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