels. & J.F. Macbr.
   Bruneau Mariposa lily
Calochortus elegans Pursh
   northwestern Mariposa lily
Calochortus elegans var. elegans Pursh
   elegant Mariposa lily
Calochortus elegans var. selwayensis (St. John) Ownbey
   Selway Mariposa lily
Calochortus eurycarpus S. Wats.
   white Mariposa lily
Calochortus macrocarpus Dougl.
   sagebrush Mariposa lily
Calochortus macrocarpus var. macrocarpus Dougl.
   sagebrush Mariposa lily
Calochortus macrocarpus var. maculosus (A. Nels. & J.F. Macbr.) A. Nels. & J.F. Macbr.
   Nez Perce Mariposa lily
Calochortus nitidus Dougl.
   broadfruit Mariposa lily
Calochortus nuttallii Torr. & Gray
   sego lily
Camassia cusickii S. Wats.
   Cusick's camas
Camassia quamash (Pursh) Greene
   small camas
Camassia quamash ssp. quamash (Pursh) Greene
   small camas
Camassia quamash ssp. utahensis Gould
   Utah small camas
Clintonia uniflora (Menzies ex J.A. & J.H. Schultes) Kunth
   bride's bonnet
Disporum hookeri (Torr.) Nichols.
   drops of gold
Disporum hookeri var. oreganum (S. Wats.) Q. Jones
   Oregon drops of gold
Disporum trachycarpum (S. Wats.) Benth. & Hook. f.
   roughfruit fairybells
Erythronium grandiflorum Pursh
   dogtooth lily
Erythronium grandiflorum ssp. candidum Piper
   yellow avalanchelily
Erythronium grandiflorum ssp. chrysandrum Applegate
   yellow avalanchelily
Erythronium grandiflorum ssp. grandiflorum Pursh
   yellow avalanchelily
Erythronium grandiflorum ssp. nudipetalum Applegate
   yellow avalanchelily
Fritillaria affinis (Schultes) Sealy
Fritillaria affinis var. affinis (Schultes) Sealy
Fritillaria atropurpurea Nutt.
   spotted missionbells
Fritillaria pudica (Pursh) Spreng.
   yellow missionbells
Leucocrinum montanum Nutt. ex Gray
   common starlily
Lilium columbianum hort. ex Baker
   Columbian lily
Lloydia serotina (L.) Reichenb.
   common alplily
Maianthemum dilatatum (Wood) A. Nels. & J.F. Macbr.
   twoleaf false Solomon's seal
Maianthemum racemosum (L.) Link
   feathery false Solomon's seal
Maianthemum racemosum ssp. racemosum (L.) Link
   feather Solomon's seal
Maianthemum stellatum (L.) Link
   starry false Solomon's seal
Smilacina racemosa 
   = Maianthemum racemosum 
Smilacina stellata (L.) Desf.
   = Maianthemum stellatum
Stenanthium occidentale Gray
   western stenanthium
Streptopus amplexifolius (L.) DC.
   claspleaf twistedstalk
Streptopus amplexifolius var. amplexifolius (L.) DC.
   American twistedstalk
Streptopus amplexifolius var. chalazatus Fassett
   tubercle twistedstalk
Streptopus streptopoides (Ledeb.) Frye & Rigg
   northern twistedstalk
Streptopus streptopoides ssp. streptopoides (Ledeb.) Frye & Rigg
   small twistedstalk
Streptopus streptopoides ssp. streptopoides var. brevipes (Baker) Fassett
   small twistedstalk
Tofieldia glutinosa (Michx.) Pers.
   glutin tofieldia
Tofieldia glutinosa ssp. absona C.L. Hitchc.
   Priest Lake tofieldia
Tofieldia glutinosa ssp. brevistyla C.L. Hitchc.
   sticky tofieldia
Tofieldia glutinosa ssp. montana C.L. Hitchc.
   tal tofieldia
Trillium ovatum Pursh
   Pacific trillium
Trillium ovatum ssp. ovatum Pursh
   Pacific trillium
Trillium petiolatum Pursh
   Idaho trillium
Triteleia grandiflora Lindl.
   wild hyacinth
Triteleia hyacinthina (Lindl.) Greene
   hyacinth brodiaea
Triteleia hyacinthina var. hyacinthina (Lindl.) Greene
   fool's onion
Uvularia amplexifolia L.
   = Streptopus amplexifolius var. amplexifolius
Veratrum californicum Dur.
   California false hellebore
Veratrum californicum var. californicum Dur.
   California false hellebore
Veratrum californicum var. caudatum (Heller) C.L. Hitchc.
   cascade false hellebore
Veratrum viride Ait.
   American false hellebore
Xerophyllum tenax (Pursh) Nutt.
   common beargrass
Zigadenus elegans Pursh
   mountain deathcamas
Zigadenus paniculatus (Nutt.) S. Wats.
   foothill deathcamas
Zigadenus venenosus S. Wats.
   meadow deathcamas
Zigadenus venenosus var. gramineus (Rydb.) Walsh ex M.E. Peck
   grassy deathcamas
Zigadenus venenosus var. venenosus S. Wats.
   meadow deathcamas

LIMNANTHACEAE
Floerkea proserpinacoides Willd.
   false mermaidweed

LINACEAE
Linum kingii S. Wats.
   King's flax
Linum lewisii Pursh
   prairie flax
Linum usitatissimum L.
   common flax
Sclerolinon digynum (Gray) Rogers
   digynum flax

LOASACEAE
Mentzelia albicaulis (Dougl. ex Hook.) Dougl. ex Torr. & Gray
   whitestem blazingstar
Mentzelia albicaulis var. albicaulis (Dougl. ex Hook.) Dougl. ex Torr. & Gray
   whitestem blazingstar
Mentzelia congesta Nutt. ex Torr. & Gray
   united blazingstar
Mentzelia congesta var. congesta Nutt. ex Torr. & Gray
   ventana blazingstar
Mentzelia decapetala (Pursh ex Sims) Urban & Gilg ex Gilg
   tenpetal blazingstar
Mentzelia dispersa S. Wats.
   bushy blazingstar
Mentzelia dispersa var. compacta (A. Nels.) J.F. Macbr.
   Nevada blazingstar
Mentzelia dispersa var. dispersa S. Wats.
   bushy blazingstar
Mentzelia dispersa var. latifolia (Rydb.) J.F. Macbr.
   bushy blazingstar
Mentzelia laevicaulis (Dougl. ex Hook.) Torr. & Gray
   smoothstem blazingstar
Mentzelia laevicaulis var. laevicaulis (Dougl. ex Hook.) Torr. & Gray
   smoothstem blazingstar
Mentzelia mollis M.E. Peck
   soft blazingstar
Mentzelia torreyi Gray
   Torrey's blazingstar
Mentzelia torreyi var. acerosa (M.E. Jones) Barneby
   Torrey's blazingstar
Mentzelia torreyi var. torreyi Gray
   Torrey's blazingstar
Mentzelia veatchiana Kellogg
   whitestem blazingstar

LYCOPODIACEAE
Huperzia selago (L.) Bernh. ex Mart. & Schrank
   fir clubmoss
Huperzia selago var. densa Trevisan
   fir clubmoss
Huperzia selago var. selago (L.) Bernh. ex Mart. & Schrank
   fir clubmoss
Lycopodiella inundata (L.) Holub
   inundated clubmoss
Lycopodium X zeilleri (Rouy) Greuter & Burdet
   Zeiller's clubmoss
Lycopodium alpinum L.
   alpine clubmoss
Lycopodium annotinum L.
   stiff clubmoss
Lycopodium annotinum var. annotinum L.
   stiff clubmoss
Lycopodium clavatum L.
   running clubmoss
Lycopodium clavatum var. clavatum L.
   running clubmoss
Lycopodium complanatum L.
   groundcedar
Lycopodium dendroideum Michx.
   tree groundpine
Lycopodium obscurum L.
   rare clubmoss
Lycopodium sitchense Rupr.
   Sitka clubmoss

LYTHRACEAE
Ammannia coccinea Rottb.
   valley redstem
Lythrum salicaria L.
   purple loosestrife
Rotala ramosior (L.) Koehne
   lowland rotala

MALVACEAE
Hibiscus trionum L.
   flower of an hour
Iliamna rivularis (Dougl. ex Hook.) Greene
   streambank globemallow
Iliamna rivularis var. diversa (A. Nels.) Wiggins
   streambank wildhollyhock
Iliamna rivularis var. rivularis (Dougl. ex Hook.) Greene
   streambank wildhollyhock
Malva moschata L.
   musk mallow
Malva neglecta Wallr.
   common mallow
Malva sylvestris L.
   high mallow
Malvella leprosa (Ortega) Krapov.
   alkali mallow
Sida hederacea (Dougl. ex Hook.) Torr. ex Gray
   = Malvella leprosa
Sidalcea neomexicana Gray
   New Mexico checkermallow
Sidalcea neomexicana ssp. crenulata (A. Nels.) C.L. Hitchc.
   New Mexico checkermallow
Sidalcea neomexicana ssp. neomexicana Gray
   New Mexico checkermallow
Sidalcea oregana (Nutt. ex Torr. & Gray) Gray
   Oregon checkermallow
Sidalcea oregana ssp. oregana (Nutt. ex Torr. & Gray) Gray
   Oregon checkermallow
Sidalcea oregana ssp. oregana var. maxima (M.E. Peck) C.L. Hitchc.
   Oregon checkermallow
Sidalcea oregana ssp. oregana var. nevadensis C.L. Hitchc.
   Nevada checkermallow
Sidalcea oregana ssp. oregana var. oregana (Nutt. ex Torr. & Gray) Gray
   Oregon checkermallow
Sidalcea oregana ssp. oregana var. procera C.L. Hitchc.
   Oregon checkermallow
Sphaeralcea coccinea (Nutt.) Rydb.
   scarlet globemallow
Sphaeralcea coccinea ssp. coccinea (Nutt.) Rydb.
   scarlet globemallow
Sphaeralcea grossulariifolia (Hook. & Arn.) Rydb.
   gooseberryleaf globemallow
Sphaeralcea grossulariifolia ssp. grossulariifolia (Hook. & Arn.) Rydb.
   gooseberryleaf globemallow
Sphaeralcea munroana (Dougl. ex Lindl.) Spach ex Gray
   Munro's globemallow
Sphaeralcea munroana ssp. munroana (Dougl. ex Lindl.) Spach ex Gray
   Munro's globemallow
Sphaeralcea munroana ssp. subrhomboidea (Rydb.) Kearney
   whitestem globemallow

MARSILEACEAE
Marsilea oligospora Goodding
   Pacific waterclover
Marsilea vestita Hook. & Grev.
   hairy pepperwort

MENYANTHACEAE
Menyanthes trifoliata L.
   common buckbean

MOLLUGINACEAE
Mollugo verticillata L.
   green carpetweed

MORACEAE
Morus alba L.
   white mulberry

NAJADACEAE
Najas flexilis (Willd.) Rostk. & Schmidt
   nodding waternymph

NYCTAGINACEAE
Abronia mellifera Dougl. ex Hook.
   white sand verbena
Mirabilis macfarlanei Constance & Rollins
   MacFarlane's four o'clock
Mirabilis nyctaginea (Michx.) MacM.
   heartleaf four o'clock

NYMPHAEACEAE
Nuphar lutea (L.) Sm.
   yellow pondlily
Nuphar lutea ssp. polysepala (Engelm.) E.O. Beal
   Rocky Mountain pondlily
Nuphar lutea ssp. variegata (Dur.) E.O. Beal
   varigated yellow pondlily
Nuphar polysepala Engelm.
   = Nuphar lutea ssp. polysepala
Nymphaea tetragona Georgi
   pygmy waterlily

ONAGRACEAE
Camissonia andina (Nutt.) Raven
   sundrops eveningprimrose
Camissonia boothii (Dougl. ex Lehm.) Raven
   Booth's eveningprimrose
Camissonia boothii ssp. alyssoides (Hook. & Arn.) Raven
   alyssum eveningprimrose
Camissonia boothii ssp. boothii (Dougl. ex Lehm.) Raven
   Booth's suncup
Camissonia breviflora (Torr. & Gray) Raven
   fewflower eveningprimrose
Camissonia claviformis (Torr. & Frem.) Raven
   browneyes
Camissonia claviformis ssp. cruciformis (Kellogg) Raven
   browneyes
Camissonia claviformis ssp. integrior (Raven) Raven
   browneyes
Camissonia contorta (Dougl. ex Lehm.) Kearney
   plains eveningprimrose
Camissonia minor (A. Nels.) Raven
   small eveningprimrose
Camissonia palmeri (S. Wats.) Raven
   Palmer eveningprimrose
Camissonia parvula (Nutt. ex Torr. & Gray) Raven
   Lewis River suncup
Camissonia pterosperma (S. Wats.) Raven
   wingfruit suncup
Camissonia pusilla Raven
   little wiry suncup
Camissonia pygmaea (Dougl. ex Lehm.) Raven
   dwarf suncup
Camissonia scapoidea (Nutt. ex Torr. & Gray) Raven
   barestem eveningprimrose
Camissonia scapoidea ssp. brachycarpa (Raven) Raven
   Paiute suncup
Camissonia scapoidea ssp. scapoidea (Nutt. ex Torr. & Gray) Raven
   Seorsa eveningprimrose
Camissonia subacaulis (Pursh) Raven
   diffuseflower eveningprimrose
Camissonia tanacetifolia (Torr. & Gray) Raven
   tansyleaf eveningprimrose
Camissonia tanacetifolia ssp. tanacetifolia (Torr. & Gray) Raven
   tansyleaf eveningprimrose
Circaea alpina L.
   small enchanter's nightshade
Circaea alpina ssp. alpina L.
   small enchanter's nightshade
Circaea alpina ssp. pacifica (Aschers. & Magnus) Raven
   small enchanter's nightshade
Clarkia pulchella Pursh
   pinkfairies
Clarkia rhomboidea Dougl. ex Hook.
   diamond fairyfan
Epilobium anagallidifolium Lam.
   alpine willowherb
Epilobium angustifolium L.
   fireweed
Epilobium brachycarpum K. Presl
   autumn willowweed
Epilobium canum (Greene) Raven
   hummingbird trumpet
Epilobium canum ssp. garrettii (A. Nels.) Raven
   Garrett's firechalice
Epilobium ciliatum Raf.
   hairy willowherb
Epilobium ciliatum ssp. ciliatum Raf.
   coast willowweed
Epilobium ciliatum ssp. glandulosum (Lehm.) Hoch & Raven
   glandular willowweed
Epilobium clavatum Trel.
   clubfruit willowherb
Epilobium densiflorum (Lindl.) Hoch & Raven
Epilobium foliosum (Torr. & Gray) Suksdorf
   California willowherb
Epilobium glaberrimum Barbey
   smooth willowweed
Epilobium glaberrimum ssp. fastigiatum (Nutt.) Hoch & Raven
   smooth willowweed
Epilobium glaberrimum ssp. glaberrimum Barbey
   smooth willowweed
Epilobium halleanum Hausskn.
   glandular willowherb
Epilobium hornemannii Reichenb.
   Hornemann's willowherb
Epilobium hornemannii ssp. hornemannii Reichenb.
   Hornemann's willowherb
Epilobium lactiflorum Hausskn.
   milkflower willowweed
Epilobium latifolium L.
   dwarf fireweed
Epilobium leptocarpum Hausskn.
   slenderfruit willowherb
Epilobium minutum Lindl. ex Lehm.
   small willowweed
Epilobium obcordatum Gray
   heart willowweed
Epilobium oreganum Greene
   Grants Pass willowherb
Epilobium oregonense Hausskn.
   slimstem willowweed
Epilobium pallidum (Eastw.) Hoch & Raven
Epilobium palustre L.
   marsh willowherb
Epilobium pygmaeum (Speg.) Hoch & Raven
Epilobium saximontanum Hausskn.
   Rocky Mountain willowherb
Epilobium strictum Muhl. ex Spreng.
   downy willowherb
Epilobium suffruticosum Nutt.
   shrub willowherb
Epilobium torreyi (S. Wats.) Hoch & Raven
Gaura coccinea Nutt. ex Pursh
   scarlet beeblossom
Gaura parviflora Dougl. ex Lehm.
   velvetweed
Gayophytum decipiens Lewis & Szweykowski
   deceptive groundsmoke
Gayophytum diffusum Torr. & Gray
   spreading groundsmoke
Gayophytum diffusum ssp. diffusum Torr. & Gray
   spreading groundsmoke
Gayophytum diffusum ssp. parviflorum Lewis & Szweykowski
   spreading groundsmoke
Gayophytum heterozygum Lewis & Szweykowski
   zigzag groundsmoke
Gayophytum racemosum Torr. & Gray
   blackfoot groundsmoke
Gayophytum ramosissimum Torr. & Gray
   pinyon groundsmoke
Ludwigia palustris (L.) Ell.
   marsh seedbox
Ludwigia polycarpa Short & Peter
   manyfruit primrosewillow
Oenothera brachycarpa Gray
   shortfruit eveningprimrose
Oenothera cespitosa Nutt.
   tufted eveningprimrose
Oenothera cespitosa ssp. cespitosa Nutt.
   tufted eveningprimrose
Oenothera cespitosa ssp. marginata (Nutt. ex Hook. & Arn.) Munz
   tufted eveningprimrose
Oenothera elata Kunth
   Hooker's eveningprimrose
Oenothera elata ssp. hirsutissima (Gray ex S. Wats.) W. Dietr.
   Hooker's eveningprimrose
Oenothera flava (A. Nels.) Garrett
   yellow eveningprimrose
Oenothera pallida Lindl.
   pale eveningprimrose
Oenothera pallida ssp. pallida Lindl.
   pale eveningprimrose
Oenothera psammophila (A. Nels. & J.F. Macbr.) W.L. Wagner, Stockhouse & Klein
   St. Anthony Dunes eveningprimrose
Oenothera villosa Thunb.
   hairy eveningprimrose
Oenothera villosa ssp. strigosa (Rydb.) W. Dietr. & Raven
   hairy eveningprimrose

OPHIOGLOSSACEAE
Botrychium ascendens W.H. Wagner
   trianglelobe moonwort
Botrychium crenulatum W.H. Wagner
   scalloped moonwort
Botrychium lunaria (L.) Sw.
   common moonwort
Botrychium matricariifolium (A. Braun ex Dowell) A. Braun ex Koch
   matricary grapefern
Botrychium minganense Victorin
   Mingan moonwort
Botrychium multifidum (Gmel.) Trev.
   leathery grapefern
Botrychium simplex E. Hitchc.
   little grapefern
Botrychium virginianum (L.) Sw.
   rattlesnake fern

ORCHIDACEAE
Amerorchis rotundifolia (Banks ex Pursh) Hulten
   roundleaf orchid
Calypso bulbosa (L.) Oakes
   fairyslipper orchid
Calypso bulbosa var. occidentalis (Holz.) Boivin
   fairyslipper orchid
Cephalanthera austiniae (Gray) Heller
   phantom orchid
Corallorrhiza maculata (Raf.) Raf.
   summer coralroot
Corallorrhiza mertensiana Bong.
   Pacific coralroot
Corallorrhiza striata Lindl.
   hooded coralroot
Corallorrhiza striata var. striata Lindl.
   hooded coralroot
Corallorrhiza trifida Chatelain
   yellow coralroot
Corallorrhiza wisteriana Conrad
   spring coralroot
Cypripedium calceolus ssp. parviflorum (Salisb.) Hulten
   = Cypripedium parviflorum
Cypripedium fasciculatum Kellogg ex S. Wats.
   clustered lady's slipper
Cypripedium montanum Dougl. ex Lindl.
   mountain lady's slipper
Cypripedium parviflorum Salisb.
   lesser yellow lady's slipper
Epipactis gigantea Dougl. ex Hook.
   giant helleborine
Goodyera oblongifolia Raf.
   western rattlesnake plantain
Goodyera repens (L.) R. Br. ex Ait. f.
   lesser rattlesnake plantain
Habenaria 
   = Platanthera 
Habenaria unalascensis (Spreng.) S. Wats.
   = Piperia unalascensis
Limnorchis 
   = Platanthera 
Listera borealis Morong
   northern twayblade
Listera caurina Piper
   northwestern twayblade
Listera convallarioides (Sw.) Nutt. ex Ell.
   broadlipped twayblade
Listera cordata (L.) R. Br. ex Ait. f.
   heartleaf twayblade
Piperia elegans (Lindl.) Rydb.
   hillside bogorchid
Piperia elongata Rydb.
   denseflower rein orchid
Piperia elongata ssp. elongata Rydb.
   denseflower rein orchid
Piperia unalascensis (Spreng.) Rydb.
   Alaska rein orchid
Platanthera dilatata (Pursh) Lindl. ex Beck
   boreal bog orchid
Platanthera dilatata var. albiflora (Cham.) Ledeb.
   scentbottle
Platanthera dilatata var. dilatata (Pursh) Lindl. ex Beck
   scentbottle
Platanthera hyperborea (L.) Lindl.
   northern green orchid
Platanthera hyperborea var. gracilis (Lindl.) Luer
   northern green orchid
Platanthera hyperborea var. hyperborea (L.) Lindl.
   northern green orchid
Platanthera leucostachys Lindl.
   bog orchid
Platanthera obtusata (Banks ex Pursh) Lindl.
   blunt bog orchid
Platanthera orbiculata (Pursh) Lindl.
   large roundleaved orchid
Platanthera orbiculata var. orbiculata (Pursh) Lindl.
   large roundleaved orchid
Platanthera stricta Lindl.
   Modoc bog orchid
Spiranthes romanzoffiana Cham.
   hooded ladiestresses

OROBANCHACEAE
Orobanche californica Cham. & Schlecht.
   California broomrape
Orobanche californica ssp. grayana (G. Beck) Heckard
   Gray's broomrape
Orobanche corymbosa (Rydb.) Ferris
   flattop broomrape
Orobanche corymbosa ssp. corymbosa (Rydb.) Ferris
   flattop broomrape
Orobanche fasciculata Nutt.
   clustered broomrape
Orobanche ludoviciana Nutt.
   Louisiana broomrape
Orobanche ludoviciana ssp. ludoviciana Nutt.
   sand broomrape
Orobanche ludoviciana ssp. multiflora (Nutt.) Collins, comb. nov. ined.
   manyflowered broomrape
Orobanche pinorum Geyer ex Hook.
   conifer broomrape
Orobanche uniflora L.
   oneflowered broomrape

OXALIDACEAE
Oxalis stricta L.
   common yellow oxalis
Oxalis trilliifolia Hook.
   threeleaf woodsorrel

PAEONIACEAE
Paeonia brownii Dougl. ex Hook.
   Brown's peony

PAPAVERACEAE
Eschscholzia californica Cham.
   California poppy
Papaver lapponicum (Tolm.) Nordh.
   Arctic poppy
Papaver lapponicum ssp. occidentale (Lundstr.) Knaben
   Lapland poppy
Papaver rhoeas L.
   corn poppy

PINACEAE
Abies concolor (Gord. & Glend.) Lindl. ex Hildebr.
   white fir
Abies concolor var. concolor (Gord. & Glend.) Lindl. ex Hildebr.
   white fir
Abies grandis (Dougl. ex D. Don) Lindl.
   grand fir
Abies lasiocarpa (Hook.) Nutt.
   subalpine fir
Abies lasiocarpa var. lasiocarpa (Hook.) Nutt.
   subalpine fir
Larix lyallii Parl.
   subalpine larch
Larix occidentalis Nutt.
   western larch
Picea engelmannii Parry ex Engelm.
   Engelmann's spruce
Picea pungens Engelm.
   blue spruce
Pinus albicaulis Engelm.
   whitebark pine
Pinus contorta Dougl. ex Loud.
   lodgepole pine
Pinus contorta var. latifolia Engelm. ex S. Wats.
   tall lodgepole pine
Pinus contorta var. murrayana (Grev. & Balf.) Engelm.
   Murray lodgepole pine
Pinus flexilis James
   limber pine
Pinus monophylla Torr. & Frem.
   singleleaf pinyon
Pinus monticola Dougl. ex D. Don
   western white pine
Pinus ponderosa P.& C. Lawson
   ponderosa pine
Pinus ponderosa var. scopulorum Engelm.
   ponderosa pine
Pseudotsuga menziesii (Mirbel) Franco
   Douglas fir
Pseudotsuga menziesii var. glauca (Beissn.) Franco
   Rocky Mountain Douglas fir
Tsuga heterophylla (Raf.) Sarg.
   western hemlock
Tsuga mertensiana (Bong.) Carr.
   mountain hemlock

PLANTAGINACEAE
Plantago elongata Pursh
   longleaf plantain
Plantago elongata ssp. elongata Pursh
   prairie plantain
Plantago eriopoda Torr.
   redwool plantain
Plantago lanceolata L.
   narrowleaf plantain
Plantago major L.
   common plantain
Plantago major var. major L.
   common plantain
Plantago major var. pachyphylla Pilger
   thickleaf plantain
Plantago patagonica Jacq.
   woolly plantain
Plantago tweedyi Gray
   Tweedy's plantain

POLEMONIACEAE
Collomia debilis (S. Wats.) Greene
   alpine mountaintrumpet
Collomia debilis var. camporum Payson
   alpine mountaintrumpet
Collomia debilis var. debilis (S. Wats.) Greene
   alpine mountaintrumpet
Collomia debilis var. trifida Payson
   alpine mountaintrumpet
Collomia grandiflora Dougl. ex Lindl.
   largeflower mountaintrumpet
Collomia heterophylla Dougl. ex Hook.
   variableleaf mountaintrumpet
Collomia linearis Nutt.
   narrowleaf mountaintrumpet
Collomia macrocalyx Leib. ex Brand
   bristleflower mountaintrumpet
Collomia tenella Gray
   diffuse mountaintrumpet
Collomia tinctoria Kellogg
   yellowstaining mountaintrumpet
Eriastrum sparsiflorum (Eastw.) Mason
   Great Basin woolstar
Eriastrum sparsiflorum ssp. sparsiflorum (Eastw.) Mason
   Great Basin woolstar
Eriastrum wilcoxii (A. Nels.) Mason
   Wilcox's woolstar
Gilia capillaris Kellogg
   miniature gilia
Gilia capitata Sims
   bluehead gilia
Gilia capitata ssp. capitata Sims
   bluehead gilia
Gilia inconspicua (Sm.) Sweet
   shy gilia
Gilia leptomeria Gray
   sand gilia
Gilia micromeria Gray
   dainty gilia
Gilia sinuata Dougl. ex Benth.
   rosy gilia
Gilia tenerrima Gray
   delicate gilia
Gilia tweedyi Rydb.
   Tweedy's gila
Gymnosteris nudicaulis (Hook. & Arn.) Greene
   nakedstem gymnosteris
Gymnosteris parvula Heller
   smallflower gymnosteris
Ipomopsis aggregata (Pursh) V. Grant
   skyrocket gilia
Ipomopsis aggregata ssp. aggregata (Pursh) V. Grant
   skyrocket gilia
Ipomopsis aggregata ssp. formosissima (Greene) Wherry
   scarlet skyrocket
Ipomopsis congesta (Hook.) V. Grant
   ballhead gilia
Ipomopsis congesta ssp. congesta (Hook.) V. Grant
   ballhead gilia
Ipomopsis congesta ssp. palmifrons (Brand) Day
   ballhead gilia
Ipomopsis congesta ssp. viridis (Cronq.) Day
   ballhead gilia
Ipomopsis minutiflora (Benth.) V. Grant
   littleflower gilia
Ipomopsis polycladon (Torr.) V. Grant
   manybranched gilia
Ipomopsis pumila (Nutt.) V. Grant
   dwarf gilia
Ipomopsis spicata (Nutt.) V. Grant
   spiked gilia
Ipomopsis spicata ssp. capitata (Gray) V. Grant
   spiked gilia
Ipomopsis tenuituba (Rydb.) V. Grant
   slendertube skyrocket
Ipomopsis tenuituba ssp. tenuituba (Rydb.) V. Grant
   slendertube skyrocket
Langloisia setosissima (Torr. & Gray ex Torr.) Greene
   moth langloisia
Langloisia setosissima ssp. punctata (Gray ex Coville) Timbrook
   Great Basin langloisia
Langloisia setosissima ssp. setosissima (Torr. & Gray ex Torr.) Greene
   Great Basin langloisia
Leptodactylon glabrum Patterson & Yoder-Williams
   smooth pricklyphlox
Leptodactylon pungens (Torr.) Torr. ex Nutt.
   granite pricklygilia
Leptodactylon watsonii (Gray) Rydb.
   Watson's pricklygilia
Linanthus harknessii (Curran) Greene
   Harkness' flaxflower
Linanthus harknessii ssp. harknessii (Curran) Greene
   Harkness' flaxflower
Linanthus liniflorus (Benth.) Greene
   narrowflower flaxflower
Linanthus liniflorus ssp. pharnaceoides (Benth.) Mason
   lighthouse flaxflower
Linanthus nuttallii (Gray) Greene ex Milliken
   Nuttall's deserttrumpets
Linanthus nuttallii ssp. nuttallii (Gray) Greene ex Milliken
   Nuttall's deserttrumpets
Linanthus septentrionalis Mason
   northern linanthus
Navarretia breweri (Gray) Greene
   Brewer's navarretia
Navarretia divaricata (Torr. ex Gray) Greene
   divaricate navarretia
Navarretia divaricata ssp. divaricata (Torr. ex Gray) Greene
   divaricate navarretia
Navarretia intertexta (Benth.) Hook.
   needleleaf navarretia
Navarretia intertexta ssp. intertexta (Benth.) Hook.
   needleleaf navarretia
Navarretia intertexta ssp. propinqua (Suksdorf) Day
   near navarretia
Navarretia leucocephala Benth.
   whitehead navarretia
Navarretia leucocephala ssp. minima (Nutt.) Day
   least navarretia
Phlox aculeata A. Nels.
   sagebrush phlox
Phlox albomarginata M.E. Jones
   lostriver phlox
Phlox albomarginata ssp. albomarginata M.E. Jones
   whitemargin phlox
Phlox albomarginata ssp. diapensioides (Rydb.) Wherry
   whitemargin phlox
Phlox austromontana Coville
   desert phlox
Phlox austromontana ssp. austromontana Coville
   desert mountain phlox
Phlox austromontana ssp. densa (Brand) Wherry
   dense desert phlox
Phlox caespitosa Nutt.
   tufted phlox
Phlox colubrina Wherry & Constance
   Snake River phlox
Phlox diffusa Benth.
   spreading phlox
Phlox diffusa ssp. longistylis Wherry
   spreading phlox
Phlox diffusa ssp. scleranthifolia (Rydb.) Wherry
   spreading phlox
Phlox diffusa ssp. subcarinata Wherry
   spreading phlox
Phlox gracilis (Hook.) Greene
   slender phlox
Phlox gracilis ssp. gracilis (Hook.) Greene
   slender phlox
Phlox gracilis ssp. humilis (Greene) Mason
   dwarf phlox
Phlox hoodii Richards.
   spiny phlox
Phlox hoodii ssp. canescens (Torr. & Gray) Wherry
   carpet phlox
Phlox hoodii ssp. glabrata (E. Nels.) Wherry
   carpet phlox
Phlox hoodii ssp. hoodii Richards.
   Hood's phlox
Phlox hoodii ssp. lanata (Piper) Munz
   carpet phlox
Phlox hoodii ssp. muscoides (Nutt.) Wherry
   musk phlox
Phlox hoodii ssp. viscidula (Wherry) Wherry
   carpet phlox
Phlox idahonis Wherry
   Clearwater phlox
Phlox kelseyi Britt.
   Kelsey's phlox
Phlox kelseyi ssp. glandulosa Wherry
   marsh phlox
Phlox kelseyi ssp. kelseyi Britt.
   Kelsey's phlox
Phlox kelseyi ssp. salina (M.E. Jones) Wherry
   saline phlox
Phlox longifolia Nutt.
   longleaf phlox
Phlox longifolia ssp. longifolia Nutt.
   longleaf phlox
Phlox mollis Wherry
   soft phlox
Phlox multiflora A. Nels.
   flowery phlox
Phlox multiflora ssp. depressa (E. Nels.) Wherry
   Rocky Mountain phlox
Phlox multiflora ssp. multiflora A. Nels.
   flowery phlox
Phlox pulvinata (Wherry) Cronq.
   cushion phlox
Phlox rigida Benth.
   stiff phlox
Phlox speciosa Pursh
   showy phlox
Phlox speciosa ssp. occidentalis (Dur. ex Torr.) Wherry
   showy phlox
Phlox speciosa ssp. speciosa Pursh
   showy phlox
Phlox variabilis Brand
   variegated phlox
Phlox viridis E. Nels.
   green phlox
Phlox viridis ssp. compacta (Brand) Wherry
   green phlox
Phlox viridis ssp. longipes (M.E. Jones) Wherry
   green phlox
Phlox viridis ssp. viridis E. Nels.
   green phlox
Phlox viscida E. Nels.
   sticky phlox
Polemonium californicum Eastw.
   moving polemonium
Polemonium foliosissimum Gray
   towering Jacobsladder
Polemonium foliosissimum var. alpinum Brand
   alpine Jacobsladder
Polemonium foliosissimum var. foliosissimum Gray
   towering Jacobsladder
Polemonium micranthum Benth.
   annual polemonium
Polemonium occidentale Greene
   western polemonium
Polemonium occidentale ssp. occidentale Greene
   western polemonium
Polemonium pulcherrimum Hook.
   skunkleaf polemonium
Polemonium pulcherrimum ssp. delicatum (Rydb.) Brand
   skunkweed polemonium
Polemonium pulcherrimum ssp. pulcherrimum Hook.
   pretty Jacobsladder
Polemonium viscosum Nutt.
   sticky polemonium

POLYGONACEAE
Chorizanthe brevicornu Torr.
   brittle spineflower
Chorizanthe brevicornu var. spathulata (Small ex Rydb.) C.L. Hitchc.
   brittle spineflower
Chorizanthe watsonii Torr. & Gray
   fivetooth spineflower
Eriogonum acaule Nutt.
   singlestem buckwheat
Eriogonum alatum Torr.
   winged buckwheat
Eriogonum alatum var. alatum Torr.
   winged buckwheat
Eriogonum androsaceum Benth.
   rockjasmine buckwheat
Eriogonum angulosum Benth.
   anglestem buckwheat
Eriogonum baileyi S. Wats.
   Bailey's buckwheat
Eriogonum baileyi var. baileyi S. Wats.
   Bailey's buckwheat
Eriogonum brevicaule Nutt.
   shortstem buckwheat
Eriogonum brevicaule var. brevicaule Nutt.
   shortstem buckwheat
Eriogonum brevicaule var. laxifolium (Torr. & Gray) Reveal
   shortstem buckwheat
Eriogonum caespitosum Nutt.
   matted buckwheat
Eriogonum capistratum Reveal
   hidden buckwheat
Eriogonum capistratum var. welshii Reveal
   Welsh's buckwheat
Eriogonum cernuum Nutt.
   nodding buckwheat
Eriogonum cernuum var. cernuum Nutt.
   nodding buckwheat
Eriogonum compositum Dougl. ex Benth.
   arrowleaf buckwheat
Eriogonum compositum var. compositum Dougl. ex Benth.
   arrowleaf buckwheat
Eriogonum compositum var. leianthum Hook.
   arrowleaf buckwheat
Eriogonum desertorum (Maguire) R.J. Davis
   Great Basin Desert buckwheat
Eriogonum douglasii Benth.
   Douglas' buckwheat
Eriogonum douglasii var. douglasii Benth.
   Douglas' buckwheat
Eriogonum douglasii var. sublineare (S. Stokes) Reveal
   Douglas' buckwheat
Eriogonum elatum Dougl. ex Benth.
   tall woolly buckwheat
Eriogonum elatum var. elatum Dougl. ex Benth.
   tall woolly buckwheat
Eriogonum flavum Nutt.
   yellow eriogonum
Eriogonum flavum var. flavum Nutt.
   alpine golden buckwheat
Eriogonum flavum var. piperi (Greene) M.E. Jones
   Piper's golden buckwheat
Eriogonum heracleoides Nutt.
   parsnipflower buckwheat
Eriogonum heracleoides var. angustifolium (Nutt.) Torr. & Gray
   parsnipflower buckwheat
Eriogonum heracleoides var. heracleoides Nutt.
   parsnipflower buckwheat
Eriogonum hookeri S. Wats.
   Hooker's buckwheat
Eriogonum inerme (S. Wats.) Jepson
   unarmed buckwheat
Eriogonum kingii Torr. & Gray
   Ruby Mountain buckwheat
Eriogonum maculatum Heller
   spotted buckwheat
Eriogonum mancum Rydb.
   imperfect buckwheat
Eriogonum meledonum Reveal
   bridle buckwheat
Eriogonum microthecum Nutt.
   slender buckwheat
Eriogonum microthecum var. laxiflorum Hook.
   slender buckwheat
Eriogonum microthecum var. microthecum Nutt.
   slender buckwheat
Eriogonum nidularium Coville
   birdnest buckwheat
Eriogonum niveum Dougl. ex Benth.
   snow buckwheat
Eriogonum novonudum M.E. Peck
   falsenaked buckwheat
Eriogonum ochrocephalum S. Wats.
   whitewoolly buckwheat
Eriogonum ochrocephalum var. calcareum (S. Stokes) M.E. Peck
   whitewoolly buckwheat
Eriogonum ochrocephalum var. sceptrum Reveal
   whitewoolly buckwheat
Eriogonum ovalifolium Nutt.
   cushion buckwheat
Eriogonum ovalifolium var. depressum Blank.
   cushion buckwheat
Eriogonum ovalifolium var. nivale (Canby) M.E. Jones
   cushion buckwheat
Eriogonum ovalifolium var. ochroleucum (Small ex Rydb.) M.E. Peck
   cushion buckwheat
Eriogonum ovalifolium var. ovalifolium Nutt.
   cushion buckwheat
Eriogonum ovalifolium var. purpureum (Nutt.) Dur.
   cushion buckwheat
Eriogonum pauciflorum Pursh
   fewflower buckwheat
Eriogonum pauciflorum var. pauciflorum Pursh
   fewflower buckwheat
Eriogonum pusillum Torr. & Gray
   yellowturbans
Eriogonum pyrolifolium Hook.
   Shasta buckwheat
Eriogonum pyrolifolium var. coryphaeum Torr. & Gray
   Shasta buckwheat
Eriogonum pyrolifolium var. pyrolifolium Hook.
   Shasta buckwheat
Eriogonum salicornioides Gandog.
   saltwort buckwheat
Eriogonum shockleyi S. Wats.
   Shockley's buckwheat
Eriogonum shockleyi var. packardiae Reveal
   Packard's buckwheat
Eriogonum shockleyi var. shockleyi S. Wats.
   Shockley's buckwheat
Eriogonum spergulinum Gray
   spurry buckwheat
Eriogonum spergulinum var. reddingianum (M.E. Jones) J.T. Howell
   Redding buckwheat
Eriogonum sphaerocephalum Dougl. ex Benth.
   rock buckwheat
Eriogonum sphaerocephalum var. fasciculifolium (A. Nels.) S. Stokes
   rock buckwheat
Eriogonum sphaerocephalum var. halimioides S. Stokes
   rock buckwheat
Eriogonum sphaerocephalum var. sphaerocephalum Dougl. ex Benth.
   rock buckwheat
Eriogonum strictum Benth.
   Blue Mountain buckwheat
Eriogonum strictum ssp. proliferum (Torr. & Gray) S. Stokes
   Blue Mountain buckwheat
Eriogonum strictum ssp. proliferum var. anserinum (Greene) R.J. Davis
   Blue Mountain buckwheat
Eriogonum strictum ssp. proliferum var. proliferum (Torr. & Gray) C.L. Hitchc.
   Blue Mountain buckwheat
Eriogonum strictum ssp. strictum Benth.
   Blue Mountain buckwheat
Eriogonum thymoides Benth.
   thymeleaf buckwheat
Eriogonum umbellatum Torr.
   sulphur wildbuckwheat
Eriogonum umbellatum var. aureum (Gandog.) Reveal
   sulphurflower buckwheat
Eriogonum umbellatum var. devestivum Reveal
   sulphurflower buckwheat
Eriogonum umbellatum var. dichrocephalum Gandog.
   sulphurflower buckwheat
Eriogonum umbellatum var. majus Hook.
   sulphurflower buckwheat
Eriogonum umbellatum var. polyanthum (Benth.) M.E. Jones
   sulphurflower buckwheat
Eriogonum umbellatum var. porteri (Small) S. Stokes
   Porter's buckwheat
Eriogonum umbellatum var. stellatum (Benth.) M.E. Jones
   sulphurflower buckwheat
Eriogonum umbellatum var. umbellatum Torr.
   sulphurflower buckwheat
Eriogonum vimineum Dougl. ex Benth.
   wickerstem buckwheat
Eriogonum watsonii Torr. & Gray
   Watson's buckwheat
Oxyria digyna (L.) Hill
   alpine mountainsorrel
Oxytheca dendroidea Nutt.
   narrowleaf oxytheca
Polygonum achoreum Blake
   leathery knotweed
Polygonum amphibium L.
   water knotweed
Polygonum amphibium var. emersum Michx.
   longroot smartweed
Polygonum amphibium var. stipulaceum Coleman
   water smartweed
Polygonum aviculare L.
   prostrate knotweed
Polygonum bellardii All.
   narrowleaf knotweed
Polygonum bistortoides Pursh
   American bistort
Polygonum buxiforme Small
   box knotweed
Polygonum convolvulus L.
   black bindweed
Polygonum douglasii Greene
   Douglas' knotweed
Polygonum douglasii ssp. austiniae (Greene) E. Murr.
   Austin knotweed
Polygonum douglasii ssp. douglasii Greene
   Douglas' knotweed
Polygonum douglasii ssp. engelmannii (Greene) Kartesz & Gandhi
   Engelmann's knotweed
Polygonum douglasii ssp. johnstonii (Munz) Hickman
   Johnston's knotweed
Polygonum douglasii ssp. majus (Meisn.) Hickman
   large knotweed
Polygonum douglasii ssp. spergulariiforme (Meisn. ex Small) Hickman
   scatter knotweed
Polygonum heterosepalum M.E. Peck & Ownbey
   oddsepal knotweed
Polygonum hydropiper L.
   marshpepper knotweed
Polygonum hydropiperoides Michx.
   swamp smartweed
Polygonum lapathifolium L.
   curlytop knotweed
Polygonum lapathifolium var. lapathifolium L.
   curlytop knotweed
Polygonum minimum S. Wats.
   broadleaf knotweed
Polygonum newberryi Small
   Newberry's knotweed
Polygonum persicaria L.
   spotted ladysthumb
Polygonum phytolaccifolium Meisn. ex Small
   poke knotweed
Polygonum polycnemoides Jaubert & Spach
   manyleg knotweed
Polygonum polygaloides Wallich ex Meisn.
   polygala knotweed
Polygonum polygaloides ssp. confertiflorum (Nutt. ex Piper) Hickman
   fruitleaf knotweed
Polygonum polygaloides ssp. kelloggii (Greene) Hickman
   Kellogg's knotweed
Polygonum polygaloides ssp. polygaloides Wallich ex Meisn.
   fruitleaf knotweed
Polygonum punctatum Ell.
   dotted smartweed
Polygonum punctatum var. confertiflorum (Meisn.) Fassett
   dotted smartweed
Polygonum ramosissimum Michx.
   bushy knotweed
Polygonum ramosissimum var. prolificum Small
   bushy knotweed
Polygonum ramosissimum var. ramosissimum Michx.
   bushy knotweed
Polygonum viviparum L.
   alpine bistort
Rumex acetosella L.
   common sheep sorrel
Rumex aquaticus L.
   western dock
Rumex aquaticus var. fenestratus (Greene) Dorn
   western dock
Rumex crispus L.
   curly dock
Rumex densiflorus Osterhout
   denseflowered dock
Rumex maritimus L.
   golden dock
Rumex obtusifolius L.
   bitter dock
Rumex paucifolius Nutt.
   fewleaved dock
Rumex paucifolius ssp. paucifolius Nutt.
   fewleaved dock
Rumex salicifolius Weinm.
   willow dock
Rumex salicifolius var. denticulatus Torr.
   toothed willow dock
Rumex salicifolius var. mexicanus (Meisn.) C.L. Hitchc.
   Mexican dock
Rumex venosus Pursh
   veiny dock

POLYPODIACEAE
Polypodium glycyrrhiza D.C. Eat.
   licorice fern
Polypodium hesperium Maxon
   western polypody

PORTULACACEAE
Calandrinia ciliata (Ruiz & Pavon) DC.
   fringed redmaids
Cistanthe rosea (S. Wats.) Hershkovitz
   rosy pussypaws
Cistanthe umbellata (Torr.) Hershkovitz
   Mt. Hood pussypaws
Claytonia arenicola Henderson
   sand springbeauty
Claytonia cordifolia S. Wats.
   heartleaf springbeauty
Claytonia lanceolata Pursh
   lanceleaf springbeauty
Claytonia lanceolata var. flava (A. Nels.) C.L. Hitchc.
   lanceleaf springbeauty
Claytonia lanceolata var. idahoensis R.J. Davis
   Idaho springbeauty
Claytonia lanceolata var. lanceolata Pursh
   lanceleaf springbeauty
Claytonia megarhiza (Gray) Parry ex S. Wats.
   alpine springbeauty
Claytonia megarhiza var. megarhiza (Gray) Parry ex S. Wats.
   alpine springbeauty
Claytonia parviflora Dougl. ex Hook.
   streambank springbeauty
Claytonia perfoliata Donn ex Willd.
   miner's lettuce
Claytonia perfoliata ssp. perfoliata Donn ex Willd.
   miner's lettuce
Claytonia perfoliata ssp. perfoliata var. perfoliata Donn ex Willd.
   miner's lettuce
Claytonia rubra (T.J. Howell) Tidestrom
   redstem springbeauty
Claytonia sibirica L.
   Siberian springbeauty
Claytonia sibirica var. sibirica L.
   Siberian springbeauty
Lewisia columbiana (T.J. Howell ex Gray) B.L. Robins.
   Columbian bitterroot
Lewisia columbiana var. columbiana (T.J. Howell ex Gray) B.L. Robins.
   Columbian bitterroot
Lewisia columbiana var. wallowensis C.L. Hitchc.
   Wallowa lewisia
Lewisia kelloggii K. Brandeg.
   Kellogg's lewisia
Lewisia nevadensis (Gray) B.L. Robins.
   Nevada bitterroot
Lewisia pygmaea (Gray) B.L. Robins.
   pigmy bitterroot
Lewisia rediviva Pursh
   Oregon bitterroot
Lewisia rediviva var. rediviva Pursh
   Oregon bitterroot
Lewisia triphylla (S. Wats.) B.L. Robins.
   threeleaf lewisia
Montia chamissoi (Ledeb. ex Spreng.) Greene
   water minerslettuce
Montia dichotoma (Nutt.) T.J. Howell
   dwarf minerslettuce
Montia fontana L.
   annual water minerslettuce
Montia fontana ssp. fontana L.
   annual water minerslettuce
Montia linearis (Dougl. ex Hook.) Greene
   narrowleaf minerslettuce
Montia parvifolia (Moc. ex DC.) Greene
   littleleaf minerslettuce
Montia parvifolia ssp. parvifolia (Moc. ex DC.) Greene
   littleleaf minerslettuce
Montia perfoliata (Donn ex Willd.) T.J. Howell
   = Claytonia perfoliata ssp. perfoliata
Portulaca oleracea L.
   little hogweed

POTAMOGETONACEAE
Potamogeton alpinus Balbis
   alpine pondweed
Potamogeton amplifolius Tuckerman
   largeleaf pondweed
Potamogeton diversifolius Raf.
   waterthread pondweed
Potamogeton epihydrus Raf.
   ribbonleaf pondweed
Potamogeton filiformis Pers.
   fineleaf pondweed
Potamogeton filiformis var. alpinus (Blytt) Aschers. & Graebn.
   fineleaf pondweed
Potamogeton foliosus Raf.
   leafy pondweed
Potamogeton foliosus var. fibrillosus (Fern.) Haynes & Reveal
   leafy pondweed
Potamogeton foliosus var. foliosus Raf.
   leafy pondweed
Potamogeton friesii Rupr.
   Fries' pondweed
Potamogeton gramineus L.
   variableleaf pondweed
Potamogeton illinoensis Morong
   Illinois pondweed
Potamogeton natans L.
   floating pondweed
Potamogeton nodosus Poir.
   longleaf pondweed
Potamogeton pectinatus L.
   sago pondweed
Potamogeton praelongus Wulfen
   whitestem pondweed
Potamogeton pusillus L.
   small pondweed
Potamogeton pusillus var. pusillus L.
   small pondweed
Potamogeton pusillus var. tenuissimus Mert. & Koch
   small pondweed
Potamogeton richardsonii (Benn.) Rydb.
   Richardson's pondweed
Potamogeton robbinsii Oakes
   Robbins' pondweed
Potamogeton strictifolius Benn.
   narrowleaf pondweed
Potamogeton vaginatus Turcz.
   sheathed pondweed
Potamogeton zosteriformis Fern.
   flatstem pondweed

PRIMULACEAE
Anagallis arvensis L.
   scarlet pimpernel
Anagallis minima (L.) Krause
   chaffweed
Androsace occidentalis Pursh
   western rockjasmine
Androsace septentrionalis L.
   pygmyflower rockjasmine
Androsace septentrionalis ssp. puberulenta (Rydb.) G.T. Robbins
   pygmyflower rockjasmine
Androsace septentrionalis ssp. septentrionalis L.
   pygmyflower rockjasmine
Androsace septentrionalis ssp. subulifera (Gray) G.T. Robbins
   pygmyflower rockjasmine
Androsace septentrionalis ssp. subumbellata (A. Nels.) G.T. Robbins
   pygmyflower rockjasmine
Dodecatheon conjugens Greene
   Bonneville shootingstar
Dodecatheon conjugens ssp. viscidum (Piper) H.J. Thompson
   Bonneville shootingstar
Dodecatheon conjugens var. conjugens Greene
   Bonneville shootingstar
Dodecatheon dentatum Hook.
   white shootingstar
Dodecatheon hendersonii Gray
   mosquito bills
Dodecatheon hendersonii ssp. hendersonii Gray
   Henderson's shootingstar
Dodecatheon jeffreyi Van Houtte
   tall mountain shootingstar
Dodecatheon jeffreyi ssp. jeffreyi Van Houtte
   Jeffrey's shootingstar
Dodecatheon meadia L.
   pride of Ohio
Dodecatheon meadia ssp. meadia L.
   pride of Ohio
Dodecatheon pulchellum (Raf.) Merr.
   darkthroat shootingstar
Dodecatheon pulchellum ssp. cusickii (Greene) Calder & Taylor
   Cusick's shootingstar
Dodecatheon pulchellum ssp. pulchellum (Raf.) Merr.
   darkthroat shootingstar
Douglasia idahoensis D. Henderson
   Idaho dwarfprimrose
Douglasia montana Gray
   Rocky Mountain dwarfprimrose
Glaux maritima L.
   sea milkwort
Lysimachia ciliata L.
   fringed loosestrife
Lysimachia terrestris (L.) B.S.P.
   earth loosestrife
Lysimachia thyrsiflora L.
   tufted loosestrife
Primula alcalina Cholewa & D. Henderson
   bluedome primrose
Primula cusickiana (Gray) Gray
   Cusick's primrose
Primula incana M.E. Jones
   silvery primrose
Primula parryi Gray
   Parry's primrose
Trientalis borealis Raf.
   American starflower
Trientalis borealis ssp. latifolia (Hook.) Hulten
   broadleaf starflower
Trientalis europaea L.
   arctic starflower
Trientalis europaea ssp. arctica (Fisch. ex Hook.) Hulten
   arctic starflower

PTERIDACEAE
Adiantum aleuticum (Rupr.) Paris
   Aleutian maidenhair
Adiantum pedatum L.
   northern maidenhair
Aspidotis densa (Brack.) Lellinger
   Indian's dream
Cheilanthes feei T. Moore
   slender lipfern
Cheilanthes gracillima D.C. Eat.
   lace lipfern
Cryptogramma acrostichoides R. Br.
   American rockbrake
Cryptogramma stelleri (Gmel.) Prantl
   fragile rockbrake
Pellaea breweri D.C. Eat.
   Brewer's cliffbrake
Pellaea bridgesii Hook.
   Bridges' cliffbrake
Pellaea glabella Mett. ex Kuhn
   dwarf cliffbrake
Pellaea glabella ssp. simplex (Butters) A.& D. Love
   smooth cliffbrake
Pentagrama Yatskievych, Windham & Wollenweber
   gold fern
Pentagrama triangularis (Kaulfuss) Yatskievych, Windham & Wollenweber
   western goldfern
Pentagrama triangularis ssp. triangularis (Kaulfuss) Yatskievych, Windham & Wollenweber
   western goldfern

RANUNCULACEAE
Aconitum columbianum Nutt.
   Columbian monkshood
Aconitum columbianum ssp. columbianum Nutt.
Aconitum columbianum var. columbianum Nutt.
   Columbian monkshood
Actaea arguta Nutt.
   = Actaea rubra ssp. arguta
Actaea rubra (Ait.) Willd.
   red baneberry
Actaea rubra ssp. arguta (Nutt.) Hulten
   red baneberry
Adonis aestivalis L.
   summer pheasant's eye
Adonis annua L.
   blooddrops
Anemone drummondii S. Wats.
   Drummond's anemone
Anemone drummondii ssp. drummondii S. Wats.
   Drummond's anemone
Anemone multifida Poir.
   Pacific anemone
Anemone multifida var. hudsoniana DC.
   Hudson's anemone
Anemone multifida var. multifida Poir.
   Pacific anemone
Anemone occidentalis S. Wats.
   = Pulsatilla occidentalis
Anemone parviflora Michx.
   smallflowered anemone
Anemone piperi Britt. ex Rydb.
   Piper's anemone
Anemone tetonensis Porter ex Britt.
   Teton anemone
Aquilegia coerulea James
   Colorado blue columbine
Aquilegia coerulea var. coerulea James
   Colorado blue columbine
Aquilegia coerulea var. ochroleuca Hook.
   white Colorado columbine
Aquilegia flavescens S. Wats.
   yellow columbine
Aquilegia flavescens var. flavescens S. Wats.
   yellow columbine
Aquilegia flavescens var. miniata A. Nels. & J.F. Macbr.
   yellow columbine
Aquilegia formosa Fisch. ex DC.
   western columbine
Caltha biflora DC.
   = Caltha leptosepala ssp. howellii
Caltha leptosepala DC.
   white marshmarigold
Caltha leptosepala ssp. howellii (Huth) P.G. Sm.
   Howell's marshmarigold
Caltha leptosepala ssp. leptosepala DC.
   white marshmarigold
Caltha leptosepala ssp. leptosepala var. leptosepala DC.
   white marshmarigold
Caltha leptosepala ssp. leptosepala var. sulfurea C.L. Hitchc.
   yellow marshmarigold
Ceratocephala testiculata (Crantz) Bess.
   curveseed butterwort
Clematis columbiana (Nutt.) Torr. & Gray
   rock clematis
Clematis columbiana var. columbiana (Nutt.) Torr. & Gray
   rock clematis
Clematis hirsutissima Pursh
   hairy clematis
Clematis hirsutissima var. hirsutissima Pursh
   hairy clematis
Clematis ligusticifolia Nutt.
   western white clematis
Clematis ligusticifolia var. ligusticifolia Nutt.
   western white clematis
Clematis occidentalis (Hornem.) DC.
   western blue virginsbower
Clematis orientalis L.
   oriental virginsbower
Coptis occidentalis (Nutt.) Torr. & Gray
   Idaho goldthread
Delphinium X burkei Greene
   Burk larkspur
Delphinium X occidentale (S. Wats.) S. Wats.
   duncecap larkspur
Delphinium X xylorrhizum Rydb. (pro sp.)
   larkspur
Delphinium andersonii Gray
   Anderson's larkspur
Delphinium andersonii ssp. andersonii Gray
   Anderson's larkspur
Delphinium bicolor Nutt.
   little larkspur
Delphinium depauperatum Nutt.
   slim larkspur
Delphinium glaucescens Rydb.
   smooth larkspur
Delphinium nuttallianum Pritz. ex Walp.
   Nuttal's larkspur
Delphinium nuttallianum var. fulvum C.L. Hitchc.
   yellow larkspur
Delphinium nuttallianum var. nuttallianum Pritz. ex Walp.
   Nuttal's larkspur
Delphinium occidentale ssp. occidentale (S. Wats.) S. Wats.
   duncecap larkspur
Delphinium stachydeum (Gray) Tidestrom
   Rocky Mountain larkspur
Myosurus aristatus Benth.
   bristle mousetail
Myosurus minimus ssp. minimus L.
   tiny mousetail
Myosurus minumus L.
   tiny mousetail
Pulsatilla occidentalis (S. Wats.) Freyn
   white pasqueflower
Ranunculus abortivus L.
   littleleaf buttercup
Ranunculus abortivus var. abortivus L.
   littleleaf buttercup
Ranunculus acriformis Gray
   sharpleaf buttercup
Ranunculus acriformis var. montanensis (Rydb.) L. Benson
   mountain sharp buttercup
Ranunculus acris L.
   tall buttercup
Ranunculus acris var. acris L.
   showy buttercup
Ranunculus adoneus Gray
   alpine buttercup
Ranunculus adoneus var. alpinus (S. Wats.) L. Benson
   alpine buttercup
Ranunculus alismifolius Geyer ex Benth.
   plantainleaf buttercup
Ranunculus alismifolius var. alismellus Gray
   plantainleaf buttercup
Ranunculus alismifolius var. alismifolius Geyer ex Benth.
   plantainleaf buttercup
Ranunculus alismifolius var. davisii L. Benson
   Davis' buttercup
Ranunculus alismifolius var. montanus S. Wats.
   waterplantain buttercup
Ranunculus andersonii Gray
   Anderson's buttercup
Ranunculus andersonii var. andersonii Gray
   Anderson's buttercup
Ranunculus aquatilis L.
   whitewater crowfoot
Ranunculus arvensis L.
   corn buttercup
Ranunculus cymbalaria Pursh
   alkali buttercup
Ranunculus cymbalaria var. cymbalaria Pursh
   alkali buttercup
Ranunculus cymbalaria var. saximontanus Fern.
   Rocky Mountain buttercup
Ranunculus eschscholtzii Schlecht.
   Eschscholtz's buttercup
Ranunculus eschscholtzii var. eschscholtzii Schlecht.
   Eschscholtz's buttercup
Ranunculus eschscholtzii var. trisectus (Eastw.) L. Benson
   threesection buttercup
Ranunculus eximius Greene
   tundra buttercup
Ranunculus flabellaris Raf.
   yellow water buttercup
Ranunculus flammula L.
   spearwort buttercup
Ranunculus flammula var. filiformis (Michx.) Hook.
   flam buttercup
Ranunculus flammula var. flammula L.
   flam buttercup
Ranunculus glaberrimus Hook.
   sagebrush buttercup
Ranunculus glaberrimus var. ellipticus (Greene) Greene
   elliptical buttercup
Ranunculus glaberrimus var. glaberrimus Hook.
   sagebrush buttercup
Ranunculus gmelinii DC.
   Gmelin's buttercup
Ranunculus gmelinii var. limosus (Nutt.) Hara
   Gmelin's buttercup
Ranunculus gmelinii var. purshii (Richards.) Hara
   Pursh's buttercup
Ranunculus hebecarpus Hook. & Arn.
   delicate buttercup
Ranunculus hyperboreus Rottb.
   high northern buttercup
Ranunculus hyperboreus var. hyperboreus Rottb.
   large nodding buttercup
Ranunculus inamoenus Greene
   graceful buttercup
Ranunculus inamoenus var. alpeophilus (A. Nels.) L. Benson
   graceful buttercup
Ranunculus inamoenus var. inamoenus Greene
   graceful buttercup
Ranunculus jovis A. Nels.
   Utah buttercup
Ranunculus karelinii Czern.
   ice cold buttercup
Ranunculus longirostris Godr.
   longbeak buttercup
Ranunculus macounii Britt.
   Macoun's buttercup
Ranunculus oresterus L. Benson
   Blue Mountain buttercup
Ranunculus orthorhynchus Hook.
   straightbeak buttercup
Ranunculus orthorhynchus var. orthorhynchus Hook.
   straightbeak buttercup
Ranunculus pensylvanicus L. f.
   Pennsylvania buttercup
Ranunculus populago Greene
   popular buttercup
Ranunculus pygmaeus Wahlenb.
   pygmy buttercup
Ranunculus repens L.
   creeping buttercup
Ranunculus repens var. degeneratus Schur
   creeping buttercup
Ranunculus repens var. glabratus DC.
   creeping buttercup
Ranunculus repens var. repens L.
   creeping buttercup
Ranunculus sceleratus L.
   celeryleaf buttercup
Ranunculus sceleratus var. multifidus Nutt.
   blister buttercup
Ranunculus suksdorfii Gray
   Suksdorf's buttercup
Ranunculus trichophyllus Chaix
   whitewater crowfoot
Ranunculus trichophyllus var. trichophyllus Chaix
   hairleaf water buttercup
Ranunculus uncinatus D. Don ex G. Don
   hooked buttercup
Ranunculus uncinatus var. parviflorus (Torr.) L. Benson
   common Idaho buttercup
Ranunculus uncinatus var. uncinatus D. Don ex G. Don
   woodland buttercup
Ranunculus verecundus B.L. Robins. ex Piper
   wetslope buttercup
Thalictrum alpinum L.
   alpine meadowrue
Thalictrum dasycarpum Fisch. & Ave-Lall.
   purple meadowrue
Thalictrum fendleri Engelm. ex Gray
   Fendler's meadowrue
Thalictrum occidentale Gray
   western meadowrue
Thalictrum occidentale var. occidentale Gray
   western meadowrue
Thalictrum sparsiflorum Turcz. ex Fisch. & C.A. Mey.
   fewflower meadowrue
Thalictrum sparsiflorum var. saximontanum Boivin
   fewflower meadowrue
Thalictrum venulosum Trel.
   veiny meadowrue
Trautvetteria caroliniensis (Walt.) Vail
   Carolina bugbane
Trollius laxus Salisb.
   American globeflower
Trollius laxus ssp. albiflorus (Gray) A.& D. Love & Kapoor
   American globeflower

RHAMNACEAE
Ceanothus prostratus Benth.
   squawcarpet
Ceanothus prostratus ssp. prostratus Benth.
   squawcarpet
Ceanothus sanguineus Pursh
   redstem ceanothus
Ceanothus velutinus Dougl. ex Hook.
   snowbrush ceanothus
Ceanothus velutinus ssp. velutinus Dougl. ex Hook.
   tobacco brush
Frangula purshiana (DC.) Cooper
   Pursh's buckthorn
Rhamnus alnifolia L'Her.
   alderleaf buckthorn
Rhamnus purshiana DC.
   = Frangula purshiana

ROSACEAE
Alchemilla arvensis (L.) Scop.
   = Aphanes arvensis
Alchemilla occidentalis Nutt.
   = Aphanes arvensis
Amelanchier alnifolia (Nutt.) Nutt. ex M. Roemer
   Saskatoon serviceberry
Amelanchier alnifolia var. alnifolia (Nutt.) Nutt. ex M. Roemer
   Saskatoon serviceberry
Amelanchier alnifolia var. cusickii (Fern.) C.L. Hitchc.
   Cusick's serviceberry
Amelanchier pallida Greene
   pale serviceberry
Amelanchier pumila (Torr. & Gray) Nutt. ex M. Roemer
   dwarf serviceberry
Amelanchier utahensis Koehne
   Utah serviceberry
Amelanchier utahensis ssp. utahensis Koehne
   Utah serviceberry
Aphanes arvensis L.
   field parsley piert
Argentina anserina (L.) Rydb.
   silverweed cinquefoil
Cercocarpus ledifolius Nutt.
   curlleaf mountain mahogany
Cercocarpus ledifolius var. intercedens Schneid.
   curlleaf mountain mahogany
Cercocarpus ledifolius var. intermontanus N. Holmgren
   curlleaf mountain mahogany
Cercocarpus ledifolius var. ledifolius Nutt.
   curlleaf mountain mahogany
Chamaebatiaria millefolium (Torr.) Maxim.
   fernbush
Comarum palustre L.
   purple marshlocks
Crataegus chrysocarpa Ashe
   fireberry hawthorn
Crataegus columbiana T.J. Howell
   = Crataegus douglasii var. douglasii
Crataegus douglasii Lindl.
   black hawthorn
Crataegus douglasii var. douglasii Lindl.
   Douglas' hawthorn
Crataegus rivularis Nutt.
   river hawthorn
Dryas drummondii Richards. ex Hook.
   Drummond's dryad
Dryas octopetala L.
   white dryad
Dryas octopetala ssp. hookeriana (Juz.) Hulten
   Hooker's mountainavens
Dryas octopetala ssp. octopetala L.
   eightpetal mountainavens
Dryas octopetala ssp. octopetala var. angustifolia C.L. Hitchc.
   eightpetal mountainavens
Fragaria ovalis (Lehm.) Rydb.
   = Fragaria virginiana ssp. virginiana
Fragaria vesca L.
   woodland strawberry
Fragaria vesca ssp. bracteata (Heller) Staudt
   woodland strawberry
Fragaria virginiana Duchesne
   Virginia strawberry
Fragaria virginiana ssp. glauca (S. Wats.) Staudt
   Virginia strawberry
Fragaria virginiana ssp. platypetala (Rydb.) Staudt
   Virginia strawberry
Fragaria virginiana ssp. virginiana Duchesne
   Virginia strawberry
Geum aleppicum Jacq.
   yellow avens
Geum macrophyllum Willd.
   largeleaf avens
Geum macrophyllum var. perincisum (Rydb.) Raup
   largeleaf avens
Geum rossii (R. Br.) Ser.
   Ross' avens
Geum triflorum Pursh
   prairiesmoke
Holodiscus discolor (Pursh) Maxim.
   oceanspray
Holodiscus dumosus (Nutt. ex Hook.) Heller
   rockspirea
Horkelia fusca Lindl.
   tawny horkelia
Horkelia fusca ssp. capitata (Lindl.) Keck
   bighead horkelia
Horkelia fusca ssp. parviflora (Nutt. ex Torr. & Gray) Keck
   smallflower horkelia
Ivesia baileyi S. Wats.
   Bailey's ivesia
Ivesia baileyi var. baileyi S. Wats.
   Bailey's ivesia
Ivesia baileyi var. beneolens (A. Nels. & J.F. Macbr.) Ertter
   Bailey's ivesia
Ivesia gordonii (Hook.) Torr. & Gray
   Gordon's ivesia
Ivesia tweedyi Rydb.
   Tweedy's ivesia
Kelseya uniflora (S. Wats.) Rydb.
   oneflower kelseya
Luetkea pectinata (Pursh) Kuntze
   partridgefoot
Pentaphylloides floribunda (Pursh) A. Love
   shrubby cinquefoil
Peraphyllum ramosissimum Nutt.
   squaw apple
Petrophyton caespitosum (Nutt.) Rydb.
   mat rockspirea
Petrophyton caespitosum var. caespitosum (Nutt.) Rydb.
   Rocky Mountain rockspirea
Physocarpus alternans (M.E. Jones) J.T. Howell
   dwarf ninebark
Physocarpus capitatus (Pursh) Kuntze
   Pacific ninebark
Physocarpus malvaceus (Greene) Kuntze
   mallow ninebark
Potentilla anserina L.
   = Argentina anserina
Potentilla argentea L.
   silver cinquefoil
Potentilla argentea var. argentea L.
   silver cinquefoil
Potentilla arguta Pursh
   tall cinquefoil
Potentilla arguta ssp. arguta Pursh
   tall cinquefoil
Potentilla arguta ssp. convallaria (Rydb.) Keck
   cream cinquefoil
Potentilla brevifolia Nutt. ex Torr. & Gray
   sparseleaf cinquefoil
Potentilla concinna Richards.
   elegant cinquefoil
Potentilla concinna var. concinna Richards.
   red cinquefoil
Potentilla diversifolia Lehm.
   varileaf cinquefoil
Potentilla diversifolia var. diversifolia Lehm.
   varileaf cinquefoil
Potentilla diversifolia var. perdissecta (Rydb.) C.L. Hitchc.
   mountainmeadow cinquefoil
Potentilla drummondii Lehm.
   Drummond's cinquefoil
Potentilla fissa Nutt.
   bigflower cinquefoil
Potentilla flabellifolia Hook. ex Torr. & Gray
   high mountain cinquefoil
Potentilla fruticosa auct. non L.
   = Pentaphylloides floribunda
Potentilla glandulosa Lindl.
   gland cinquefoil
Potentilla glandulosa ssp. glabrata (Rydb.) Keck
   sticky cinquefoil
Potentilla glandulosa ssp. glandulosa Lindl.
   sticky cinquefoil
Potentilla glandulosa ssp. micropetala (Rydb.) Keck
   smallpetal cinquefoil
Potentilla glandulosa ssp. nevadensis (S. Wats.) Keck
   Nevada cinquefoil
Potentilla glandulosa ssp. pseudorupestris (Rydb.) Keck
   sticky cinquefoil
Potentilla gracilis Dougl. ex Hook.
   northwest cinquefoil
Potentilla gracilis var. brunnescens (Rydb.) C.L. Hitchc.
   brownfuz cinquefoil
Potentilla gracilis var. fastigiata (Nutt.) S. Wats.
Potentilla gracilis var. flabelliformis (Lehm.) Nutt. ex Torr. & Gray
Potentilla multisecta (S. Wats.) Rydb.
   featherleaf cinquefoil
Potentilla nivea L.
   snow cinquefoil
Potentilla nivea var. pentaphylla Lehm.
   fiveleaf cinquefoil
Potentilla norvegica L.
   Norwegian cinquefoil
Potentilla ovina Macoun
   sheep cinquefoil
Potentilla ovina var. ovina Macoun
   sheep cinquefoil
Potentilla palustris (L.) Scop.
   = Comarum palustre
Potentilla plattensis Nutt.
   Platte River cinquefoil
Potentilla pulcherrima Lehm.
   beautiful cinquefoil
Potentilla quinquefolia (Rydb.) Rydb.
   = Potentilla nivea var. pentaphylla
Potentilla recta L.
   sulphur cinquefoil
Potentilla rivalis Nutt.
   brook cinquefoil
Potentilla rivalis var. millegrana (Engelm. ex Lehm.) S. Wats.
   brook cinquefoil
Potentilla rivalis var. rivalis Nutt.
   brook cinquefoil
Prunus domestica L.
   European plum
Prunus emarginata (Dougl. ex Hook.) Walp.
   bitter cherry
Prunus emarginata var. emarginata (Dougl. ex Hook.) Walp.
   bitter cherry
Prunus mahaleb L.
   Mahaleb cherry
Prunus melanocarpa (A. Nels.) Rydb.
   = Prunus virginiana var. melanocarpa
Prunus spinosa L.
   blackthorn
Prunus virginiana L.
   common chokecherry
Prunus virginiana var. demissa (Nutt.) Torr.
   western chokecherry
Prunus virginiana var. melanocarpa (A. Nels.) Sarg.
   black chokecherry
Purshia tridentata (Pursh) DC.
   antelope bitterbrush
Rosa acicularis Lindl.
   prickly rose
Rosa acicularis ssp. sayi (Schwein.) W.H. Lewis
   prickly rose
Rosa canina L.
   dog rose
Rosa gymnocarpa Nutt.
   dwarf rose
Rosa gymnocarpa var. gymnocarpa Nutt.
   wood rose
Rosa nutkana K. Presl
   Nootka rose
Rosa nutkana var. hispida Fern.
   bristly Nootka rose
Rosa pisocarpa Gray
   cluster rose
Rosa woodsii Lindl.
   Woods' rose
Rosa woodsii var. ultramontana (S. Wats.) Jepson
   Woods' rose
Rosa woodsii var. woodsii Lindl.
   Woods' rose
Rubus bartonianus M.E. Peck
   Barton's raspberry
Rubus idaeus L.
   American red raspberry
Rubus idaeus ssp. idaeus L.
   common red raspberry
Rubus idaeus ssp. strigosus (Michx.) Focke
   grayleaf red raspberry
Rubus laciniatus Willd.
   cutleaf blackberry
Rubus leucodermis Dougl. ex Torr. & Gray
   whitebark raspberry
Rubus leucodermis var. leucodermis Dougl. ex Torr. & Gray
   whitebark raspberry
Rubus nivalis Dougl. ex Hook.
   snow raspberry
Rubus parviflorus Nutt.
   thimbleberry
Rubus pedatus Sm.
   strawberryleaf raspberry
Rubus pubescens Raf.
   dwarf red blackberry
Rubus pubescens var. pubescens Raf.
   dwarf red blackberry
Rubus spectabilis Pursh
   salmonberry
Rubus spectabilis var. spectabilis Pursh
   salmonberry
Rubus strigosus Michx.
   = Rubus idaeus ssp. strigosus
Rubus ursinus Cham. & Schlecht.
   California blackberry
Rubus ursinus ssp. macropetalus (Dougl. ex Hook.) Taylor & MacBryde
   California blackberry
Rubus vitifolius Cham. & Schlecht.
   Pacific dewberry
Sanguisorba canadensis L.
   Canadian burnet
Sanguisorba occidentalis Nutt.
   western burnet
Sibbaldia procumbens L.
   creeping sibbaldia
Sorbus aucuparia L.
   European mountainash
Sorbus scopulina Greene
   Greene mountainash
Sorbus scopulina var. scopulina Greene
   Cascade mountainash
Sorbus sitchensis M. Roemer
   western mountainash
Sorbus sitchensis var. sitchensis M. Roemer
   Sitka mountainash
Spiraea X pyramidata Greene (pro sp.)
   pyramid spirea
Spiraea betulifolia Pallas
   white spirea
Spiraea betulifolia var. lucida (Dougl. ex Greene) C.L. Hitchc.
   shinyleaf spirea
Spiraea discolor Pursh
   = Holodiscus discolor
Spiraea douglasii Hook.
   Douglas' spirea
Spiraea douglasii var. menziesii (Hook.) K. Presl
   Menzies' spirea
Spiraea splendens Baumann ex K. Koch
   rose meadowsweet
Spiraea splendens var. rosea (Gray) Kartesz & Gandhi
   rose meadowsweet
Spiraea splendens var. splendens Baumann ex K. Koch
   mountain spirea
Waldsteinia idahoensis Piper
   Idaho falsestrawberry

RUBIACEAE
Galium aparine L.
   stickywilly
Galium bifolium S. Wats.
   twinleaf bedstraw
Galium boreale L.
   northern bedstraw
Galium mexicanum Kunth
   Mexican bedstraw
Galium mexicanum ssp. asperulum (Gray) Dempster
   Mexican bedstraw
Galium serpenticum Dempster
   Intermountain bedstraw
Galium serpenticum ssp. serpenticum Dempster
   serpentine bedstraw
Galium trifidum L.
   threepetal bedstraw
Galium trifidum ssp. columbianum (Rydb.) Hulten
   threepetal bedstraw
Galium trifidum ssp. subbiflorum (Wieg.) Piper
   threepetal bedstraw
Galium triflorum Michx.
   fragrant bedstraw
Kelloggia galioides Torr.
   milk kelloggia

RUPPIACEAE
Ruppia maritima L.
   widgeongrass

SALICACEAE
Populus X acuminata Rydb. (pro sp.)
   lanceleaf cottonwood
Populus angustifolia James
   narrowleaf cottonwood
Populus balsamifera L.
   balsam poplar
Populus balsamifera ssp. balsamifera L.
   balsam poplar
Populus balsamifera ssp. trichocarpa (Torr. & Gray ex Hook.) Brayshaw
   black cottonwood
Populus candicans Ait.
   = Populus balsamifera ssp. balsamifera
Populus tremuloides Michx.
   quaking aspen
Populus trichocarpa Torr. & Gray ex Hook.
   = Populus balsamifera ssp. trichocarpa
Salix amygdaloides Anderss.
   peachleaf willow
Salix arctica R. Br. ex Richards.
Salix barclayi Anderss.
   Barclay's willow
Salix bebbiana Sarg.
   Bebb willow
Salix boothii Dorn
   Booth's willow
Salix brachycarpa Nutt.
   barrenground willow
Salix brachycarpa ssp. brachycarpa Nutt.
   barrenground willow
Salix brachycarpa ssp. brachycarpa var. brachycarpa Nutt.
   barrenground willow
Salix candida Fluegge ex Willd.
   sageleaf willow
Salix cascadensis Cockerell
   cascade willow
Salix commutata Bebb
   undergreen willow
Salix drummondiana Barratt ex Hook.
   Drummond's willow
Salix eastwoodiae Cockerell ex Heller
   mountain willow
Salix exigua Nutt.
   sandbar willow
Salix farriae Ball
   Farr's willow
Salix geyeriana Anderss.
   Geyer's willow
Salix glauca L.
   grayleaf willow
Salix glauca ssp. glauca L.
   grayleaf willow
Salix glauca ssp. glauca var. villosa (D. Don ex Hook.) Anderss.
   grayleaf willow
Salix lasiolepis Benth.
   arroyo willow
Salix lasiolepis var. lasiolepis Benth.
   Tracy willow
Salix lemmonii Bebb
   Lemmon's willow
Salix lucida Muhl.
   shining willow
Salix lucida ssp. caudata (Nutt.) E. Murr.
   greenleaf willow
Salix lucida ssp. lasiandra (Benth.) E. Murr.
   Pacific willow
Salix lutea Nutt.
   yellow willow
Salix melanopsis Nutt.
   dusky willow
Salix monochroma Ball
   onecolor willow
Salix monticola Bebb
   park willow
Salix myrtillifolia Anderss.
   blueberry willow
Salix myrtillifolia var. myrtillifolia Anderss.
   blueberry willow
Salix pedicellaris Pursh
   bog willow
Salix planifolia Pursh
   diamondleaf willow
Salix planifolia ssp. planifolia Pursh
   tealeaf willow
Salix prolixa Anderss.
   MacKenzie's willow
Salix pseudomonticola Ball
   false mountain willow
Salix reticulata L.
   netleaf willow
Salix reticulata ssp. nivalis (Hook.) A.& D. Love & Kapoor
   snow willow
Salix scouleriana Barratt ex Hook.
   Scouler's willow
Salix sitchensis Sanson ex Bong.
   Sitka willow
Salix tweedyi (Bebb ex Rose) Ball
   Tweedy's willow
Salix wolfii Bebb
   Wolf's willow

SANTALACEAE
Comandra pallida A. DC.
   = Comandra umbellata ssp. pallida
Comandra umbellata (L.) Nutt.
   bastard toadflax
Comandra umbellata ssp. pallida (A. DC.) Piehl
   pale bastard toadflax
Geocaulon lividum (Richards.) Fern.
   false toadflax

SAXIFRAGACEAE
Bolandra oregana S. Wats.
   northern false coolwort
Boykinia heucheriformis (Rydb.) Rosendahl
   alumroot brookfoam
Boykinia intermedia (Piper) G.N. Jones
   Sierran brookfoam
Boykinia major Gray
   large boykinia
Chrysosplenium tetrandrum (Lund ex Malmgr.) Th. Fries
   northern golden saxifrage
Conimitella williamsii (D.C. Eat.) Rydb.
   Williams' miterwort
Heuchera chlorantha Piper
   tall alumroot
Heuchera cylindrica Dougl. ex Hook.
   roundleaf alumroot
Heuchera cylindrica var. alpina Sw.
   alpine alumroot
Heuchera cylindrica var. cylindrica Dougl. ex Hook.
   roundleaf alumroot
Heuchera cylindrica var. glabella (Torr. & Gray) Wheelock
   beautiful alumroot
Heuchera cylindrica var. orbicularis (Rosendahl, Butters & Lakela) Calder & Savile
   poker alumroot
Heuchera cylindrica var. septentrionalis Rosendahl, Butters & Lakela
   roundleaf alumroot
Heuchera flabellifolia Rydb.
   Bridger Mountain alumroot
Heuchera flabellifolia var. flabellifolia Rydb.
   shortstem alumroot
Heuchera flabellifolia var. subsecta Rosendahl, Butters & Lakela
   Bridger Mountain alumroot
Heuchera grossulariifolia Rydb.
   gooseberryleaf alumroot
Heuchera grossulariifolia var. grossulariifolia Rydb.
   gooseberryleaf alumroot
Heuchera grossulariifolia var. tenuifolia (Wheelock) C.L. Hitchc.
   gooseberryleaf alumroot
Heuchera micrantha Dougl. ex Lindl.
   crevice alumroot
Heuchera micrantha var. micrantha Dougl. ex Lindl.
   crevice alumroot
Heuchera parvifolia Nutt. ex Torr. & Gray
   littleleaf alumroot
Heuchera parvifolia var. utahensis (Rydb.) Garrett
   Utah alumroot
Heuchera rubescens Torr.
   pink alumroot
Heuchera rubescens var. truncata Rosendahl, Butters & Lakela
   pink alumroot
Leptarrhena pyrolifolia (D. Don) R. Br. ex Ser.
   fireleaf leptarrhena
Lithophragma glabrum Nutt.
   bulbous woodlandstar
Lithophragma parviflorum (Hook.) Nutt. ex Torr. & Gray
   smallflower woodlandstar
Lithophragma parviflorum var. parviflorum (Hook.) Nutt. ex Torr. & Gray
   smallflower woodlandstar
Lithophragma tenellum Nutt.
   slender woodlandstar
Mitella breweri Gray
   Brewer's miterwort
Mitella caulescens Nutt.
   slightstemmed miterwort
Mitella pentandra Hook.
   fivestamen miterwort
Mitella stauropetala Piper
   smallflower miterwort
Mitella stauropetala var. stauropetala Piper
   smallflower miterwort
Mitella stauropetala var. stenopetala (Piper) Rosendahl
   drywoods miterwort
Parnassia fimbriata Koenig
   Rocky Mountain parnassia
Parnassia fimbriata var. fimbriata Koenig
   fringed grass of Parnassus
Parnassia fimbriata var. intermedia (Rydb.) C.L. Hitchc.
   intermediate parnassia
Parnassia kotzebuei Cham. ex Spreng.
   Kotzebue's grass of Parnassus
Parnassia parviflora DC.
   smallflower grass of Parnassus
Saxifraga adscendens L.
   wedgeleaf saxifrage
Saxifraga adscendens ssp. oregonensis (Raf.) Bacig.
   small saxifrage
Saxifraga bronchialis L.
   yellowdot saxifrage
Saxifraga bronchialis ssp. austromontana (Wieg.) Piper
   matted saxifrage
Saxifraga bryophora Gray
   bud saxifrage
Saxifraga bryophora var. tobiasiae J. Grimes & Packard
   Tobias' saxifrage
Saxifraga cernua L.
   nodding saxifrage
Saxifraga cespitosa L.
   tufted alpine saxifrage
Saxifraga cespitosa ssp. monticola (Small) Porsild
   tufted alpine saxifrage
Saxifraga ferruginea Graham
   rustyhair saxifrage
Saxifraga ferruginea var. ferruginea Graham
   rustyhair saxifrage
Saxifraga ferruginea var. vreelandii (Small) Engl. & Irmsch.
   Vreeland's saxifrage
Saxifraga hyperborea R. Br.
   pygmy saxifrage
Saxifraga idahoensis Piper
   Idaho saxifrage
Saxifraga lyallii Engl.
   redstem saxifrage
Saxifraga lyallii ssp. lyallii Engl.
   Lyall's saxifrage
Saxifraga marshallii Greene
   Marshall's saxifrage
Saxifraga mertensiana Bong.
   wood saxifrage
Saxifraga nidifica Greene
   peak saxifrage
Saxifraga nidifica var. claytoniifolia (Canby ex Small) Elvander
   peak saxifrage
Saxifraga nidifica var. nidifica Greene
   peak saxifrage
Saxifraga occidentalis S. Wats.
   Alberta saxifrage
Saxifraga odontoloma Piper
   brook saxifrage
Saxifraga oppositifolia L.
   purple mountain saxifrage
Saxifraga oregana T.J. Howell
   Oregon saxifrage
Saxifraga rhomboidea Greene
   diamondleaf saxifrage
Saxifraga rivularis L.
   weak saxifrage
Saxifraga subapetala E. Nels.
   Yellowstone saxifrage
Saxifraga tolmiei Torr. & Gray
   Tolmie's saxifrage
Suksdorfia ranunculifolia (Hook.) Engl.
   buttercup suksdorfia
Suksdorfia violacea Gray
   violet suksdorfia
Tellima grandiflora (Pursh) Dougl. ex Lindl.
   bigflower tellima
Tiarella trifoliata L.
   threeleaf foamflower
Tiarella trifoliata var. trifoliata L.
   threeleaf foamflower
Tiarella trifoliata var. unifoliata (Hook.) Kurtz
   oneleaf foamflower

SCROPHULARIACEAE
Bacopa rotundifolia (Michx.) Wettst.
   disk waterhyssop
Besseya rubra (Dougl. ex Hook.) Rydb.
   red besseya
Besseya wyomingensis (A. Nels.) Rydb.
   Wyoming besseya
Castilleja angustifolia (Nutt.) G. Don
   northwestern Indian paintbrush
Castilleja angustifolia var. angustifolia (Nutt.) G. Don
   northwestern Indian paintbrush
Castilleja angustifolia var. flavescens (Pennell ex Edwin) N. Holmgren
   northwestern Indian paintbrush
Castilleja applegatei Fern.
   wavyleaf Indian paintbrush
Castilleja applegatei ssp. martinii (Abrams) Chuang & Heckard
Castilleja applegatei ssp. pinetorum (Fern.) Chuang & Heckard
Castilleja cervina Greenm.
   deer Indian paintbrush
Castilleja christii N. Holmgren
   Christ's Indian paintbrush
Castilleja covilleana Henderson
   Coville's Indian paintbrush
Castilleja crista-galli Rydb.
   mountainside Indian paintbrush
Castilleja cusickii Greenm.
   Cusick's Indian paintbrush
Castilleja flava S. Wats.
   yellow Indian paintbrush
Castilleja flava var. flava S. Wats.
   yellow Indian paintbrush
Castilleja flava var. rustica (Piper) N. Holmgren
   country Indian paintbrush
Castilleja glandulifera Pennell
   gland Indian paintbrush
Castilleja hispida Benth.
   harsh Indian paintbrush
Castilleja hispida ssp. acuta Pennell
   acute Indian paintbrush
Castilleja hispida ssp. hispida Benth.
   harsh Indian paintbrush
Castilleja linariifolia Benth.
   Wyoming Indian paintbrush
Castilleja lutescens (Greenm.) Rydb.
   yellow Indian paintbrush
Castilleja miniata Dougl. ex Hook.
   scarlet Indian paintbrush
Castilleja miniata var. miniata Dougl. ex Hook.
   green Indian paintbrush
Castilleja minor (Gray) Gray
   lesser Indian paintbrush
Castilleja minor ssp. minor (Gray) Gray
Castilleja occidentalis Torr.
   western Indian paintbrush
Castilleja oresbia Greenm.
   Wallowa Indian paintbrush
Castilleja pallescens (Gray) Greenm.
   pale Indian paintbrush
Castilleja pallescens var. inverta (A. Nels. & J.F. Macbr.) Edwin
   pale Indian paintbrush
Castilleja pallescens var. pallescens (Gray) Greenm.
   pale Indian paintbrush
Castilleja pilosa (S. Wats.) Rydb.
   parrothead Indian paintbrush
Castilleja pilosa var. longispica (A. Nels.) N. Holmgren
   longspike Indian paintbrush
Castilleja pulchella Rydb.
   beautiful Indian paintbrush
Castilleja rhexiifolia Rydb.
   splitleaf Indian paintbrush
Castilleja sulphurea Rydb.
   sulphur Indian paintbrush
Castilleja tenuis (Heller) Chuang & Heckard
   Indian paintbrush
Castilleja viscidula Gray
   sticky Indian paintbrush
Chionophila tweedyi (Canby & Rose) Henderson
   Tweedy's snowlover
Collinsia grandiflora Lindl.
Collinsia parviflora Lindl.
   smallflower blue eyed Mary
Collinsia parviflora var. parviflora Lindl.
   smallflower blue eyed Mary
Cordylanthus capitatus Nutt. ex Benth.
   Yakima bird's beak
Cordylanthus parviflorus (Ferris) Wiggins
   purple bird's beak
Cordylanthus ramosus Nutt. ex Benth.
   bushy bird's beak
Gratiola ebracteata Benth. ex A. DC.
   bractless hedgehyssop
Gratiola neglecta Torr.
   clammy hedgehyssop
Limosella aquatica L.
   water mudwort
Linaria dalmatica (L.) P. Mill.
   Dalmatian toadflax
Linaria dalmatica ssp. dalmatica (L.) P. Mill.
   Dalmatian toadflax
Linaria vulgaris P. Mill.
   butter and eggs
Lindernia dubia (L.) Pennell
   moistbank pimpernel
Lindernia dubia var. anagallidea (Michx.) Cooperrider
   yellowseed false pimpernel
Lindernia dubia var. dubia (L.) Pennell
   yellowseed false pimpernel
Melampyrum lineare Desr.
   narrowleaf cowwheat
Melampyrum lineare var. lineare Desr.
   American cowwheat
Mimetanthe pilosa (Benth.) Greene
   false monkeyflower
Mimulus breviflorus Piper
   shortflower monkeyflower
Mimulus breweri (Greene) Coville
   Brewer's monkeyflower
Mimulus clivicola Greenm.
   North Idaho monkeyflower
Mimulus cusickii (Greene) Rattan
   Cusick's monkeyflower
Mimulus floribundus Lindl.
   manyflowered monkeyflower
Mimulus guttatus DC.
   seep monkeyflower
Mimulus lewisii Pursh
   purple monkeyflower
Mimulus moschatus Dougl. ex Lindl.
   musk monkeyflower
Mimulus moschatus var. moschatus Dougl. ex Lindl.
   muskflower
Mimulus nanus Hook. & Arn.
   dwarf purple monkeyflower
Mimulus nanus ssp. nanus Hook. & Arn.
   dwarf purple monkeyflower
Mimulus primuloides Benth.
   primrose monkeyflower
Mimulus primuloides var. primuloides Benth.
   primrose monkeyflower
Mimulus ringens L.
   ringen monkeyflower
Mimulus ringens var. ringens L.
   Allegheny monkeyflower
Mimulus suksdorfii Gray
   Suksdorf's monkeyflower
Mimulus tilingii Regel
   Tiling's monkeyflower
Mimulus tilingii var. caespitosus (Greene) A.L. Grant
   subalpine monkeyflower
Mimulus tilingii var. tilingii Regel
   Tiling's monkeyflower
Mimulus washingtonensis Gandog.
   Washington monkeyflower
Misopates orontium (L.) Raf.
   linearleaf snapdragon
Orthocarpus luteus Nutt.
   yellow owlclover
Orthocarpus tenuifolius (Pursh) Benth.
   thinleaved owlclover
Orthocarpus tolmiei Hook. & Arn.
   Tolmie's owlclover
Pedicularis bracteosa Benth.
   bracted lousewort
Pedicularis bracteosa var. bracteosa Benth.
   bracted lousewort
Pedicularis bracteosa var. canbyi (Gray) Cronq.
   Canby's lousewort
Pedicularis bracteosa var. latifolia (Pennell) Cronq.
   widepetal lousewort
Pedicularis bracteosa var. paysoniana (Pennell) Cronq.
   Payson's lousewort
Pedicularis bracteosa var. siifolia (Rydb.) Cronq.
   smoothflower lousewort
Pedicularis contorta Benth.
   coiled lousewort
Pedicularis contorta var. contorta Benth.
   coiled lousewort
Pedicularis contorta var. ctenophora (Rydb.) A. Nels. & J.F. Macbr.
   coiled lousewort
Pedicularis contorta var. rubicunda N. Reese
   coiled lousewort
Pedicularis groenlandica Retz.
   elephanthead lousewort
Pedicularis groenlandica ssp. surrecta (Benth.) Piper
   Greenland lousewort
Pedicularis parryi Gray
   Parry's lousewort
Pedicularis parryi ssp. purpurea (Parry) G.D. Carr
   Rocky Mountain lousewort
Pedicularis racemosa Dougl. ex Benth.
   sickletop lousewort
Pedicularis racemosa ssp. alba Pennell
   sickletop lousewort
Penstemon acuminatus Dougl. ex Lindl.
   sharpleaf penstemon
Penstemon acuminatus var. acuminatus Dougl. ex Lindl.
   sharpleaf penstemon
Penstemon albertinus Greene
   Alberta beardtongue
Penstemon aridus Rydb.
   stiffleaf penstemon
Penstemon attenuatus Dougl. ex Lindl.
   sulphur penstemon
Penstemon attenuatus var. attenuatus Dougl. ex Lindl.
   sulphur penstemon
Penstemon attenuatus var. militaris (Greene) Cronq.
   South Idaho penstemon
Penstemon attenuatus var. pseudoprocerus (Rydb.) Cronq.
   small penstemon
Penstemon compactus (Keck) Crosswhite
   compact penstemon
Penstemon confertus Dougl. ex Lindl.
   yellow penstemon
Penstemon cusickii Gray
   Cusick's beardtongue
Penstemon cyananthus Hook.
   Wasatch beardtongue
Penstemon cyananthus var. cyananthus Hook.
   Wasatch beardtongue
Penstemon cyananthus var. subglaber (Gray) N. Holmgren
   Wasatch beardtongue
Penstemon cyaneus Pennell
   blue penstemon
Penstemon davidsonii Greene
   Davidson's penstemon
Penstemon davidsonii var. menziesii (Keck) Cronq.
   Menzies' penstemon
Penstemon deustus Dougl. ex Lindl.
   scabland penstemon
Penstemon deustus var. deustus Dougl. ex Lindl.
   hotrock beardtongue
Penstemon diphyllus Rydb.
   twoleaf beardtongue
Penstemon elegantulus Pennell
   rockvine penstemon
Penstemon ellipticus Coult. & Fisher
   rocky ledge penstemon
Penstemon eriantherus Pursh
   fuzzytongue penstemon
Penstemon eriantherus var. eriantherus Pursh
   fuzzytongue penstemon
Penstemon eriantherus var. redactus Pennell & Keck
   longsac penstemon
Penstemon flavescens Pennell
   high mountain penstemon
Penstemon fruticosus (Pursh) Greene
   bush penstemon
Penstemon fruticosus var. fruticosus (Pursh) Greene
   shrubby penstemon
Penstemon fruticosus var. scouleri (Lindl.) Cronq.
   littleleaf bush penstemon
Penstemon fruticosus var. serratus (Keck) Cronq.
   sawleaf bush penstemon
Penstemon gairdneri Hook.
   Gairdner's beardtongue
Penstemon gairdneri var. oreganus Gray
   Gairdner's beardtongue
Penstemon glandulosus Dougl.
   stickystem penstemon
Penstemon glandulosus var. glandulosus Dougl.
   stickystem penstemon
Penstemon globosus (Piper) Pennell & Keck
   globe penstemon
Penstemon humilis Nutt. ex Gray
   low penstemon
Penstemon humilis ssp. brevifolius (Gray) Keck
   low beardtongue
Penstemon humilis ssp. humilis Nutt. ex Gray
   low beardtongue
Penstemon idahoensis Atwood & Welsh
   Idaho beardtongue
Penstemon janishiae N. Holmgren
   Antelope Valley beardtongue
Penstemon laxus A. Nels.
   tufted penstemon
Penstemon lemhiensis (Keck) Keck & Cronq.
   Lemhi penstemon
Penstemon leonardii Rydb.
   Leonard's beardtongue
Penstemon leonardii var. leonardii Rydb.
   Leonard's beardtongue
Penstemon lyallii (Gray) Gray
   Lyall's beardtongue
Penstemon miser Gray
   Malheur penstemon
Penstemon montanus Greene
   mountain penstemon
Penstemon montanus var. idahoensis (Pennell & Keck) Cronq.
   Central Idaho penstemon
Penstemon montanus var. montanus Greene
   cordroot beardtongue
Penstemon nitidus Dougl. ex Benth.
   waxleaf penstemon
Penstemon nitidus var. polyphyllus (Pennell) Cronq.
   waxleaf penstemon
Penstemon palmeri Gray
   Palmer's penstemon
Penstemon palmeri var. palmeri Gray
   Palmer's penstemon
Penstemon payettensis A. Nels. & J.F. Macbr.
   Payette beardtongue
Penstemon perpulcher A. Nels.
   Minidoka beardtongue
Penstemon pratensis Greene
   western whiteflower beardtongue
Penstemon procerus Dougl. ex Graham
   littleflower penstemon
Penstemon procerus var. formosus (A. Nels.) Cronq.
   pincushion beardtongue
Penstemon pumilus Nutt.
   Salmon River beardtongue
Penstemon radicosus A. Nels.
   matroot penstemon
Penstemon rydbergii A. Nels.
   Rydberg's penstemon
Penstemon rydbergii var. aggregatus (Pennell) N. Holmgren
   meadow beardtongue
Penstemon rydbergii var. oreocharis (Greene) N. Holmgren
   herbaceous penstemon
Penstemon rydbergii var. rydbergii A. Nels.
   swollen penstemon
Penstemon seorsus (A. Nels.) Keck
   shortlobe penstemon
Penstemon speciosus Dougl. ex Lindl.
   royal penstemon
Penstemon subglaber Rydb.
   smooth penstemon
Penstemon triphyllus Dougl. ex Lindl.
   Riggin's penstemon
Penstemon venustus Dougl. ex Lindl.
   Venus penstemon
Penstemon watsonii Gray
   Watson's penstemon
Penstemon whippleanus Gray
   Whipple's penstemon
Penstemon wilcoxii Rydb.
   Wilcox's penstemon
Rhinanthus minor L.
   little yellowrattle
Rhinanthus minor ssp. minor L.
   cockscomb rhinanthus
Sairocarpus kingii (S. Wats.) D.A. Sutton
   King's snapdragon
Scrophularia lanceolata Pursh
   lanceleaf figwort
Synthyris missurica (Raf.) Pennell
   tailed kittenstails
Synthyris missurica ssp. missurica (Raf.) Pennell
   tailed kittenstails
Synthyris pinnatifida S. Wats.
   featherleaf kittenstails
Synthyris pinnatifida var. canescens (Pennell) Cronq.
   hairy kittenstails
Synthyris pinnatifida var. pinnatifida S. Wats.
   featherleaf kittenstails
Synthyris platycarpa Gail & Pennell
   Idaho kittenstails
Tonella floribunda Gray
   manyflower tonella
Verbascum blattaria L.
   moth mullein
Verbascum thapsus L.
   common mullein
Veronica americana Schwein. ex Benth.
   American speedwell
Veronica anagallis-aquatica L.
   water speedwell
Veronica arvensis L.
   corn speedwell
Veronica biloba L.
   twolobe speedwell
Veronica chamaedrys L.
   germander speedwell
Veronica cusickii Gray
   Cusick's speedwell
Veronica peregrina L.
   neckweed
Veronica peregrina ssp. xalapensis (Kunth) Pennell
   hairy purslane speedwell
Veronica persica Poir.
   birdeye speedwell
Veronica scutellata L.
   skullcap speedwell
Veronica serpyllifolia L.
   thymeleaf speedwell
Veronica serpyllifolia ssp. humifusa (Dickson) Syme
   brightblue speedwell
Veronica wormskjoldii Roemer & J.A. Schultes
   American alpine speedwell

SELAGINELLACEAE
Selaginella densa Rydb.
   lesser spikemoss
Selaginella densa var. densa Rydb.
   dense spikemoss
Selaginella densa var. scopulorum (Maxon) R. Tryon
   Rocky Mountain spikemoss
Selaginella densa var. standleyi (Maxon) R. Tryon
   Standley's spikemoss
Selaginella douglasii (Hook. & Grev.) Spring
   Douglas' spikemoss
Selaginella selaginoides (L.) Beauv. ex Mart. & Schrank
   club spikemoss
Selaginella wallacei Hieron.
   Wallace's spikemoss
Selaginella watsonii Underwood
   Watson's spikemoss

SIMAROUBACEAE
Ailanthus altissima (P. Mill.) Swingle
   tree of heaven

SOLANACEAE
Datura inoxia P. Mill.
   pricklyburr
Hyoscyamus niger L.
   black henbane
Lycium barbarum L.
   matrimonyvine
Nicandra physalodes (L.) Gaertn.
   apple of Peru
Nicotiana attenuata Torr. ex S. Wats.
   coyote tobacco
Nicotiana quadrivalvis Pursh
   Indian tobacco
Nicotiana quadrivalvis var. quadrivalvis Pursh
   Indian tobacco
Physalis heterophylla Nees
   clammy groundcherry
Physalis longifolia Nutt.
   longleaf groundcherry
Physalis longifolia var. subglabrata (Mackenzie & Bush) Cronq.
   longleaf groundcherry
Physalis philadelphica Lam.
   Mexican groundcherry
Physalis philadelphica var. immaculata Waterfall
   Mexican groundcherry
Solanum carolinense L.
   Carolina horsenettle
Solanum carolinense var. carolinense L.
   Carolina horsenettle
Solanum dulcamara L.
   climbing nightshade
Solanum interius Rydb.
   deadly nightshade
Solanum nigrum L.
   black nightshade
Solanum physalifolium Rusby
   hoe nightshade
Solanum rostratum Dunal
   buffalobur nightshade
Solanum triflorum Nutt.
   cutleaf nightshade

TAXACEAE
Taxus brevifolia Nutt.
   Pacific yew

THELYPTERIDACEAE
Thelypteris nevadensis (Baker) Clute ex Morton
   Sierran marsh fern

ULMACEAE
Celtis douglasii Planch.
   = Celtis laevigata var. reticulata
Celtis laevigata Willd.
   sugarberry
Celtis laevigata var. reticulata (Torr.) L. Benson
   netleaf hackberry
Celtis occidentalis var. reticulata (Torr.) Sarg.
   = Celtis laevigata var. reticulata

UMBELLIFERAE
Angelica arguta Nutt.
   Lyall's angelica
Angelica dawsonii S. Wats.
   Dawson's angelica
Angelica kingii (S. Wats.) Coult. & Rose
   King's angelica
Angelica pinnata S. Wats.
   smallleaf angelica
Angelica roseana Henderson
   rose angelica
Apium graveolens L.
   wild celery
Berula erecta (Huds.) Coville
   cutleaf waterparsnip
Bupleurum americanum Coult. & Rose
   American thorow wax
Carum carvi L.
   caraway
Cicuta bulbifera L.
   bulblet bearing water hemlock
Cicuta douglasii (DC.) Coult. & Rose
   western water hemlock
Conium maculatum L.
   poison hemlock
Cymopterus acaulis (Pursh) Raf.
   plains springparsley
Cymopterus acaulis var. acaulis (Pursh) Raf.
   plains springparsley
Cymopterus acaulis var. greeleyorum J. Grimes & Packard
   Greeley springparsley
Cymopterus corrugatus M.E. Jones
   wrinklewing springparsley
Cymopterus davisii Hartman
   Davis' springparsley
Cymopterus douglassii Hartman & Constance
   Douglass' springparsley
Cymopterus glaucus Nutt.
   waxy springparsley
Cymopterus ibapensis M.E. Jones
   Ibapah springparsley
Cymopterus longipes S. Wats.
   longstalk springparsley
Cymopterus nivalis S. Wats.
   snowline springparsley
Cymopterus purpurascens (Gray) M.E. Jones
   widewing springparsley
Cymopterus terebinthinus var. albiflorus (Torr. & Gray) M.E. Jones
   = Pteryxia terebinthina var. albiflora
Daucus carota L.
   Queen Anne's lace
Daucus pusillus Michx.
   American wild carrot
Eryngium alismifolium Greene
   Modoc eryngo
Eryngium articulatum Hook.
   beethistle
Heracleum lanatum Michx.
   = Heracleum maximum
Heracleum maximum Bartr.
   common cowparsnip
Leptotaenia dissecta Nutt.
   = Lomatium dissectum var. dissectum
Leptotaenia multifida Nutt.
   = Lomatium dissectum var. multifidum
Ligusticum canbyi Coult. & Rose
   Canby's licoriceroot
Ligusticum filicinum S. Wats.
   fernleaf licoriceroot
Ligusticum grayi Coult. & Rose
   Gray's licoriceroot
Ligusticum tenuifolium S. Wats.
   Idaho licoriceroot
Ligusticum verticillatum (Hook.) Coult. & Rose ex Rose
   northern licoriceroot
Lomatium ambiguum (Nutt.) Coult. & Rose
   Wyeth biscuitroot
Lomatium bicolor (S. Wats.) Coult. & Rose
   Wasatch desertparsley
Lomatium bicolor var. bicolor (S. Wats.) Coult. & Rose
   Wasatch desertparsley
Lomatium bicolor var. leptocarpum (Torr. & Gray) Schlessman
   Wasatch desertparsley
Lomatium canbyi (Coult. & Rose) Coult. & Rose
   Canby's biscuitroot
Lomatium cous (S. Wats.) Coult. & Rose
   cous biscuitroot
Lomatium cusickii (S. Wats.) Coult. & Rose
   Cusick's biscuitroot
Lomatium dissectum (Nutt.) Mathias & Constance
   fernleaf buscuitroot
Lomatium dissectum var. dissectum (Nutt.) Mathias & Constance
   fernleaf biscuitroot
Lomatium dissectum var. multifidum (Nutt.) Mathias & Constance
   carrotleaf biscuitroot
Lomatium donnellii (Coult. & Rose) Coult. & Rose
   Donnell's biscuitroot
Lomatium farinosum (Hook.) Coult. & Rose
   northern biscuitroot
Lomatium farinosum var. farinosum (Hook.) Coult. & Rose
   northern biscuitroot
Lomatium foeniculaceum (Nutt.) Coult. & Rose
   desert biscuitroot
Lomatium foeniculaceum ssp. macdougalii (Coult. & Rose) Theobald
   Macdougal's biscuitroot
Lomatium geyeri (S. Wats.) Coult. & Rose
   Geyer's biscuitroot
Lomatium gormanii (T.J. Howell) Coult. & Rose
   Gorman's biscuitroot
Lomatium grayi (Coult. & Rose) Coult. & Rose
   Gray's biscuitroot
Lomatium hendersonii (Coult. & Rose) Coult. & Rose
   Henderson's biscuitroot
Lomatium idahoense Mathias & Constance
   Idaho biscuitroot
Lomatium juniperinum (M.E. Jones) Coult. & Rose
   juniper biscuitroot
Lomatium macrocarpum (Nutt. ex Torr. & Gray) Coult. & Rose
   bigseed biscuitroot
Lomatium nudicaule (Pursh) Coult. & Rose
   barestem biscuitroot
Lomatium nuttallii (Gray) J.F. Macbr.
   Nuttall's biscuitroot
Lomatium orientale Coult. & Rose
   Northern Idaho biscuitroot
Lomatium piperi Coult. & Rose
   Indian biscuitroot
Lomatium rollinsii Mathias & Constance
   Rollins' biscuitroot
Lomatium salmoniflorum (Coult. & Rose) Mathias & Constance
   salmonflower biscuitroot
Lomatium sandbergii (Coult. & Rose) Coult. & Rose
   Sandberg's biscuitroot
Lomatium serpentinum (M.E. Jones) Mathias
   sweetscented biscuitroot
Lomatium simplex (Nutt.) J.F. Macbr.
   narrowleaf lomatium
Lomatium simplex var. leptophyllum (Hook.) Mathias
   narrowleaf lomatium
Lomatium simplex var. simplex (Nutt.) J.F. Macbr.
   Great Basin desertparsley
Lomatium triternatum (Pursh) Coult. & Rose
   nineleaf biscuitroot
Lomatium triternatum var. anomalum (M.E. Jones ex Coult. & Rose) Mathias
   broadnineleaf biscuitroot
Lomatium triternatum var. macrocarpum (Coult. & Rose) Mathias
   nineleaf biscuitroot
Lomatium triternatum var. triternatum (Pursh) Coult. & Rose
   nineleaf biscuitroot
Musineon divaricatum (Pursh) Raf.
   leafy wildparsley
Musineon divaricatum var. hookeri (Torr. & Gray) Mathias
   Hooker's wildparsley
Orogenia fusiformis S. Wats.
   California Indian potato
Orogenia linearifolia S. Wats.
   Great Basin Indian potato
Osmorhiza berteroi DC.
   sweetcicely
Osmorhiza brevipes (Coult. & Rose) Suksdorf
   = Osmorhiza berteroi
Osmorhiza chilensis Hook. & Arn.
   = Osmorhiza berteroi
Osmorhiza depauperata Phil.
   bluntseed sweetroot
Osmorhiza occidentalis (Nutt. ex Torr. & Gray) Torr.
   western sweetroot
Osmorhiza purpurea (Coult. & Rose) Suksdorf
   purple sweetroot
Pastinaca sativa L.
   wild parsnip
Perideridia bolanderi (Gray) A. Nels. & J.F. Macbr.
   Bolander's yampah
Perideridia bolanderi ssp. bolanderi (Gray) A. Nels. & J.F. Macbr.
   Bolander's yampah
Perideridia gairdneri (Hook. & Arn.) Mathias
   yampa
Perideridia gairdneri ssp. borealis Chuang & Constance
   common yampah
Perideridia parishii (Coult. & Rose) A. Nels. & J.F. Macbr.
   Parish's yampah
Pteryxia hendersonii (Coult. & Rose) Mathias & Constance
   Henderson's desertparsley
Pteryxia petraea (M.E. Jones) Coult. & Rose
   rockloving desertparsley
Pteryxia terebinthina (Hook.) Coult. & Rose
   smoothshore springparsley
Pteryxia terebinthina var. albiflora (Torr. & Gray) Mathias
   smoothshore springparsley
Pteryxia terebinthina var. foeniculacea (Nutt. ex Torr. & Gray) Mathias
   turpentine wavewing
Sanicula graveolens Poepp. ex DC.
   northern sanicle
Sanicula marilandica L.
   Maryland sanicle
Sium suave Walt.
   hemlock waterparsnip
Sphenosciadium capitellatum Gray
   woollyhead parsnip
Tauschia tenuissima (Geyer ex Hook.) Mathias & Constance
   Leiberg's umbrellawort
Yabea microcarpa (Hook. & Arn.) K.-Pol.
   falsecarrot
Zizia aptera (Gray) Fern.
   meadow zizia

URTICACEAE
Parietaria L.
   pellitory
Parietaria pensylvanica Muhl. ex Willd.
   Pennsylvania pellitory
Urtica dioica L.
   stinging nettle
Urtica dioica ssp. gracilis (Ait.) Seland.
   California nettle
Urtica dioica ssp. holosericea (Nutt.) Thorne
   stinging nettle
Urtica gracilis Ait.
   = Urtica dioica ssp. gracilis
Urtica holosericea Nutt.
   = Urtica dioica ssp. holosericea
Urtica lyallii S. Wats.
   = Urtica dioica ssp. gracilis

VALERIANACEAE
Plectritis macrocera Torr. & Gray
   longhorn plectritis
Plectritis macrocera ssp. grayi (Suksdorf) Morey
   Gray's seablush
Plectritis macrocera ssp. macrocera Torr. & Gray
   white seablush
Valeriana acutiloba Rydb.
   sharpleaf valerian
Valeriana acutiloba var. pubicarpa (Rydb.) Cronq.
   hairyfruit valerian
Valeriana dioica L.
   marsh valerian
Valeriana dioica var. sylvatica S. Wats.
   woods valerian
Valeriana edulis Nutt. ex Torr. & Gray
   edible valerian
Valeriana edulis var. edulis Nutt. ex Torr. & Gray
   tobacco root
Valeriana occidentalis Heller
   western valerian
Valeriana officinalis L.
   garden valerian
Valeriana sitchensis Bong.
   Sitka valerian
Valerianella carinata Loisel.
   European cornsalad
Valerianella locusta (L.) Lat.
   Lewiston cornsalad

VIOLACEAE
Viola adunca Sm.
   hookedspur violet
Viola adunca var. adunca Sm.
   hookedspur violet
Viola affinis Le Conte
   sand violet
Viola arvensis Murr.
   field pansy
Viola beckwithii Torr. & Gray
   Beckwith's violet
Viola beckwithii ssp. beckwithii Torr. & Gray
   Beckwith's violet
Viola bicolor Pursh
   field pansy
Viola canadensis L.
   Canadian white violet
Viola canadensis var. rugulosa (Greene) C.L. Hitchc.
   creepingroot violet
Viola glabella Nutt.
   pioneer violet
Viola macloskeyi Lloyd
   small white violet
Viola nephrophylla var. nephrophylla Greene
   northern bog violet
Viola nuttallii Pursh
   Nuttall's violet
Viola orbiculata Geyer ex Holz.
   darkwoods violet
Viola palustris L.
   marsh violet
Viola palustris var. brevipes (M.S. Baker) R.J. Davis
   marsh violet
Viola palustris var. palustris L.
   marsh violet
Viola praemorsa Dougl. ex Lindl.
   canary violet
Viola praemorsa ssp. linguifolia (Nutt.) M.S. Baker & J.C. Clausen ex M.E. Peck
   upland yellow violet
Viola purpurea Kellogg
   goosefoot violet
Viola purpurea ssp. venosa (S. Wats.) M.S. Baker & J.C. Clausen
   goosefoot yellow violet
Viola renifolia Gray
   white violet
Viola sempervirens Greene
   evergreen violet
Viola sheltonii Torr.
   Shelton's violet
Viola sororia Willd.
   common blue violet
Viola utahensis M.S. Baker & J.C. Clausen ex Baker
   Utah violet
Viola vallicola A. Nels.
   valley violet
Viola vallicola var. major (Hook.) Fabijan
   valley violet
Viola vallicola var. vallicola A. Nels.
   sagebrush violet

VISCACEAE
Arceuthobium americanum Nutt. ex Engelm.
   American dwarf mistletoe
Arceuthobium campylopodum Engelm.
   western dwarf mistletoe
Arceuthobium cyanocarpum (A. Nels. ex Rydb.) A. Nels.
   limber pine dwarf mistletoe
Arceuthobium douglasii Engelm.
   Douglas fir dwarf mistletoe
Arceuthobium laricis (Piper) St. John
   larch dwarf mistletoe
Arceuthobium tsugense (Rosendahl) G.N. Jones
   hemlock dwarf mistletoe

ZANNICHELLIACEAE
Zannichellia palustris L.
   horned pondweed

ZYGOPHYLLACEAE
Tribulus terrestris L.
   puncturevine
Zygophyllum fabago L.
   Syrian beancaper