Checklist of the vascular plants of MONTANA (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 ACORACEAE Acorus americanus (Raf.) Raf. sweetflag Acorus calamus auct. non L. = Acorus americanus ADOXACEAE Adoxa moschatellina L. muskroot AGAVACEAE Yucca glauca Nutt. small soapweed Yucca glauca var. glauca Nutt. soapweed yucca ALISMATACEAE Alisma gramineum Lej. narrowleaf water plantain Alisma triviale Pursh northern water plantain Sagittaria latifolia Willd. broadleaf arrowhead Sagittaria latifolia var. latifolia Willd. broadleaf arrowhead AMARANTHACEAE Amaranthus albus L. prostrate pigweed Amaranthus arenicola I.M. Johnston sandhill amaranth Amaranthus blitoides S. Wats. mat amaranth Amaranthus hybridus L. slim amaranth Amaranthus powellii S. Wats. Powell's amaranth Amaranthus retroflexus L. redroot 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 Apocynum suksdorfii Greene = 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 incarnata L. swamp milkweed Asclepias pumila (Gray) Vail plains milkweed Asclepias speciosa Torr. showy milkweed Asclepias stenophylla Gray slimleaf milkweed Asclepias syriaca L. common milkweed Asclepias verticillata L. whorled milkweed Asclepias viridiflora Raf. green milkweed ASPLENIACEAE Asplenium trichomanes L. maidenhair spleenwort Asplenium trichomanes-ramosum L. brightgreen spleenwort BALSAMINACEAE Impatiens aurella Rydb. paleyellow touchmenot Impatiens ecalcarata Blank. spurless touchmenot BERBERIDACEAE Berberis aquifolium Pursh = Mahonia aquifolium Berberis repens Lindl. = Mahonia repens Berberis vulgaris L. common barberry Mahonia aquifolium (Pursh) Nutt. hollyleaved barberry Mahonia repens (Lindl.) G. Don Oregongrape BETULACEAE Alnus incana (L.) Moench mountain alder Alnus incana ssp. tenuifolia (Nutt.) Breitung thinleaf alder Alnus viridis (Vill.) Lam. & DC. sitka alder Alnus viridis ssp. sinuata (Regel) A.& D. Love Sitka alder Betula X utahensis Britt. (pro sp.) northwestern paper birch Betula nana L. bog birch Betula occidentalis Hook. water birch Betula papyrifera Marsh. paper birch Betula papyrifera var. commutata (Regel) Fern. western paper birch BORAGINACEAE Amsinckia lycopsoides Lehm. tarweed fiddleneck Amsinckia menziesii (Lehm.) A. Nels. & J.F. Macbr. Menzies' fiddleneck Anchusa arvensis (L.) Bieb. small bugloss Anchusa azurea P. Mill. Italian bugloss Anchusa officinalis L. common bugloss Asperugo procumbens L. madwort Borago officinalis L. common borage Buglossoides arvensis (L.) I.M. Johnston corn gromwell Cryptantha affinis (Gray) Greene quill catseye Cryptantha ambigua (Gray) Greene basin catseye Cryptantha cana (A. Nels.) Payson mountain catseye Cryptantha celosioides (Eastw.) Payson buttecandle Cryptantha cinerea (Greene) Cronq. James' catseye Cryptantha cinerea var. jamesii Cronq. James' catseye Cryptantha fendleri (Gray) Greene sanddune catseye Cryptantha flavoculata (A. Nels.) Payson roughseed catseye Cryptantha humilis (Gray) Payson roundspike catseye Cryptantha kelseyana Greene Kelsey's catseye Cryptantha minima Rydb. little catseye Cryptantha sericea (Gray) Payson silky 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 Echium vulgare L. common vipersbugloss Eritrichium howardii (Gray) Rydb. Howard's alpine forget me not 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 cinerea (Piper) I.M. Johnston gray stickseed Hackelia deflexa (Wahlenb.) Opiz nodding stickseed Hackelia deflexa var. americana (Gray) Fern. & I.M. Johnston American stickseed Hackelia floribunda (Lehm.) I.M. Johnston manyflower stickseed Hackelia micrantha (Eastw.) J.L. Gentry Jessica sticktight Hackelia patens (Nutt.) I.M. Johnston common stickseed Hackelia patens var. patens (Nutt.) I.M. Johnston spotted stickseed Heliotropium curassavicum L. salt heliotrope Lappula cenchrusoides A. Nels. Great Plains stickseed Lappula occidentalis (S. Wats.) Greene flatspine stickseed Lappula occidentalis var. cupulata (Gray) Higgins flatspine stickseed Lappula occidentalis var. occidentalis (S. Wats.) Greene desert stickseed Lappula squarrosa (Retz.) Dumort. European stickseed Lithospermum arvense L. = Buglossoides arvensis Lithospermum caroliniense (Walt. ex J.F. Gmel.) MacM. hairy puccoon Lithospermum incisum Lehm. narrowleaf gromwell Lithospermum ruderale Dougl. ex Lehm. western gromwell Mertensia alpina (Torr.) G. Don alpine bluebells Mertensia bella Piper beautiful bluebells Mertensia ciliata (James ex Torr.) G. Don mountain bluebells Mertensia ciliata var. ciliata (James ex Torr.) G. Don tall fringe 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 arvensis (L.) Hill field forget me not 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 Onosmodium molle Michx. smooth onosmodium Onosmodium molle ssp. occidentale (Mackenzie) Cochrane western onosmodium Plagiobothrys leptocladus (Greene) I.M. Johnston finebranched popcornflower Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnston Scouler's popcornflower Plagiobothrys scouleri var. hispidulus (Greene) Dorn sleeping popcornflower Pulmonaria ciliata James ex Torr. = Mertensia ciliata var. ciliata Symphytum officinale L. common comfrey 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 Opuntia fragilis (Nutt.) Haw. brittle pricklypear Opuntia fragilis var. fragilis (Nutt.) Haw. pygmy pricklypear Opuntia humifusa (Raf.) Raf. pricklypear Opuntia humifusa var. humifusa (Raf.) Raf. 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. 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 Callitriche stagnalis Scop. pond waterstarwort CAMPANULACEAE Campanula glomerata L. Dane's blood Campanula parryi Gray Parry's bellflower Campanula parryi var. idahoensis McVaugh Idaho bellflower Campanula rapunculoides L. rampion bellflower Campanula rotundifolia L. bluebell bellflower Campanula scabrella Engelm. rough bellflower Campanula uniflora L. arctic bellflower Downingia laeta (Greene) Greene Great Basin calicoflower Heterocodon rariflorum Nutt. rareflower heterocodon Howellia aquatilis Gray water howellia Lobelia kalmii L. Ontario lobelia Lobelia spicata Lam. palespike lobelia Triodanis leptocarpa (Nutt.) Nieuwl. slimpod Venus' lookingglass 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 Humulus lupulus var. neomexicanus A. Nels. & Cockerell common hop CAPPARACEAE Cleome lutea Hook. yellow spiderflower Cleome lutea var. lutea Hook. yellow spiderflower Cleome serrulata Pursh Rocky Mountain beeplant 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 involucrata Banks ex Spreng. twinberry honeysuckle Lonicera tatarica L. Tatarian honeysuckle Lonicera utahensis S. Wats. Utah honeysuckle Sambucus canadensis L. = Sambucus nigra ssp. canadensis Sambucus cerulea Raf. = Sambucus nigra ssp. cerulea Sambucus cerulea var. cerulea Raf. blue elderberry Sambucus mexicana K. Presl ex DC. = Sambucus nigra ssp. canadensis Sambucus nigra L. European black elder Sambucus nigra ssp. canadensis (L.) R. Bolli Sambucus nigra ssp. cerulea (Raf.) R. Bolli Sambucus racemosa L. scarlet elderberry Sambucus racemosa ssp. pubens var. melanocarpa (Gray) McMinn black elderberry Sambucus racemosa var. racemosa L. Symphoricarpos albus (L.) Blake common snowberry Symphoricarpos albus var. albus (L.) Blake common snowberry Symphoricarpos albus var. laevigatus (Fern.) Blake common 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 lentago L. nannyberry 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. congesta Nutt. ballhead sandwort Arenaria congesta var. lithophila (Rydb.) Maguire loosehead sandwort Arenaria hookeri Nutt. Hooker's sandwort Arenaria hookeri ssp. hookeri Nutt. Hooker's sandwort Arenaria kingii (S. Wats.) M.E. Jones King's sandwort Arenaria serpyllifolia L. thymeleaf sandwort Cerastium arvense L. field chickweed Cerastium arvense ssp. strictum (L.) Ugborogho 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 Dianthus barbatus L. sweetwilliam Dianthus deltoides L. maiden pink Gypsophila paniculata L. babysbreath gypsophila Holosteum umbellatum L. jagged chickweed Lychnis coronaria (L.) Desr. rose campion Lychnis flos-cuculi L. ragged robin Minuartia biflora (L.) Schinz & Thellung mountain stitchwort 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 rossii (R. Br. ex Richards.) Graebn. Ross' sandwort Minuartia rubella (Wahlenb.) Hiern beautiful sandwort Minuartia yukonensis Hulten Yukon stitchwort Moehringia lateriflora (L.) Fenzl bluntleaf sandwort Moehringia macrophylla (Hook.) Fenzl largeleaf sandwort Paronychia sessiliflora Nutt. creeping nailwort Sagina nivalis (Lindbl.) Fries snow pearlwort Sagina procumbens L. birdeye pearlwort Sagina saginoides (L.) Karst. arctic pearlwort Saponaria officinalis L. bouncingbet Scleranthus annuus L. German knotgrass Silene acaulis (L.) Jacq. moss campion Silene acaulis var. exscapa (All.) DC. moss campion Silene acaulis var. subacaulescens (F.N. Williams) Fern. & St. John moss campion Silene antirrhina L. sleepy silene Silene conoidea L. weed silene Silene csereii Baumg. Balkan catchfly 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. kruckebergii Bocquet Kruckeberg's campion Silene kingii (S. Wats.) Bocquet King'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 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 uralensis ssp. uralensis (Rupr.) Bocquet mountain campion Silene vulgaris (Moench) Garcke maidenstears Spergula arvense L. corn spurry Spergularia (Pers.) J.& K. Presl 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 americana (Porter ex B.L. Robins.) Standl. American chickweed 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 longifolia var. 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 Celastrus scandens L. American bittersweet Euonymus alata (Thunb.) Sieb. winged spindletree Euonymus atropurpurea Jacq. eastern wahoo Paxistima myrsinites (Pursh) Raf. boxleaf myrtle CERATOPHYLLACEAE Ceratophyllum demersum L. coon's tail CHENOPODIACEAE Atriplex X aptera A. Nels. (pro sp.) fourwing saltbush Atriplex argentea Nutt. silverscale saltbush Atriplex argentea ssp. 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 micrantha Ledeb. twoscale saltbush Atriplex nuttallii S. Wats. Nuttall's saltbush Atriplex patula L. spear saltbush Atriplex powellii S. Wats. Powell's saltweed Atriplex prostrata Boucher ex DC. triangle orache Atriplex rosea L. tumbling saltweed Atriplex truncata (Torr. ex S. Wats.) Gray wedgescale saltbush Axyris amaranthoides L. Russian pigweed Bassia hyssopifolia (Pallas) Kuntz fivehorn smotherweed Beta vulgaris L. common beet 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 fremontii S. Wats. Fremont's goosefoot Chenopodium fremontii var. fremontii S. Wats. Fremont's goosefoot Chenopodium glaucum L. oakleaf 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 simplex (Torr.) Raf. mapleleaf goosefoot Chenopodium standleyanum Aellen Standley's goosefoot Chenopodium subglabrum (S. Wats.) A. Nels. smooth goosefoot Chenopodium watsonii A. Nels. Watson's goosefoot Corispermum hyssopifolium L. common bugseed Corispermum orientale Lam. oriental bugseed Cycloloma atriplicifolium (Spreng.) Coult. winged pigweed Endolepis dioica (Nutt.) Standl. 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 prostrata (L.) Schrad. prostrate summercypress Kochia scoparia (L.) Schrad. common kochia Krascheninnikovia lanata (Pursh) Guldenstaedt winterfat Monolepis nuttalliana (J.A. Schultes) Greene Nuttall's povertyweed Salicornia maritima Wolff & Jefferies slender grasswort Salicornia rubra A. Nels. red swampfire Salsola collina Pallas slender Russian thistle Salsola kali L. prickly Russian thistle Sarcobatus vermiculatus (Hook.) Torr. greasewood Suaeda calceoliformis (Hook.) Moq. Pursh seepweed Suaeda moquinii (Torr.) Greene Mojave seablite Suckleya suckleyana (Torr.) Rydb. poison suckleya 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 COMMELINACEAE Tradescantia bracteata Small ex Britt. longbract spiderwort Tradescantia occidentalis (Britt.) Smyth prairie spiderwort Tradescantia occidentalis var. occidentalis (Britt.) Smyth prairie spiderwort COMPOSITAE Achillea lanulosa Nutt. = Achillea millefolium var. occidentalis Achillea millefolium L. common yarrow Achillea millefolium var. alpicola (Rydb.) Garrett common yarrow Achillea millefolium var. occidentalis DC. western yarrow Achillea nobilis L. noble yarrow Achillea sibirica Ledeb. Siberian 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 heterophylla var. heterophylla (Nutt.) Greene annual 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 Anaphalis margaritacea (L.) Benth. & Hook. f. western pearlyeverlasting Antennaria alpina (L.) Gaertn. alpine pussytoes Antennaria anaphaloides Rydb. pearly pussytoes Antennaria aromatica Evert scented pussytoes Antennaria corymbosa E. Nels. flattop pussytoes Antennaria densifolia Porsild denseleaf pussytoes Antennaria dimorpha (Nutt.) Torr. & Gray low pussytoes Antennaria howellii Greene Howell's pussytoes Antennaria howellii ssp. howellii Greene Howell's pussytoes Antennaria howellii ssp. neodioica (Greene) Bayer field pussytoes Antennaria howellii ssp. petaloidea (Fern.) Bayer small pussytoes Antennaria lanata (Hook.) Greene woolly pussytoes Antennaria luzuloides Torr. & Gray rush pussytoes Antennaria media Greene Rocky Mountain pussytoes Antennaria microphylla Rydb. littleleaf pussytoes Antennaria monocephala DC. pygmy 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. confinis (Greene) Bayer rosy pussytoes Antennaria rosea ssp. pulvinata (Greene) Bayer pulvinate pussytoes Antennaria rosea ssp. rosea Greene rosy pussytoes Antennaria umbrinella Rydb. umber pussytoes Anthemis cotula L. stinking chamomile Arctium lappa L. greater burrdock Arctium minus Bernh. lesser burrdock Arnica X diversifolia Greene (pro sp.) rayless arnica Arnica alpina (L.) Olin alpine 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. chamissonis Less. chamisso arnica Arnica chamissonis ssp. chamissonis var. interior Maguire 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. maguirei (A. Nels.) Maguire chamisso arnica Arnica cordifolia Hook. heartleaf arnica Arnica fulgens Pursh foothill arnica Arnica gracilis Rydb. smallhead arnica Arnica latifolia Bong. broadleaf arnica Arnica lonchophylla Greene longleaf arnica Arnica lonchophylla ssp. arnoglossa (Greene) Maguire seep 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. European wormwood Artemisia annua L. sweet annie Artemisia arbuscula Nutt. low sagebrush Artemisia arbuscula ssp. arbuscula Nutt. gray low sagebrush Artemisia arbuscula ssp. longiloba (Osterhout) L. Shultz alkali sagebrush Artemisia arctica Less. boreal sagebrush Artemisia arctica ssp. arctica Less. boreal 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. purshii (Hook.) Cronq. Pursh's wormwood Artemisia campestris ssp. caudata (Michx.) Hall & Clements field wormwood Artemisia cana Pursh silver sagebrush Artemisia cana ssp. cana Pursh silver sagebrush Artemisia dracunculus L. false tarragon Artemisia frigida Willd. fringed sagewort Artemisia lindleyana Bess. northwest sagebrush Artemisia longifolia Nutt. longleaf sagebrush Artemisia ludoviciana Nutt. estafiate Artemisia ludoviciana ssp. candicans (Rydb.) Keck estafiate Artemisia ludoviciana ssp. incompta (Nutt.) Keck estafiate Artemisia ludoviciana ssp. ludoviciana Nutt. estafiate Artemisia michauxiana Bess. Michaux's sagebrush Artemisia nova A. Nels. black sagebrush Artemisia pedatifida Nutt. birdfoot sagebrush Artemisia rigida (Nutt.) Gray stiff sagebrush Artemisia scopulorum Gray alpine sagebrush Artemisia spinescens D.C. Eat. bud sagebrush Artemisia tilesii Ledeb. Tilesius' wormwood Artemisia tilesii ssp. elatior (Torr. & Gray) Hulten Tilesius' wormwood Artemisia tilesii ssp. unalaschcensis (Bess.) Hulten Alaska sagebrush Artemisia tridentata Nutt. big sagebrush Artemisia tridentata ssp. tridentata Nutt. basin big sagebrush Artemisia tridentata ssp. vaseyana (Rydb.) Beetle mountain big sagebrush Artemisia tridentata ssp. wyomingensis Beetle & Young Wyoming big sagebrush Artemisia tripartita Rydb. threetip sagebrush Artemisia tripartita ssp. tripartita Rydb. Idaho threetip sagebrush 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 ciliolatus Lindl. Lindley's aster Aster ciliolatus var. ciliolatus Lindl. Lindley's 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 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 hendersonii Fern. Lyall aster Aster integrifolius Nutt. thickstem aster Aster laevis L. smooth aster Aster lanceolatus Willd. white panicle aster Aster lanceolatus ssp. hesperius (Gray) Semple & Chmielewski Siskiyou aster Aster lanceolatus ssp. lanceolatus Willd. white panicle aster Aster lanceolatus ssp. lanceolatus var. lanceolatus Willd. white panicle aster Aster longifolius Lam. longleaf aster Aster meritus A. Nels. Aster oblongifolius Nutt. aromatic aster Aster occidentalis (Nutt.) Torr. & Gray western aster Aster occidentalis var. fremontii (Torr. & Gray) A.G. Jones Fremont's aster Aster perelegans A. Nels. & J.F. Macbr. elegant aster Aster sibiricus L. Siberian aster Aster sibiricus var. giganteus (Hook.) Gray giant arctic aster Aster subspicatus Nees Douglas aster Aster subspicatus var. subspicatus Nees leafybract aster Balsamita major Desf. costmary Balsamorhiza incana Nutt. hoary balsamroot Balsamorhiza macrophylla Nutt. cutleaf balsamroot Balsamorhiza sagittata (Pursh) Nutt. arrowleaf balsamroot Bellis perennis L. lawndaisy Bidens cernua L. nodding beggartick Bidens frondosa L. devil's beggartick Bidens tripartita L. threelobe beggarticks Bidens vulgata Greene big devils beggartick 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 eupatorioides (L.) Shinners false boneset Brickellia eupatorioides var. corymbulosa (Torr. & Gray) Shinners false boneset Brickellia grandiflora (Hook.) Nutt. tasselflower brickellbush Brickellia oblongifolia Nutt. Mojave brickellbush Brickellia oblongifolia var. oblongifolia Nutt. narrowleaf brickellbush Canadanthus modestus (Lindl.) Nesom Carduus acanthoides L. spiny plumeless thistle Carduus nutans L. nodding plumeless thistle Carduus nutans ssp. macrolepis (Peterm.) Kazmi nodding plumeless thistle Centaurea biebersteinii DC. spotted knapweed Centaurea cyanus L. garden cornflower Centaurea diffusa Lam. white knapweed Centaurea jacea L. brownray knapweed Centaurea montana L. mountain cornflower Centaurea nigra L. lesser knapweed Centaurea scabiosa L. greater knapweed Centaurea solstitialis L. yellow star thistle Chaenactis douglasii (Hook.) Hook. & Arn. Douglas' dustymaiden Chaenactis douglasii var. alpina Gray alpine dustymaiden Chaenactis douglasii var. douglasii (Hook.) Hook. & Arn. Douglas' dustymaiden Chrysanthemum balsamita (L.) Baill., non L. = Balsamita major Chrysanthemum leucanthemum L. = Leucanthemum vulgare Chrysothamnus graveolens (Nutt.) Greene = Ericameria nauseosa ssp. nauseosa var. glabrata Chrysothamnus linifolius Greene spearleaf rabbitbrush Chrysothamnus nauseosus (Pallas ex Pursh) Britt. = Ericameria nauseosa ssp. nauseosa var. nauseosa Chrysothamnus nauseosus ssp. nauseosus (Pallas ex Pursh) Britt. rubber rabbitbrush Chrysothamnus viscidiflorus (Hook.) Nutt. green rabbitbrush Chrysothamnus viscidiflorus ssp. lanceolatus (Nutt.) Hall & Clements green rabbitbrush Chrysothamnus viscidiflorus ssp. viscidiflorus (Hook.) Nutt. green rabbitbrush Cichorium intybus L. chicory Cirsium arvense (L.) Scop. Canadian thistle Cirsium brevistylum Cronq. clustered thistle Cirsium canescens Nutt. prairie thistle Cirsium canovirens (Rydb.) Petrak graygreen thistle Cirsium flodmanii (Rydb.) Arthur Flodman's thistle Cirsium foliosum (Hook.) DC. elk thistle Cirsium hookerianum Nutt. white thistle Cirsium longistylum Moore & Frankton longstyle thistle Cirsium neomexicanum Gray New Mexico thistle Cirsium pulcherrimum (Rydb.) K. Schum. Wyoming 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 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 elegans Hook. elegant hawksbeard Crepis intermedia Gray limestone 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 nicaeensis Balbis ex Pers. Turkish hawksbeard Crepis 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 Crepis tectorum L. narrowleaf hawksbeard Dugaldia hoopesii (Gray) Rydb. = Hymenoxys hoopesii Dyssodia papposa (Vent.) A.S. Hitchc. fetid marigold Echinacea angustifolia DC. blacksamson echinacea Echinacea angustifolia var. angustifolia DC. blacksamson echinacea Ericameria discoidea (Nutt.) Nesom whitestem heathgoldenrod Ericameria discoidea var. discoidea (Nutt.) Nesom whitestem heathgoldenrod Ericameria discoidea var. linearis (Rydb.) Nesom whitestem heathgoldenrod Ericameria nana Nutt. dwarf heathgoldenrod Ericameria nauseosa (Pallas ex Pursh) Nesom & Baird Ericameria nauseosa ssp. nauseosa (Pallas ex Pursh) Nesom & Baird Ericameria nauseosa ssp. nauseosa var. glabrata Ericameria nauseosa ssp. nauseosa var. nauseosa Ericameria nauseosa ssp. nauseosa var. speciosa Ericameria suffruticosa (Nutt.) Nesom singlehead heathgoldenrod Erigeron acris L. Erigeron acris ssp. acris L. Erigeron acris ssp. acris var. debilis Erigeron acris ssp. politus (Fries) Schinz & R. Keller Erigeron allocotus Blake Big Horn fleabane Erigeron asper Nutt. rough fleabane Erigeron asperugineus (D.C. Eat.) Gray Idaho fleabane Erigeron bellidiastrum Nutt. western daisy fleabane Erigeron bellidiastrum var. bellidiastrum Nutt. western daisy fleabane Erigeron caespitosus Nutt. tufted fleabane Erigeron compositus Pursh cutleaf daisy Erigeron corymbosus Nutt. longleaf fleabane Erigeron coulteri Porter large mountain fleabane Erigeron divergens Torr. & Gray spreading fleabane Erigeron eatonii Gray Eaton's fleabane Erigeron eatonii var. eatonii Gray Eaton's fleabane Erigeron evermannii Rydb. Evermann's fleabane Erigeron filifolius (Hook.) Nutt. threadleaf fleabane Erigeron filifolius var. filifolius (Hook.) Nutt. threadleaf fleabane Erigeron flabellifolius Rydb. fanleaf fleabane Erigeron flagellaris Gray trailing fleabane Erigeron formosissimus Greene beautiful fleabane Erigeron formosissimus var. viscidus (Rydb.) Cronq. beautiful 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 grandiflorus Hook. largeflower fleabane Erigeron humilis Graham arctic alpine fleabane Erigeron lanatus Hook. woolly fleabane Erigeron linearis (Hook.) Piper desert yellow fleabane Erigeron lonchophyllus Hook. Erigeron ochroleucus Nutt. buff fleabane Erigeron ochroleucus var. ochroleucus Nutt. buff 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 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 pumilus ssp. pumilus Nutt. shaggy fleabane Erigeron radicatus Hook. taproot fleabane Erigeron rydbergii Cronq. Rydberg's 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 subtrinervis Rydb. ex Porter & Britt. threenerve fleabane Erigeron subtrinervis var. conspicuus (Rydb.) Cronq. threenerve fleabane Erigeron subtrinervis var. subtrinervis Rydb. ex Porter & Britt. threenerve fleabane Erigeron tener (Gray) Gray slender fleabane Erigeron tweedyi Canby Tweedy's 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 graminifolia (L.) Nutt. flattop goldentop Euthamia graminifolia var. graminifolia (L.) Nutt. flattop goldentop Euthamia occidentalis Nutt. western goldentop Evax prolifera Nutt. ex DC. bighead pygmycudweed Filago arvensis L. field cottonrose Franseria = Ambrosia Gaillardia aristata Pursh common gaillardia Galinsoga quadriradiata Ruiz & Pavon shaggysoldier Gamochaeta purpurea (L.) Cabrera spoonleaf purple everlasting Gnaphalium canescens ssp. microcephalum (Nutt.) Stebbins & Keil = Pseudognaphalium canescens ssp. microcephalum Gnaphalium chilense Spreng. = Pseudognaphalium stramineum Gnaphalium chilense var. confertifolium Greene = Pseudognaphalium stramineum Gnaphalium microcephalum Nutt. = Pseudognaphalium canescens ssp. microcephalum Gnaphalium palustre Nutt. western marsh cudweed Gnaphalium stramineum Kunth = Pseudognaphalium stramineum Gnaphalium viscosum Kunth = Pseudognaphalium viscosum 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 armerioides (Nutt.) Gray = Stenotus armerioides var. armerioides Haplopappus carthamoides (Hook.) Gray = Pyrrocoma carthamoides var. carthamoides Haplopappus contractus Hall = Pyrrocoma uniflora var. uniflora Haplopappus integrifolius Porter ex Gray = Pyrrocoma integrifolia Haplopappus lanuginosus Gray = Stenotus lanuginosus var. lanuginosus Haplopappus macronema (Nutt.) Gray = Ericameria discoidea var. discoidea Haplopappus pygmaeus (Torr. & Gray) Gray = Tonestus pygmaeus Haplopappus spinulosus (Pursh) DC. = Machaeranthera pinnatifida ssp. pinnatifida var. pinnatifida 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 X laetiflorus Pers. (pro sp.) mountain sunflower Helianthus annuus L. common sunflower Helianthus maximiliani Schrad. Maximilian sunflower Helianthus nuttallii Torr. & Gray Nuttall's sunflower Helianthus nuttallii ssp. nuttallii Torr. & Gray Nuttall's sunflower Helianthus nuttallii ssp. rydbergii (Britt.) R.W. Long Rydberg's sunflower Helianthus pauciflorus Nutt. stiff sunflower Helianthus pauciflorus ssp. pauciflorus Nutt. stiff sunflower Helianthus pauciflorus ssp. subrhomboideus (Rydb.) O. Spring & E. Schilling stiff sunflower Helianthus petiolaris Nutt. prairie sunflower Helianthus petiolaris ssp. petiolaris Nutt. prairie sunflower 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 aurantiacum L. orange 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. gracile Hook. slender hawkweed Hieracium scouleri Hook. woollyweed Hieracium scouleri var. scouleri Hook. Scouler's woollyweed Hulsea algida Gray pain hulsea Hymenopappus filifolius Hook. fineleaf hymenopappus Hymenopappus filifolius var. luteus (Nutt.) B.L. Turner fineleaf hymenopappus Hymenopappus filifolius var. polycephalus (Osterhout) B.L. Turner manyhead hymenopappus Hymenoxys hoopesii (Gray) Bierner Hymenoxys richardsonii (Hook.) Cockerell pingue hymenoxys Hymenoxys richardsonii var. richardsonii (Hook.) Cockerell pingue hymenoxys 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 ludoviciana (Nutt.) Riddell biannual lettuce Lactuca pulchella (Pursh) DC. = Lactuca tatarica var. pulchella 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 Lapsana communis L. common nipplewort Leucanthemum leucanthemum (L.) Rydb. = Leucanthemum vulgare Leucanthemum vulgare Lam. oxeyedaisy Liatris ligulistylis (A. Nels.) K. Schum. Rocky Mountain gayfeather Liatris punctata Hook. dotted gayfeather Liatris punctata var. punctata Hook. dotted gayfeather 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 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 Machaeranthera tanacetifolia (Kunth) Nees tanseyleaf aster 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 torreyi Gray Torrey's desertdandelion Matricaria discoidea DC. disc mayweed Matricaria matricarioides (Less.) Porter = Matricaria discoidea Matricaria suaveolens (Pursh) Buch., non L. = Matricaria discoidea Megalodonta beckii (Torr. ex Spreng.) Greene aquatic beggartick Megalodonta beckii var. beckii (Torr. ex Spreng.) Greene Beck's watermarigold Microseris nutans (Hook.) Schultz-Bip. nodding microceris Microseris nutans ssp. nutans (Hook.) Schultz-Bip. nodding silverpuffs Nothocalais cuspidata (Pursh) Greene sharppoint microseris Nothocalais nigrescens (Henderson) Heller meadow microseris Nothocalais troximoides (Gray) Greene weevil microseris Oligoneuron album (Nutt.) Nesom Oligoneuron rigidum (L.) Small Oligoneuron rigidum var. humile (Porter) Nesom Oligoneuron rigidum var. rigidum (L.) Small Onopordum acanthium L. Scotch cottonthistle Oonopsis multicaulis (Nutt.) Greene branched goldenweed 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 Picradeniopsis oppositifolia (Nutt.) Rydb. ex Britt. oppositeleaf bahia Platyschkuhria integrifolia (Gray) Rydb. oblongleaf bahia Platyschkuhria integrifolia var. integrifolia (Gray) Rydb. basindaisy Prenanthes racemosa Michx. purple rattlesnakeroot Prenanthes racemosa ssp. multiflora Cronq. purple rattlesnakeroot Prenanthes sagittata (Gray) A. Nels. arrowleaf rattlesnakeroot 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 Pyrrocoma carthamoides Hook. largeflower goldenweed Pyrrocoma carthamoides var. carthamoides Hook. loved goldenweed Pyrrocoma integrifolia (Porter ex Gray) Greene manysted goldenweed Pyrrocoma lanceolata (Hook.) Greene lanceleaf goldenweed Pyrrocoma uniflora (Hook.) Greene plantain goldenweed Pyrrocoma uniflora var. uniflora (Hook.) Greene plantain goldenweed Ratibida columnifera (Nutt.) Woot. & Standl. upright prairie coneflower 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 Saussurea densa (Hook.) Rydb. clustered sawwort Scorzonera laciniata L. cutleaf vipergrass Senecio amplectens Gray showy alpine groundsel Senecio amplectens var. holmii (Greene) Harrington Holm's ragwort Senecio aureus var. borealis Torr. & Gray = Senecio streptanthifolius var. borealis Senecio canus Hook. woolly groundsel Senecio crassulus Gray thickleaf groundsel Senecio crocatus Rydb. saffron ragwort Senecio cymbalaria Pursh dwarf arctic ragwort 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 eremophilus Richards. desert groundsel Senecio eremophilus var. eremophilus Richards. desert groundsel Senecio fremontii Torr. & Gray Fremont's groundsel Senecio fuscatus Hayek fuscatus 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. integerrimus Nutt. lambstongue groundsel Senecio integerrimus var. ochroleucus (Gray) Cronq. paleyellow groundsel Senecio integerrimus var. scribneri (Rydb.) T.M. Barkl. Scribner's groundsel Senecio lugens Richards. small blacktip groundsel Senecio megacephalus Nutt. rocky groundsel Senecio pauciflorus Pursh alpine groundsel Senecio pauperculus Michx. balsam groundsel Senecio plattensis Nutt. prairie groundsel Senecio pseudaureus Rydb. falsegold groundsel Senecio pseudaureus var. pseudaureus Rydb. falsegold groundsel Senecio serra Hook. butterweed groundsel Senecio serra var. serra Hook. tall ragwort Senecio sphaerocephalus Greene ballhead groundsel Senecio streptanthifolius Greene cleftleaf groundsel Senecio streptanthifolius var. borealis (Torr. & Gray) J.F. Bain Rocky Mountain 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. gilvocanescens Rydb. shorthair goldenrod Solidago canadensis var. salebrosa (Piper) M.E. Jones salebrosa goldenrod Solidago gigantea Ait. giant goldenrod Solidago missouriensis Nutt. Missouri goldenrod Solidago missouriensis var. missouriensis Nutt. Missouri goldenrod Solidago mollis Bartl. velvety goldenrod Solidago mollis var. mollis Bartl. velvety goldenrod Solidago multiradiata Ait. mountain goldenrod Solidago multiradiata var. scopulorum Gray manyray goldenrod Solidago nana Nutt. baby goldenrod Solidago nemoralis Ait. Dyersweed goldenrod Solidago nemoralis var. longipetiolata (Mackenzie & Bush) Palmer & Steyermark gray goldenrod Solidago rugosa P. Mill. wrinkleleaf goldenrod Solidago rugosa ssp. rugosa P. Mill. wrinkleleaf goldenrod Solidago rugosa ssp. rugosa var. villosa (Pursh) Fern. wrinkleleaf 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. spathulata 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 capitata Nutt. rock tansy Stenotus acaulis (Nutt.) Nutt. stemless mock goldenweed Stenotus acaulis var. acaulis (Nutt.) Nutt. stemless goldenweed Stenotus armerioides Nutt. thrift mock goldenweed Stenotus armerioides var. armerioides Nutt. thrifty 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 Stephanomeria runcinata Nutt. desert wirelettuce Stephanomeria spinosa (Nutt.) S. Tomb thorn skeletonweed Stephanomeria tenuifolia (Raf.) Hall narrowleaf wirelettuce Stephanomeria tenuifolia var. tenuifolia (Raf.) Hall narrowleaf wirelettuce Tanacetum balsamita L. = Balsamita major 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 spinosa Hook. & Arn. shortspine horsebrush Tetraneuris acaulis (Pursh) Greene stemless hymenoxys Tetraneuris acaulis var. acaulis (Pursh) Greene stemless hymenoxys Tetraneuris grandiflora (Torr. & Gray ex Gray) Parker graylocks hymenoxys Tetraneuris torreyana (Nutt.) Greene Torrey's hymenoxys Thelesperma subnudum Gray sand fringedpod Thelesperma subnudum var. marginatum (Rydb.) T.E. Melchert ex Cronq. greenthread border Tonestus aberrans (A. Nels.) Nesom & Morgan Idaho goldenweed Tonestus lyallii (Gray) A. Nels. Lyall's goldenweed Tonestus pygmaeus (Torr. & Gray) A. Nels. pygmy goldenweed Townsendia alpigena Piper Wyoming townsendia Townsendia alpigena var. alpigena Piper mountain townsendia Townsendia condensata Parry ex Gray hairy townsendia Townsendia condensata var. condensata Parry ex Gray cushion townsend daisy Townsendia exscapa (Richards.) Porter stemless townsendia Townsendia florifer (Hook.) Gray showy townsendia Townsendia hookeri Beaman Hooker's townsendia Townsendia incana Nutt. hoary townsendia Townsendia leptotes (Gray) Osterhout common townsendia Townsendia parryi D.C. Eat. Parry's townsend daisy Townsendia spathulata Nutt. sword townsendia Tragopogon dubius Scop. yellow salsify 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 Verbesina encelioides (Cav.) Benth. & Hook. f. ex Gray golden crownbeard Vernonia fasciculata Michx. prairie ironweed Vernonia fasciculata ssp. corymbosa (Schwein. ex Keating) S.B. Jones prairie ironweed Wyethia amplexicaulis (Nutt.) Nutt. mulesears wyethia Wyethia helianthoides Nutt. sunflower wyethia Wyethia scabra Hook. badlands wyethia Wyethia scabra var. scabra Hook. badlands mulesears Xanthium spinosum L. spiny cockleburr Xanthium strumarium L. rough cockleburr Xanthium strumarium var. canadense (P. Mill.) Torr. & Gray Canada cockleburr Xanthocephalum sarothrae (Pursh) Shinners = Gutierrezia sarothrae Xylorhiza glabriuscula Nutt. smooth woodyaster Xylorhiza glabriuscula var. glabriuscula Nutt. smooth woodyaster CONVOLVULACEAE Calystegia macounii (Greene) Brummitt Macoun's false bindweed Calystegia sepium (L.) R. Br. hedge false bindweed Calystegia sepium ssp. angulata Brummitt hedge false bindweed Calystegia sepium ssp. sepium (L.) R. Br. hedge false bindweed Convolvulus arvensis L. field bindweed Cuscuta approximata Bab. alfalfa dodder Cuscuta approximata var. urceolata (Kunze) Yuncker alfalfa dodder Cuscuta coryli Engelm. hazel dodder Cuscuta epithymum L. clover 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 megalocarpa Rydb. bigfruit dodder Cuscuta pentagona Engelm. fiveangled dodder Cuscuta pentagona var. pentagona Engelm. fiveangled dodder Evolvulus nuttallianus J.A. Schultes shaggy dwarf morningglory Ipomoea leptophylla Torr. bush morningglory CORNACEAE Cornus alba L. p.p. = Cornus sericea ssp. sericea Cornus canadensis L. bunchberry dogwood Cornus sericea L. redosier dogwood Cornus sericea ssp. occidentalis (Torr. & Gray) Fosberg western dogwood Cornus sericea ssp. sericea L. redosier dogwood CRASSULACEAE Crassula saginoides (Maxim.) Bywater & Wickens wrinkleseed pygmyweed Rhodiola integrifolia Raf. = Sedum integrifolium ssp. integrifolium Sedum acre L. goldmoss stonecrop 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. lanceolatum Torr. spearleaf stonecrop Sedum lanceolatum ssp. subalpinum (Blank.) Clausen subalpine stonecrop Sedum rhodanthum Gray redpod stonecrop Sedum stenopetalum Pursh wormleaf stonecrop Sedum stenopetalum ssp. stenopetalum Pursh wormleaf stonecrop Tillaea = Crassula saginoides 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 Alyssum minus (L.) Rothm. Alyssum minus var. micranthum (C.A. Mey.) Dudley Arabidopsis salsuginea (Pallas) N. Busch saltwater cress Arabidopsis thaliana (L.) Heynh. mouseear cress Arabis X divaricarpa A. Nels. (pro sp.) spreadingpod rockcress Arabis drummondii Gray Drummond's rockcress Arabis fecunda Rollins Mt. Sapphire rockcress Arabis glabra (L.) Bernh. tower rockcress Arabis glabra var. glabra (L.) Bernh. tower rockcress Arabis hirsuta (L.) Scop. hairy rockcress Arabis hirsuta var. pycnocarpa (M. Hopkins) Rollins creamflower rockcress Arabis holboellii Hornem. Holboell's rockcress Arabis holboellii var. collinsii (Fern.) Rollins Collins' 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 lemmonii var. drepanoloba (Greene) Rollins soldier rockcress Arabis lemmonii var. 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 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. columbiana (Macoun) Rollins Columbian rockcress Arabis sparsiflora var. subvillosa (S. Wats.) Rollins hairystem rockcress Arabis williamsii Rollins Wind River rockcress Arabis williamsii var. saximontana (Rollins) Rollins Cross Mountain rockcress 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 napus L. rape 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 Camelina sativa ssp. sativa (L.) Crantz gold-of-pleasure Capsella bursa-pastoris (L.) Medik. shepherd's purse 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 oligosperma Nutt. Idaho bittercress Cardamine oligosperma var. oligosperma Nutt. little western bittercress Cardamine pensylvanica Muhl. ex Willd. Pennsylvania bittercress Cardamine rupicola (O.E. Schulz) C.L. Hitchc. cliff bittercress Cardaria chalapensis (L.) Hand.-Maz. Cardaria draba (L.) Desv. pepperweed whitetop Cardaria pubescens (C.A. Mey.) Jarmolenko hairy whitetop Chorispora tenella (Pallas) DC. crossflower Conringia orientalis (L.) Dumort. hare's ear mustard 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. brachycarpa (Richards.) Detling western tansymustard Descurainia pinnata ssp. filipes (Gray) Detling western tansymustard Descurainia pinnata ssp. intermedia (Rydb.) Detling western tansymustard Descurainia pinnata ssp. nelsonii (Rydb.) Detling Nelson's tansymustard Descurainia sophia (L.) Webb ex Prantl herb sophia Diplotaxis muralis (L.) DC. annual wallrocket Draba albertina Greene slender whitlowgrass Draba aurea Vahl ex Hornem. golden whitlowgrass Draba brachycarpa Nutt. ex Torr. & Gray shortpod whitlowgrass Draba breweri S. Wats. cushion whitlowgrass Draba breweri var. cana (Rydb.) Rollins Draba crassa Rydb. thickleaf whitlowgrass Draba crassifolia Graham snowbed whitlowgrass Draba crassifolia var. crassifolia Graham snowbed whitlowgrass Draba daviesiae (C.L. Hitchc.) Rollins bitter root whitlowgrass Draba densifolia Nutt. denseleaf whitlowgrass Draba fladnizensis Wulfen Austrian whitlowgrass Draba glabella Pursh smooth whitlowgrass Draba globosa Payson beavertip whitlowgrass Draba incerta Payson Yellowstone whitlowgrass Draba lonchocarpa Rydb. lancepod whitlowgrass Draba lonchocarpa var. lonchocarpa Rydb. lancepod whitlowgrass Draba macounii O.E. Schulz Macoun's whitlowgrass Draba nemorosa L. woodland whitlowgrass Draba nivalis Lilj. yellow arctic 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. paysonii J.F. Macbr. Payson's whitlowgrass Draba paysonii var. treleasii (O.E. Schulz) C.L. Hitchc. Trelease's whitlowgrass Draba porsildii Mulligan Porsild's whitlowgrass Draba praealta Greene tall whitlowgrass Draba reptans (Lam.) Fern. Carolina whitlowgrass Draba ventosa Gray Wind River whitlowgrass Draba verna L. spring whitlowgrass Eruca vesicaria (L.) Cav. rocketsalad Eruca vesicaria ssp. sativa (P. Mill.) Thellung rocketsalad Erucastrum gallicum (Willd.) O.E. Schulz common dogmustard Erysimum capitatum (Dougl. ex Hook.) Greene sanddune wallflower Erysimum capitatum var. capitatum (Dougl. ex Hook.) Greene sanddune wallflower Erysimum cheiranthoides L. wormseed wallflower Erysimum inconspicuum (S. Wats.) MacM. shy wallflower Erysimum inconspicuum var. inconspicuum (S. Wats.) MacM. shy wallflower Erysimum repandum L. spreading wallflower 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 densiflorum Schrad. common pepperweed Lepidium densiflorum var. densiflorum Schrad. common pepperweed Lepidium densiflorum var. macrocarpum Mulligan bigseed pepperweed Lepidium densiflorum var. pubecarpum (A. Nels.) Thellung babyseed pepperweed Lepidium latifolium L. broadleaved pepperweed Lepidium montanum Nutt. mountain pepperweed Lepidium montanum var. montanum Nutt. mountain pepperweed Lepidium perfoliatum L. clasping pepperweed Lepidium ramosissimum A. Nels. manybranched pepperweed Lepidium sativum L. gardencress pepperweed Lepidium virginicum L. Virginia pepperweed Lepidium virginicum var. pubescens (Greene) Thellung hairy pepperweed Lesquerella alpina (Nutt.) S. Wats. alpine bladderpod Lesquerella arenosa (Richards.) Rydb. Great Plains bladderpod Lesquerella arenosa var. arenosa (Richards.) Rydb. Great Plains bladderpod Lesquerella carinata Rollins Idaho bladderpod Lesquerella condensata A. Nels. dense bladderpod Lesquerella humilis Rollins St. Marys Peak bladderpod Lesquerella klausii Rollins Rogers Pass bladderpod Lesquerella ludoviciana (Nutt.) S. Wats. foothill bladderpod Lobularia maritima (L.) Desv. seaside lobularia Malcolmia africana (L.) Ait. f. African mustard Nasturtium nasturtium-aquaticum (L.) Karsten = Rorippa nasturtium-aquaticum Nasturtium officinale Ait. f. = Rorippa nasturtium-aquaticum Physaria acutifolia Rydb. sharpleaf twinpod Physaria acutifolia var. acutifolia Rydb. southern twinpod Physaria brassicoides Rydb. double twinpod Physaria didymocarpa (Hook.) Gray common twinpod Physaria didymocarpa var. didymocarpa (Hook.) Gray common twinpod Physaria didymocarpa var. lanata A. Nels. common twinpod Physaria geyeri (Hook.) Gray Geyer's twinpod Physaria geyeri var. geyeri (Hook.) Gray Geyer's twinpod Physaria saximontana Rollins Fremont County twinpod Physaria saximontana var. dentata Rollins Fremont County twinpod Raphanus raphanistrum L. wild radish Raphanus sativus L. wild radish Rorippa alpina (S. Wats.) Rydb. alpine 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. orientalis R. Stuckey oriental 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 Schoenocrambe linifolia (Nutt.) Greene flaxleaf plainsmustard Sinapis alba L. white mustard Sinapis arvensis L. charlock mustard 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 Smelowskia calycina var. americana (Regel & Herder) Drury & Rollins American false candytuft Stanleya pinnata (Pursh) Britt. desert princesplume Stanleya pinnata var. pinnata (Pursh) Britt. pinnate princesplume Stanleya tomentosa Parry hairy princesplume Stanleya viridiflora Nutt. green princesplume Streptanthella longirostris (S. Wats.) Rydb. longbeak streptanthella Thelypodium integrifolium (Nutt.) Endl. ex Walp. entireleaved thelypody Thelypodium integrifolium ssp. integrifolium (Nutt.) Endl. ex Walp. entireleaved thelypody Thelypodium paniculatum A. Nels. northwestern 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 montanum L. alpine pennycress Thlaspi montanum var. montanum L. alpine pennycress Thlaspi parviflorum A. Nels. meadow pennycress CUCURBITACEAE Bryonia alba L. white bryony 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 horizontalis Moench creeping juniper Juniperus osteosperma (Torr.) Little Utah juniper Juniperus scopulorum Sarg. Rocky Mountain juniper Thuja plicata Donn ex D. Don western redcedar 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 linearis Goldie slenderleaf sundew Drosera rotundifolia L. roundleaf sundew 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 X nelsonii (A.A. Eat.) Schaffn. (pro sp.) Nelson's horsetail Equisetum arvense L. field horsetail Equisetum fluviatile L. water horsetail Equisetum hyemale L. 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 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 Arctostaphylos patula Greene greenleaf manzanita 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 Cassiope mertensiana var. mertensiana (Bong.) D. Don western moss heather Cassiope tetragona (L.) D. Don white arctic mountain heather Cassiope tetragona var. saximontana (Small) C.L. Hitchc. white arctic mountain 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 humifusa (Graham) Rydb. alpine spicywintergreen Gaultheria ovatifolia Gray western teaberry Kalmia microphylla (Hook.) Heller alpine laurel Kalmia polifolia ssp. microphylla (Hook.) Calder & Taylor = Kalmia microphylla Ledum glandulosum Nutt. Western Labradortea Menziesia ferruginea Sm. rusty menziesia Moneses uniflora (L.) Gray single delight Orthilia secunda (L.) House sidebells wintergreen Phyllodoce X intermedia (Hook.) Rydb. (pro sp.) hybrid mountainheath Phyllodoce empetriformis (Sm.) D. Don pink mountainheath Phyllodoce glanduliflora (Hook.) Coville yellow mountainheath 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 pallida Greene = Pyrola picta Pyrola picta Sm. whiteveined wintergreen 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 myrtilloides Michx. velvetleaf huckleberry Vaccinium myrtillus L. whortleberry Vaccinium ovalifolium Sm. ovalleaf blueberry Vaccinium scoparium Leib. ex Coville grouse whortleberry Vaccinium uliginosum L. bog blueberry EUPHORBIACEAE Chamaesyce geyeri (Engelm.) Small Geyer's sandmat Chamaesyce glyptosperma (Engelm.) Small ribseed sandmat Chamaesyce maculata (L.) Small spotted sandmat Chamaesyce missurica (Raf.) Shinners prairie sandmat Chamaesyce serpens (Kunth) Small matted sandmat Chamaesyce serpyllifolia (Pers.) Small thymeleaf sandmat Chamaesyce serpyllifolia ssp. serpyllifolia (Pers.) Small thymeleaf sandmat Euphorbia commutata Engelm. tinted woodland spurge Euphorbia cyparissias L. cypress spurge Euphorbia esula L. wolf's milk Euphorbia esula var. esula L. wolf's milk Euphorbia glyptosperma Engelm. = Chamaesyce glyptosperma Euphorbia helioscopia L. madwoman's milk Euphorbia hexagona Nutt. ex Spreng. sixangle spurge Euphorbia maculata L. = Chamaesyce maculata Euphorbia marginata Pursh snow on the mountain Euphorbia missurica Raf. = Chamaesyce missurica Euphorbia nuttallii (Engelm.) Small = Chamaesyce missurica Euphorbia peplus L. petty spurge Euphorbia robusta (Engelm.) Small Rocky Mountain spurge Euphorbia serpens Kunth = Chamaesyce serpens Euphorbia serpyllifolia Pers. = Chamaesyce serpyllifolia ssp. serpyllifolia Euphorbia spathulata Lam. warty spurge FAGACEAE Quercus macrocarpa Michx. bur oak FUMARIACEAE Corydalis aurea Willd. scrambledeggs Corydalis aurea ssp. aurea Willd. scrambledeggs Corydalis aurea ssp. occidentalis (Engelm. ex Gray) G.B. Ownbey scrambledeggs Corydalis sempervirens (L.) Pers. rock harlequin Dicentra uniflora Kellogg longhorn steershead Fumaria officinalis L. drug fumitory GENTIANACEAE Amarella = Gentianella amarella Centaurium exaltatum (Griseb.) W. Wight ex Piper desert centaury Frasera albicaulis Dougl. ex Griseb. whitestem elkweed Frasera albicaulis var. albicaulis Dougl. ex Griseb. whitestem elkweed Frasera speciosa Dougl. ex Griseb. green gentian Gentiana affinis Griseb. pleated gentian Gentiana algida Pallas whitish gentian Gentiana amarella L. auct. p.p. = Gentianella amarella ssp. acuta Gentiana calycosa Griseb. Rainier pleated gentian Gentiana crinita Froel. = Gentianopsis crinita Gentiana forwoodii Gray = Gentiana affinis Gentiana fremontii Torr. moss gentian Gentiana glauca Pallas pale gentian Gentiana macounii Holm = Gentianopsis macounii Gentiana propinqua Richards. = Gentianella propinqua ssp. propinqua Gentiana prostrata Haenke pygmy gentian Gentiana rusbyi Greene = Gentiana affinis 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 propinqua ssp. propinqua (Richards.) J. Gillett fourpart dwarfgentian Gentianella tenella (Rottb.) Boerner Dane's dwarfgentian Gentianella tenella ssp. tenella (Rottb.) Boerner Dane's dwarfgentian Gentianopsis crinita (Froel.) Ma greater fringedgentian Gentianopsis macounii (Holm) Iltis Macoun's fringedgentian Gentianopsis simplex (Gray) Iltis oneflower fringedgentian Gentianopsis thermalis (Kuntze) Iltis Rocky Mountain fringedgentian Halenia deflexa (Sm.) Griseb. American spurredgentian Halenia deflexa ssp. deflexa (Sm.) Griseb. American spurredgentian 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 molle L. dovefoot 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 americanum P. Mill. American black currant Ribes aureum Pursh golden currant Ribes aureum var. aureum Pursh golden currant Ribes aureum var. villosum DC. golden currant Ribes cereum Dougl. wax currant Ribes cereum var. cereum Dougl. wax currant Ribes cereum var. pedicellare Brewer & S. Wats. whisky currant Ribes hirtellum Michx. hairystem gooseberry Ribes hudsonianum Richards. northern black 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 missouriense Nutt. Missouri gooseberry Ribes montigenum McClatchie gooseberry 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. oxyacanthoides L. Canadian gooseberry Ribes oxyacanthoides ssp. setosum (Lindl.) Sinnott inland gooseberry Ribes rubrum L. cultivated currant Ribes triste Pallas red currant Ribes viscosissimum Pursh sticky currant Ribes viscosissimum var. viscosissimum Pursh sticky currant HALORAGACEAE Myriophyllum sibiricum Komarov shortspike watermilfoil Myriophyllum verticillatum L. whorlleaf watermilfoil HIPPURIDACEAE Hippuris vulgaris L. common marestail HYDRANGEACEAE Philadelphus inodorus L. scentless mockorange 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. parvifolius Hu Lewis' mockorange Philadelphus lewisii var. platyphyllus (Rydb.) Hu Lewis' 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 Nemophila breviflora Gray basin nemophila Phacelia bakeri (Brand) J.F. Macbr. Baker's scorpionweed Phacelia franklinii (R. Br.) Gray Franklin's phacelia 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 incana Brand hoary phacelia Phacelia ivesiana Torr. Ives' phacelia Phacelia leptosepala Rydb. narrowsepal scorpionweed Phacelia linearis (Pursh) Holz. threadleaf phacelia Phacelia lyallii (Gray) Rydb. alpine 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. sericea (Graham) Gray purplefringe Phacelia thermalis Greene heated phacelia Romanzoffia sitchensis Bong. Sitka mistmaiden IRIDACEAE Iris missouriensis Nutt. Rocky Mountain iris Iris pseudacorus L. paleyellow iris 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 ISOETACEAE Isoetes bolanderi Engelm. Bolander's quillwort Isoetes bolanderi var. bolanderi Engelm. Bolander's quillwort Isoetes howellii Engelm. Howell's quillwort Isoetes melanopoda Gay & Durieu ex Durieu blackfoot 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 Isoetes tenella LÇman LABIATAE Agastache cusickii (Greenm.) Heller Cusick's giant hyssop Agastache foeniculum (Pursh) Kuntze blue giant hyssop Agastache urticifolia (Benth.) Kuntze nettleleaf giant hyssop Agastache urticifolia var. urticifolia (Benth.) Kuntze nettleleaf giant hyssop Clinopodium vulgare L. wild basil Dracocephalum parviflorum Nutt. American dragonhead Dracocephalum thymiflorum L. thymeleaf dragonhead Galeopsis tetrahit L. brittlestem hempnettle Glechoma hederacea L. groundivy Hedeoma drummondii Benth. Drummond's falsepennyroyal Hedeoma hispida Pursh rough falsepennyroyal Hyssopus officinalis L. hyssop 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 arvensis L. wild mint 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. fistulosa L. wildbergamot beebalm Monarda fistulosa ssp. fistulosa var. menthifolia (Graham) Fern. wild oregano Monarda fistulosa ssp. fistulosa var. mollis (L.) Benth. oswego tea Monarda menthifolia Graham = Monarda fistulosa ssp. fistulosa var. menthifolia Monardella glauca Greene Nepeta cataria L. catnip Physostegia parviflora Nutt. ex Gray western false dragonhead Physostegia virginiana (L.) Benth. obedient plant Physostegia virginiana ssp. virginiana (L.) Benth. obedient plant Prunella vulgaris L. common selfheal Salvia X sylvestris L. (pro sp.) woodland sage Salvia nemorosa L. woodland sage Salvia reflexa Hornem. chán Salvia sclarea L. sclary sage Satureja chamissonis (Benth.) Briq. = Satureja douglasii Satureja douglasii (Benth.) Briq. yerba buena Scutellaria epilobiifolia A. Hamilton = Scutellaria galericulata Scutellaria galericulata L. marsh skullcap Scutellaria lateriflora L. blue skullcap Scutellaria lateriflora var. lateriflora L. blue 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 Thymus praecox Opiz mother of thyme Thymus praecox ssp. arcticus (Dur.) Jalas creeping thyme LEGUMINOSAE Amorpha canescens Pursh leadplant Astragalus adsurgens Pallas standing milkvetch Astragalus adsurgens var. robustior Hook. prairie milkvetch Astragalus agrestis Dougl. ex G. Don purple milkvetch Astragalus alpinus L. alpine milkvetch Astragalus alpinus var. alpinus L. alpine milkvetch Astragalus americanus (Hook.) M.E. Jones American milkvetch Astragalus aretioides (M.E. Jones) Barneby cushion milkvetch Astragalus argophyllus Nutt. silverleaf milkvetch Astragalus argophyllus var. argophyllus Nutt. silverleaf milkvetch Astragalus argophyllus var. martinii M.E. Jones silverleaf milkvetch Astragalus atropubescens Coult. & Fisher hangingpod milkvetch Astragalus australis (L.) Lam. Indian milkvetch Astragalus barrii Barneby Barr's milkvetch Astragalus bisulcatus (Hook.) Gray twogrooved milkvetch Astragalus bisulcatus var. bisulcatus (Hook.) Gray twogrooved milkvetch Astragalus bourgovii Gray Bourgov's 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 ceramicus Sheldon painted milkvetch Astragalus ceramicus var. apus Barneby painted milkvetch Astragalus ceramicus var. filifolius (Gray) F.J. Herm. painted milkvetch Astragalus chamaeleuce Gray cicada milkvetch Astragalus cibarius Sheldon silky milkvetch Astragalus cicer L. cicer milkvetch Astragalus convallarius Greene timber milkvetch Astragalus convallarius var. convallarius Greene timber milkvetch Astragalus crassicarpus Nutt. groundplum milkvetch Astragalus crassicarpus var. crassicarpus Nutt. groundplum milkvetch Astragalus crassicarpus var. paysonii (E.H. Kelso) Barneby Payson's milkvetch Astragalus diversifolius Gray meadow milkvetch Astragalus drummondii Dougl. ex Hook. Drummond's milkvetch Astragalus eucosmus B.L. Robins. elegant milkvetch Astragalus falcatus Lam. Russian milkvetch Astragalus flexuosus (Hook.) Dougl. ex G. Don flexile milkvetch Astragalus flexuosus var. flexuosus (Hook.) Dougl. ex G. Don flexile milkvetch Astragalus geyeri Gray Geyer's milkvetch Astragalus geyeri var. geyeri Gray Geyer's milkvetch Astragalus gilviflorus Sheldon plains milkvetch Astragalus gracilis Nutt. slender milkvetch Astragalus grayi Parry ex S. Wats. Gray's milkvetch Astragalus hyalinus M.E. Jones summer milkvetch Astragalus inflexus Dougl. ex Hook. bent milkvetch Astragalus kentrophyta Gray spiny milkvetch Astragalus kentrophyta var. kentrophyta Gray spiny milkvetch Astragalus kentrophyta var. tegetarius (S. Wats.) Dorn mat milkvetch Astragalus lentiginosus Dougl. ex Hook. specklepod milkvetch Astragalus lentiginosus var. salinus (T.J. Howell) Barneby salty loco milkvetch Astragalus leptaleus Gray meadow milkvetch Astragalus lotiflorus Hook. lotus 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. decumbens (Nutt. ex Torr. & Gray) Cronq. prostrate loco milkvetch Astragalus miser var. hylophilus (Rydb.) Barneby woody loco milkvetch Astragalus miser var. miser Dougl. timber milkvetch Astragalus miser var. praeteritus Barneby Yellowstone loco milkvetch Astragalus miser var. serotinus (Gray ex Cooper) Barneby timber milkvetch Astragalus missouriensis Nutt. Missouri milkvetch Astragalus missouriensis var. missouriensis Nutt. Missouri milkvetch Astragalus molybdenus Barneby Leadville milkvetch Astragalus oreganus Nutt. Oregon milkvetch Astragalus pectinatus (Hook.) Dougl. ex G. Don narrowleaf milkvetch Astragalus plattensis Nutt. Platte River milkvetch Astragalus platytropis Gray broadkeel milkvetch Astragalus purshii Dougl. ex Hook. woollypod milkvetch Astragalus purshii var. concinnus Barneby concinnus milkvetch Astragalus purshii var. purshii Dougl. ex Hook. Pursh's milkvetch Astragalus racemosus Pursh alkali poisonvetch Astragalus racemosus var. longisetus M.E. Jones alkali poisonvetch Astragalus robbinsii (Oakes) Gray Robbins' milkvetch Astragalus robbinsii var. minor (Hook.) Barneby Robbins' milkvetch Astragalus scaphoides (M.E. Jones) Rydb. basalt milkvetch Astragalus sericoleucus Gray silky milkvetch Astragalus spatulatus Sheldon tufted milkvetch Astragalus tenellus Pursh looseflower milkvetch Astragalus terminalis S. Wats. railhead milkvetch Astragalus vexilliflexus Sheldon bentflower milkvetch Astragalus vexilliflexus var. vexilliflexus Sheldon bentflower milkvetch Caragana arborescens Lam. Siberian peashrub Coronilla varia L. purple crownvetch Cytisus scoparius (L.) Link scotchbroom Cytisus scoparius var. scoparius (L.) Link scotchbroom Dalea candida Willd. slender white prairieclover Dalea candida var. candida Willd. white prairieclover Dalea candida var. oligophylla (Torr.) Shinners white prairieclover Dalea enneandra Nutt. nineanther prairieclover Dalea purpurea Vent. purple prairieclover Dalea purpurea var. purpurea Vent. violet prairieclover Dalea villosa (Nutt.) Spreng. silky prairieclover Dalea villosa var. villosa (Nutt.) Spreng. silky prairieclover Glycyrrhiza lepidota Pursh American licorice Hedysarum alpinum L. alpine sweetvetch Hedysarum alpinum var. americanum Michx. American alpine sweetvetch Hedysarum boreale Nutt. northern sweetvetch Hedysarum boreale ssp. boreale Nutt. boreal sweetvetch Hedysarum boreale ssp. boreale var. boreale Nutt. boreal sweetvetch Hedysarum boreale ssp. mackenziei (Richards.) Welsh Mackenzie's sweetvetch Hedysarum occidentale Greene western sweetvetch Hedysarum sulphurescens Rydb. white sweetvetch Lathyrus bijugatus White drypark peavine Lathyrus latifolius L. perennial peavine Lathyrus ochroleucus Hook. cream peavine Lathyrus tuberosus L. tuberous sweetpea Lotus corniculatus L. birdfoot deervetch 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 arbustus Dougl. ex Lindl. 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 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 depressus Rydb. depressed lupine Lupinus leucophyllus Dougl. ex Lindl. 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 minimus Dougl. ex Hook. Kettle Falls lupine Lupinus monticola Rydb. mountain lupine Lupinus parviflorus Nutt. ex Hook. & Arn. lodgepole lupine Lupinus parviflorus ssp. parviflorus Nutt. ex Hook. & Arn. lodgepole lupine Lupinus plattensis S. Wats. Nebraska lupine Lupinus polyphyllus Lindl. bigleaf lupine Lupinus polyphyllus ssp. polyphyllus Lindl. bigleaf lupine Lupinus pusillus Pursh rusty lupine Lupinus pusillus ssp. pusillus Pursh rusty lupine Lupinus sericeus Pursh silky lupine Lupinus sericeus ssp. sericeus Pursh silky lupine Lupinus sericeus ssp. sericeus var. sericeus Pursh silky 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. falcata (L.) Arcang. yellow alfalfa Medicago sativa ssp. sativa L. alfalfa Melilotus albus Medik. = Melilotus officinalis 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. columbiana (St. John) Barneby northern yellow locoweed Oxytropis campestris var. cusickii (Greenm.) Barneby Cusick's crazyweed Oxytropis deflexa (Pallas) DC. hangpod crazyweed 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. atropurpurea (Rydb.) Barneby haresfoot locoweed Oxytropis lagopus var. conjugans Barneby haresfoot locoweed Oxytropis lagopus var. lagopus Nutt. haresfoot locoweed Oxytropis lambertii Pursh Lambert's crazyweed 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 parryi Gray Parry's crazyweed Oxytropis podocarpa Gray stalkedpod locoweed Oxytropis riparia Litv. Ruby Valley pointvetch Oxytropis sericea Nutt. silvery oxytrope Oxytropis sericea var. sericea Nutt. silvery oxytrope Oxytropis splendens Dougl. ex Hook. showy pointvetch Oxytropis viscida var. viscida Nutt. sticky locoweed Pediomelum argophyllum (Pursh) J. Grimes silverleaf scurfpea Pediomelum cuspidatum (Pursh) Rydb. largebract Indian breadroot Pediomelum esculentum (Pursh) Rydb. breadroot scurfpea Pediomelum pentaphyllum (L.) Rydb. small Indian breadroot Petalostemon = Dalea Psoralea esculenta Pursh = Pediomelum esculentum Psoralea lanceolata Pursh = Psoralidium lanceolatum Psoralea pentaphylla L. = Pediomelum pentaphyllum Psoralea tenuiflora Pursh = Psoralidium tenuiflorum Psoralidium lanceolatum (Pursh) Rydb. lemon scurfpea Psoralidium tenuiflorum (Pursh) Rydb. slimflower scurfpea Robinia pseudoacacia L. black locust Sarothamnus scoparius (L.) Wimmer ex Koch = Cytisus scoparius 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 montana var. venosa (Eastw.) Jepson = Thermopsis gracilis var. gracilis Thermopsis rhombifolia (Nutt. ex Pursh) Nutt. ex Richards. prairie thermopsis Thermopsis rhombifolia var. montana (Nutt.) Isely mountain thermopsis Thermopsis rhombifolia var. rhombifolia (Nutt. ex Pursh) Nutt. ex Richards. prairie goldenbanner 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 dasyphyllum Torr. & Gray alpine clover Trifolium dasyphyllum ssp. uintense (Rydb.) J. Gillett Uinta clover Trifolium dubium Sibthorp suckling clover Trifolium eriocephalum Nutt. woollyhead clover Trifolium eriocephalum ssp. arcuatum (Piper) J. Gillett woollyhead clover Trifolium fragiferum L. strawberry clover Trifolium 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 latifolium (Hook.) Greene twin clover Trifolium longipes Nutt. longstalk clover Trifolium longipes ssp. reflexum (A. Nels.) J. Gillett droopflower clover Trifolium microcephalum Pursh smallhead clover Trifolium nanum Torr. dwarf clover Trifolium parryi Gray Parry's clover Trifolium parryi ssp. montanense (Rydb.) J. Gillett Parry's 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 tetrasperma (L.) Schreb. lentil vetch Vicia tetrasperma var. tetrasperma (L.) Moench lentil vetch Vicia villosa Roth winter vetch Vicia villosa ssp. varia (Host) Corb. winter vetch Vicia villosa ssp. villosa Roth winter vetch LEMNACEAE Lemna gibba L. swollen duckweed Lemna minor L. common duckweed Lemna trisulca L. star duckweed Lemna turionifera Landolt turion duckweed Spirodela polyrrhiza (L.) Schleid. common duckweed Wolffia borealis (Engelm. ex Hegelm.) Landolt ex Landolt & Wildi northern watermeal Wolffia braziliensis Weddell Brazilian watermeal Wolffia columbiana Karst. Columbian 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 acuminatum Hook. tapertip onion Allium brandegei S. Wats. Brandegee's onion Allium brevistylum S. Wats. shortstyle onion Allium canadense L. meadow garlic Allium canadense var. fraseri Ownbey Fraser meadow garlic Allium cernuum Roth nodding onion Allium cernuum var. cernuum Roth nodding onion Allium cernuum var. obtusum Cockerell ex J.F. Macbr. nodding onion Allium columbianum (Ownbey & Mingrone) P. Peterson, Annable & Rieseberg Columbian onion Allium fibrillum M.E. Jones Blue Mountain onion Allium geyeri S. Wats. Geyer's onion Allium geyeri var. tenerum M.E. Jones bulbil onion Allium parvum Kellogg small onion Allium schoenoprasum L. wild chives Allium schoenoprasum var. sibiricum (L.) Hartman wild chives Allium simillimum Henderson simil onion Allium textile A. Nels. & J.F. Macbr. textile 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. selwayensis (St. John) Ownbey Selway Mariposa lily Calochortus eurycarpus S. Wats. white Mariposa lily Calochortus gunnisonii S. Wats. Gunnison's Mariposa lily Calochortus gunnisonii var. gunnisonii S. Wats. Gunnison's Mariposa lily Calochortus macrocarpus Dougl. sagebrush Mariposa lily Calochortus macrocarpus var. macrocarpus Dougl. sagebrush Mariposa lily Calochortus nuttallii Torr. & Gray sego lily Camassia quamash (Pursh) Greene small camas Camassia quamash ssp. quamash (Pursh) Greene 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. grandiflorum Pursh yellow avalanchelily Fritillaria atropurpurea Nutt. spotted missionbells Fritillaria pudica (Pursh) Spreng. yellow missionbells Hemerocallis fulva (L.) L. orange daylily Hemerocallis fulva var. fulva (L.) L. orange daylily Leucocrinum montanum Nutt. ex Gray common starlily Lilium philadelphicum L. wood lily Lilium philadelphicum var. andinum (Nutt.) Ker-Gawl. wood lily Lloydia serotina (L.) Reichenb. common alplily Maianthemum canadense Desf. Canada beadruby Maianthemum racemosum (L.) Link feathery false Solomon's seal Maianthemum racemosum ssp. amplexicaule (Nutt.) LaFrankie western Solomon's seal Maianthemum stellatum (L.) Link starry false Solomon's seal Smilacina = Maianthemum Stenanthium occidentale Gray western stenanthium Streptopus amplexifolius (L.) DC. claspleaf twistedstalk Streptopus amplexifolius var. chalazatus Fassett tubercle twistedstalk Tofieldia glutinosa (Michx.) Pers. glutin tofieldia Tofieldia glutinosa ssp. montana C.L. Hitchc. tal tofieldia Tofieldia pusilla (Michx.) Pers. Scotch false asphodel Trillium ovatum Pursh Pacific trillium Trillium ovatum ssp. ovatum Pursh Pacific trillium Triteleia grandiflora Lindl. wild hyacinth Veratrum californicum Dur. California false hellebore Veratrum californicum var. californicum Dur. California false hellebore Veratrum viride Ait. American false hellebore Xerophyllum tenax (Pursh) Nutt. common beargrass Zigadenus elegans Pursh mountain deathcamas Zigadenus elegans ssp. 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 LIMNANTHACEAE Floerkea proserpinacoides Willd. false mermaidweed LINACEAE Linum australe Heller southern flax Linum australe var. australe Heller southern flax Linum compactum A. Nels. Wyoming flax Linum lewisii Pursh prairie flax Linum lewisii var. lewisii Pursh Lewis' flax Linum rigidum Pursh stiffstem flax Linum rigidum var. rigidum Pursh largeflower yellow flax Linum usitatissimum L. common flax LOASACEAE Mentzelia albicaulis (Dougl. ex Hook.) Dougl. ex Torr. & Gray whitestem 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 laevicaulis (Dougl. ex Hook.) Torr. & Gray smoothstem blazingstar Mentzelia laevicaulis var. laevicaulis (Dougl. ex Hook.) Torr. & Gray smoothstem blazingstar Mentzelia montana (A. Davids.) A. Davids. variegatedbract blazingstar Mentzelia nuda (Pursh) Torr. & Gray bractless blazingstar Mentzelia nuda var. stricta (Osterhout) Harrington bractless blazingstar Mentzelia pumila Nutt. ex Torr. & Gray dwarf mentzelia Mentzelia pumila var. pumila Nutt. ex Torr. & Gray dwarf mentzelia Mentzelia veatchiana Kellogg whitestem blazingstar LYCOPODIACEAE Diphasiastrum = Lycopodium 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 alpinum L. alpine clubmoss Lycopodium 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 lagopus (Laestad. ex Hartm.) Zinserl. ex Kuzen Lycopodium obscurum L. rare clubmoss Lycopodium sitchense Rupr. Sitka clubmoss LYTHRACEAE Ammannia robusta Heer & Regel grand redstem Lythrum alatum Pursh winged lythrum Lythrum alatum var. alatum Pursh winged lythrum Lythrum salicaria L. purple loosestrife Rotala ramosior (L.) Koehne lowland rotala MALVACEAE Abutilon theophrasti Medik. velvetleaf Alcea rosea L. hollyhock Althaea rosea (L.) Cav. = Alcea rosea 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 nicaeensis All. bull mallow Malva parviflora L. cheeseweed mallow Malva sylvestris L. high mallow 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. procera C.L. Hitchc. Oregon checkermallow Sphaeralcea coccinea (Nutt.) Rydb. scarlet globemallow Sphaeralcea coccinea ssp. coccinea (Nutt.) Rydb. scarlet 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 MARSILEACEAE Marsilea oligospora Goodding Pacific waterclover Marsilea vestita Hook. & Grev. hairy pepperwort MENYANTHACEAE Menyanthes trifoliata L. common buckbean MONOTROPACEAE Allotropa virgata Torr. & Gray ex Gray sugarstick Monotropa hypopithys L. pinesap Monotropa uniflora L. Indianpipe Pterospora andromedea Nutt. woodland pinedrops NAJADACEAE Najas flexilis (Willd.) Rostk. & Schmidt nodding waternymph Najas guadalupensis (Spreng.) Magnus southern waternymph Najas guadalupensis var. guadalupensis (Spreng.) Magnus Guadalupe waternymph NYCTAGINACEAE Abronia fragrans Nutt. ex Hook. snowball sand verbena Mirabilis hirsuta (Pursh) MacM. hairy four o'clock Mirabilis linearis (Pursh) Heimerl narrowleaf four o'clock Mirabilis nyctaginea (Michx.) MacM. heartleaf four o'clock Tripterocalyx micranthus (Torr.) Hook. smallflower sandverbena 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 odorata Ait. American white waterlily Nymphaea tetragona Georgi pygmy waterlily OLEACEAE Fraxinus pennsylvanica Marsh. green ash ONAGRACEAE Boisduvalia = Epilobium Calylophus serrulatus (Nutt.) Raven yellow sundrops Camissonia andina (Nutt.) Raven sundrops eveningprimrose Camissonia breviflora (Torr. & Gray) Raven fewflower eveningprimrose Camissonia minor (A. Nels.) Raven small eveningprimrose Camissonia scapoidea (Nutt. ex Torr. & Gray) Raven barestem eveningprimrose Camissonia scapoidea ssp. brachycarpa (Raven) Raven Paiute suncup Camissonia subacaulis (Pursh) Raven diffuseflower eveningprimrose Chamaenerion angustifolium (L.) Scop. = Epilobium angustifolium ssp. angustifolium 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 angustifolium ssp. angustifolium L. fireweed Epilobium angustifolium ssp. circumvagum Mosquin fireweed Epilobium brachycarpum K. Presl autumn willowweed 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 halleanum Hausskn. glandular willowherb Epilobium hornemannii Reichenb. Hornemann's willowherb Epilobium latifolium L. dwarf fireweed Epilobium leptophyllum Raf. bog willowherb Epilobium minutum Lindl. ex Lehm. small willowweed Epilobium oregonense Hausskn. slimstem willowweed Epilobium palustre L. marsh willowherb Epilobium pygmaeum (Speg.) Hoch & Raven Epilobium saximontanum Hausskn. Rocky Mountain willowherb Epilobium suffruticosum Nutt. shrub willowherb 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 humile Juss. dwarf groundsmoke Gayophytum racemosum Torr. & Gray blackfoot groundsmoke Gayophytum ramosissimum Torr. & Gray pinyon groundsmoke Oenothera albicaulis Pursh whitest eveningprimrose Oenothera cespitosa Nutt. tufted eveningprimrose Oenothera cespitosa ssp. cespitosa Nutt. tufted eveningprimrose Oenothera elata Kunth Hooker's eveningprimrose Oenothera flava (A. Nels.) Garrett yellow eveningprimrose Oenothera nuttallii Sweet Nuttall's eveningprimrose Oenothera pallida Lindl. pale eveningprimrose Oenothera pallida ssp. pallida Lindl. pale eveningprimrose Oenothera perennis L. small eveningprimrose Oenothera villosa Thunb. hairy eveningprimrose Oenothera villosa ssp. villosa Thunb. hairy eveningprimrose OPHIOGLOSSACEAE Botrychium ascendens W.H. Wagner trianglelobe moonwort Botrychium crenulatum W.H. Wagner scalloped moonwort Botrychium hesperium (Maxon & Clausen) W.H. Wagner & Lellinger western moonwort Botrychium lanceolatum (Gmel.) Angstr. lanceleaf grapefern Botrychium lanceolatum var. lanceolatum (Gmel.) Angstr. lanceleaf grapefern Botrychium lunaria (L.) Sw. common moonwort Botrychium matricariifolium (A. Braun ex Dowell) A. Braun ex Koch matricary grapefern Botrychium minganense Victorin Mingan moonwort Botrychium montanum W.H. Wagner mountain moonwort Botrychium multifidum (Gmel.) Trev. leathery grapefern Botrychium paradoxum W.H. Wagner peculiar moonwort Botrychium pinnatum St. John northern moonwort Botrychium spathulatum W.H. Wagner spathulate botrychium Botrychium virginianum (L.) Sw. rattlesnake fern Ophioglossum pusillum Raf. northern adderstongue ORCHIDACEAE Amerorchis rotundifolia (Banks ex Pursh) Hulten roundleaf orchid Calypso bulbosa (L.) Oakes fairyslipper orchid Calypso bulbosa var. americana (R. Br. ex Ait. f.) Luer fairyslipper orchid Coeloglossum viride (L.) Hartman longbract frog orchid Coeloglossum viride var. virescens (Muhl. ex Willd.) Luer longbract frog orchid Coeloglossum viride var. viride (L.) Hartman longbract frog 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 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 Cypripedium passerinum Richards. sparrowegg lady's slipper Epipactis gigantea Dougl. ex Hook. giant helleborine Epipactis helleborine (L.) Crantz 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 Habenaria viridis (L.) R. Br. ex Ait. f. = Coeloglossum viride var. viride 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 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 sparsiflora (S. Wats.) Schlechter canyon bog orchid Platanthera sparsiflora var. sparsiflora (S. Wats.) Schlechter canyon bog orchid Platanthera stricta Lindl. Modoc bog orchid Spiranthes romanzoffiana Cham. hooded ladiestresses OROBANCHACEAE Orobanche corymbosa (Rydb.) Ferris flattop broomrape Orobanche fasciculata Nutt. clustered broomrape Orobanche ludoviciana Nutt. Louisiana broomrape Orobanche ludoviciana ssp. ludoviciana Nutt. sand broomrape Orobanche uniflora L. oneflowered broomrape OXALIDACEAE Oxalis corniculata L. creeping woodsorrel Oxalis dillenii Jacq. Dillen's oxalis PAEONIACEAE Paeonia brownii Dougl. ex Hook. Brown's peony PAPAVERACEAE Argemone polyanthemos (Fedde) G.B. Ownbey crested pricklypoppy Glaucium corniculatum (L.) J.H. Rudolph blackspot hornpoppy Papaver argemone L. long pricklyhead poppy Papaver lapponicum (Tolm.) Nordh. Arctic poppy Papaver lapponicum ssp. occidentale (Lundstr.) Knaben Lapland poppy Papaver pygmaeum Rydb. pygmy poppy Papaver rhoeas L. corn poppy PINACEAE 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 glauca (Moench) Voss white 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 flexilis James limber pine 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 aristata Michx. largebracted plantain Plantago australis Lam. Mexican plantain Plantago australis ssp. hirtella (Kunth) Rahn Mexican plantain Plantago canescens M.F. Adams gray pubescent plantain 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 rugelii Dcne. blackseed 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 grandiflora Dougl. ex Lindl. largeflower mountaintrumpet Collomia linearis Nutt. narrowleaf mountaintrumpet Collomia tinctoria Kellogg yellowstaining mountaintrumpet Gilia inconspicua (Sm.) Sweet shy gilia Gilia leptomeria Gray sand gilia Gilia tenerrima Gray delicate gilia Gilia tweedyi Rydb. Tweedy's gila Ipomopsis aggregata (Pursh) V. Grant skyrocket gilia Ipomopsis aggregata ssp. aggregata (Pursh) V. Grant skyrocket gilia Ipomopsis congesta (Hook.) V. Grant ballhead gilia Ipomopsis congesta ssp. congesta (Hook.) V. Grant ballhead gilia Ipomopsis congesta ssp. crebrifolia (Nutt.) Day ballhead gilia Ipomopsis pumila (Nutt.) V. Grant dwarf gilia Ipomopsis spicata (Nutt.) V. Grant spiked gilia Ipomopsis spicata ssp. capitata (Gray) V. Grant spiked gilia Leptodactylon caespitosum Nutt. mat pricklygilia Leptodactylon pungens (Torr.) Torr. ex Nutt. granite pricklygilia 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 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. propinqua (Suksdorf) Day near navarretia Navarretia leucocephala Benth. whitehead navarretia Navarretia leucocephala ssp. minima (Nutt.) Day least navarretia Navarretia squarrosa (Eschsch.) Hook. & Arn. skunkbush Phlox albomarginata M.E. Jones lostriver phlox Phlox albomarginata ssp. albomarginata M.E. Jones whitemargin phlox Phlox alyssifolia Greene alyssumleaf phlox Phlox alyssifolia ssp. collina (Rydb.) Wherry alyssumleaf phlox Phlox andicola E. Nels. prairie phlox Phlox caespitosa Nutt. tufted phlox Phlox diffusa Benth. spreading phlox Phlox diffusa ssp. longistylis Wherry spreading phlox Phlox diffusa ssp. scleranthifolia (Rydb.) 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. hoodii Richards. Hood's phlox Phlox hoodii ssp. muscoides (Nutt.) Wherry musk phlox Phlox hoodii ssp. viscidula (Wherry) Wherry carpet phlox Phlox kelseyi Britt. Kelsey's phlox Phlox kelseyi ssp. kelseyi Britt. Kelsey's phlox Phlox longifolia Nutt. longleaf phlox Phlox longifolia ssp. longifolia Nutt. longleaf phlox Phlox missoulensis Wherry Missoula 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 multiflora ssp. patula (A. Nels.) Wherry Rocky Mountain phlox Phlox pulvinata (Wherry) Cronq. cushion phlox Phlox speciosa Pursh showy phlox Phlox speciosa ssp. occidentalis (Dur. ex Torr.) Wherry showy phlox 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. pulcherrimum Hook. pretty Jacobsladder Polemonium viscosum Nutt. sticky polemonium POLYGALACEAE Polygala alba Nutt. white milkwort Polygala verticillata L. whorled milkwort POLYGONACEAE Eriogonum androsaceum Benth. rockjasmine buckwheat Eriogonum annuum Nutt. annual 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. muhlickii Reveal Muhlick's buckwheat Eriogonum cernuum Nutt. nodding buckwheat Eriogonum cernuum var. cernuum Nutt. nodding buckwheat Eriogonum effusum Nutt. spreading buckwheat Eriogonum effusum var. rosmarinoides Benth. spreading 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 flavum var. polyphyllum (Small ex Rydb.) M.E. Jones alpine golden buckwheat Eriogonum heracleoides Nutt. parsnipflower buckwheat Eriogonum heracleoides var. heracleoides Nutt. parsnipflower buckwheat Eriogonum lagopus Rydb. parasol buckwheat Eriogonum mancum Rydb. imperfect buckwheat Eriogonum microthecum Nutt. slender buckwheat Eriogonum microthecum var. laxiflorum Hook. slender buckwheat Eriogonum microthecum var. simpsonii (Benth.) Reveal Simpson's buckwheat Eriogonum ovalifolium Nutt. cushion buckwheat Eriogonum ovalifolium var. depressum Blank. cushion buckwheat Eriogonum ovalifolium var. ochroleucum (Small ex Rydb.) M.E. Peck cushion buckwheat Eriogonum ovalifolium var. ovalifolium Nutt. cushion buckwheat Eriogonum ovalifolium var. pansum Reveal cushion buckwheat Eriogonum ovalifolium var. purpureum (Nutt.) Dur. cushion buckwheat Eriogonum pauciflorum Pursh fewflower buckwheat Eriogonum pauciflorum var. gnaphalodes (Benth.) Reveal fewflower buckwheat Eriogonum pauciflorum var. pauciflorum Pursh fewflower buckwheat Eriogonum pyrolifolium Hook. Shasta buckwheat Eriogonum pyrolifolium var. coryphaeum Torr. & Gray Shasta buckwheat Eriogonum 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. proliferum (Torr. & Gray) C.L. Hitchc. Blue Mountain buckwheat Eriogonum umbellatum Torr. sulphur wildbuckwheat Eriogonum umbellatum var. aureum (Gandog.) Reveal sulphurflower buckwheat Eriogonum umbellatum var. dichrocephalum Gandog. sulphurflower buckwheat Eriogonum umbellatum var. majus Hook. sulphurflower buckwheat Eriogonum umbellatum var. stellatum (Benth.) M.E. Jones sulphurflower buckwheat Eriogonum umbellatum var. umbellatum Torr. sulphurflower buckwheat Fagopyrum esculentum Moench fagopyrum Koenigia islandica L. island purslane Oxyria digyna (L.) Hill alpine mountainsorrel 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 arenastrum Jord. ex Boreau ovalleaf knotweed Polygonum aviculare L. prostrate 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 erectum L. erect knotweed Polygonum hydropiper L. marshpepper knotweed Polygonum lapathifolium L. curlytop knotweed Polygonum lapathifolium var. lapathifolium L. curlytop knotweed Polygonum lapathifolium var. salicifolium Sibthorp curlytop knotweed Polygonum leptocarpum B.L. Robins. narrowpoint knotweed Polygonum minimum S. Wats. broadleaf knotweed Polygonum pensylvanicum L. Pennsylvania smartweed Polygonum persicaria L. spotted ladysthumb Polygonum phytolaccifolium Meisn. ex Small poke 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 viviparum L. alpine bistort Rumex acetosa L. garden sorrel 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 maritimus L. golden dock Rumex obtusifolius L. bitter dock Rumex patientia L. patience 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 stenophyllus Ledeb. narrowleaf dock Rumex venosus Pursh veiny dock POLYPODIACEAE Polypodium hesperium Maxon western polypody PONTEDERIACEAE Heteranthera dubia (Jacq.) MacM. grassleaf mudplantain PORTULACACEAE Cistanthe umbellata (Torr.) Hershkovitz Mt. Hood pussypaws 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. lanceolata Pursh lanceleaf springbeauty Claytonia lanceolata var. multiscapa (Rydb.) C.L. Hitchc. 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 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 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 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 Portulaca oleracea L. little hogweed Talinum calycinum Engelm. largeflower fameflower POTAMOGETONACEAE Potamogeton alpinus Balbis alpine pondweed Potamogeton amplifolius Tuckerman largeleaf pondweed Potamogeton crispus L. curly 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 obtusifolius Mert. & Koch bluntleaf 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 chamaejasme Wulfen sweetflower rockjasmine Androsace occidentalis Pursh western rockjasmine Androsace septentrionalis L. pygmyflower rockjasmine Androsace septentrionalis ssp. puberulenta (Rydb.) G.T. Robbins 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 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 montana Gray Rocky Mountain dwarfprimrose Glaux maritima L. sea milkwort Lysimachia ciliata L. fringed loosestrife Lysimachia thyrsiflora L. tufted loosestrife Primula alcalina Cholewa & D. Henderson bluedome primrose Primula incana M.E. Jones silvery primrose Primula parryi Gray Parry's primrose PTERIDACEAE Adiantum aleuticum (Rupr.) Paris Aleutian maidenhair Aspidotis densa (Brack.) Lellinger Indian's dream Athyrium americanum (Butters) Maxon alpine ladyfern Athyrium filix-femina (L.) Roth common ladyfern Athyrium filix-femina ssp. cyclosorum (Rupr.) C. Christens. subarctic ladyfern Cheilanthes feei T. Moore slender lipfern Cheilanthes gracillima D.C. Eat. lace lipfern Cryptogramma acrostichoides R. Br. American rockbrake Cryptogramma cascadensis E.R. Alverson Cascade rockbrake Cryptogramma stelleri (Gmel.) Prantl fragile rockbrake Cystopteris fragilis (L.) Bernh. brittle bladderfern Cystopteris montana (Lam.) Bernh. ex Desv. mountain 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 Gymnocarpium dryopteris (L.) Newman western oakfern Pellaea atropurpurea (L.) Link purple cliffbrake Pellaea breweri D.C. Eat. Brewer's cliffbrake Pellaea glabella Mett. ex Kuhn dwarf cliffbrake Pellaea glabella ssp. occidentalis (E. Nels.) Windham western dwarf cliffbrake Pellaea glabella ssp. simplex (Butters) A.& D. Love smooth cliffbrake Polystichum andersonii Hopkins Anderson's hollyfern Polystichum kruckebergii W.H. Wagner Kruckeberg'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 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 Actaea rubra ssp. rubra (Ait.) Willd. red baneberry Adonis aestivalis L. summer pheasant's eye Anemone canadensis L. Canadian anemone Anemone cylindrica Gray candle anemone Anemone lithophila Rydb. Little Belt Mountain thimbleweed Anemone ludoviciana Nutt. = Pulsatilla patens ssp. multifida Anemone multifida (Pritz.) Zamels, non Poir. = Pulsatilla patens ssp. multifida Anemone multifida Poir. Pacific anemone Anemone multifida var. hudsoniana DC. Hudson's anemone Anemone multifida var. multifida Poir. Pacific anemone Anemone nuttalliana DC. = Pulsatilla patens ssp. multifida Anemone occidentalis S. Wats. = Pulsatilla occidentalis Anemone parviflora Michx. smallflowered anemone Anemone patens var. multifida Pritz. = Pulsatilla patens ssp. multifida Anemone piperi Britt. ex Rydb. Piper's anemone Anemone tetonensis Porter ex Britt. Teton anemone Aquilegia brevistyla Hook. smallflower columbine 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. miniata A. Nels. & J.F. Macbr. yellow columbine Aquilegia formosa Fisch. ex DC. western columbine Aquilegia jonesii Parry Jones' columbine Aquilegia jonesii var. elatior (Standl.) Boothman blue limestone columbine 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 columbiana var. tenuiloba (Gray) J. Pringle rock clematis Clematis hirsutissima Pursh hairy clematis Clematis hirsutissima var. hirsutissima Pursh hairy clematis Clematis hirsutissima var. scottii (Porter) Erickson Scott's clematis Clematis ligusticifolia Nutt. western white clematis Clematis ligusticifolia var. ligusticifolia Nutt. western white clematis Clematis occidentalis (Hornem.) DC. western blue virginsbower Clematis occidentalis var. grosseserrata (Rydb.) J. Pringle western blue virginsbower Clematis occidentalis var. occidentalis (Hornem.) DC. western blue virginsbower Consolida ajacis (L.) Schur doubtful knight's spur Coptis occidentalis (Nutt.) Torr. & Gray Idaho goldthread Delphinium X burkei Greene Burk larkspur Delphinium X occidentale (S. Wats.) S. Wats. duncecap larkspur Delphinium andersonii Gray Anderson's larkspur Delphinium bicolor Nutt. little larkspur Delphinium depauperatum Nutt. slim larkspur Delphinium geyeri Greene Geyer's larkspur Delphinium glaucescens Rydb. smooth larkspur Delphinium glaucum S. Wats. Sierra 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 Myosurus apetalus var. montanus (Campbell) Whitemore Myosurus aristatus Benth. bristle mousetail Myosurus minimus ssp. minimus L. tiny mousetail Myosurus minumus L. tiny mousetail Pulsatilla hirsutissima (Pursh) Britt. = Pulsatilla patens ssp. multifida Pulsatilla ludoviciana Heller = Pulsatilla patens ssp. multifida Pulsatilla nuttalliana (DC.) Spreng. = Pulsatilla patens ssp. multifida Pulsatilla occidentalis (S. Wats.) Freyn white pasqueflower Pulsatilla patens (L.) P. Mill. American pasqueflower Pulsatilla patens ssp. hirsutissima (Pursh) Zamels = Pulsatilla patens ssp. multifida Pulsatilla patens ssp. multifida (Pritz.) Zamels cutleaf anemone 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 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 aquatilis L. whitewater crowfoot Ranunculus cardiophyllus Hook. heartleaf buttercup Ranunculus cymbalaria Pursh alkali buttercup Ranunculus eschscholtzii Schlecht. Eschscholtz's buttercup Ranunculus eximius Greene tundra 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 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 occidentalis Nutt. western buttercup Ranunculus orthorhynchus Hook. straightbeak buttercup Ranunculus orthorhynchus var. orthorhynchus Hook. straightbeak buttercup Ranunculus pedatifidus Sm. surefoot buttercup Ranunculus pedatifidus var. affinis (R. Br.) L. Benson northern buttercup Ranunculus pensylvanicus L. f. Pennsylvania buttercup Ranunculus populago Greene popular buttercup Ranunculus pygmaeus Wahlenb. pygmy buttercup Ranunculus pygmaeus var. langianus Nathorst pygmy buttercup Ranunculus pygmaeus var. pygmaeus Wahlenb. pygmy buttercup Ranunculus repens L. creeping buttercup Ranunculus repens var. glabratus DC. creeping buttercup Ranunculus repens var. repens L. creeping buttercup Ranunculus rhomboideus Goldie prairie 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 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 RESEDACEAE Reseda lutea L. yellow mignonette RHAMNACEAE Ceanothus herbaceus Raf. Jersey tea 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 cathartica L. common buckthorn Rhamnus purshiana DC. = Frangula purshiana ROSACEAE Agrimonia gryposepala Wallr. tall hairy agrimony Agrimonia striata Michx. roadside agrimony Alchemilla xanthochlora Rothm. dewcup 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 humilis Wieg. low serviceberry Amelanchier pumila (Torr. & Gray) Nutt. ex M. Roemer dwarf serviceberry Amelanchier utahensis Koehne Utah serviceberry Amelanchier utahensis ssp. utahensis Koehne Utah serviceberry Argentina anserina (L.) Rydb. silverweed cinquefoil Cercocarpus intricatus S. Wats. littleleaf mountain mahogany Cercocarpus ledifolius Nutt. curlleaf mountain mahogany Cercocarpus ledifolius var. intercedens Schneid. curlleaf mountain mahogany Cercocarpus ledifolius var. ledifolius Nutt. curlleaf mountain mahogany Cercocarpus montanus Raf. true mountain mahogany Chamaerhodos erecta (L.) Bunge little rose Chamaerhodos erecta ssp. nuttallii (Pickering ex Rydb.) Hulten Nuttall's little rose 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 douglasii var. rivularis (Nutt.) Sarg. = Crataegus rivularis Crataegus monogyna Jacq. oneseed hawthorn Crataegus rivularis Nutt. river hawthorn Crataegus succulenta Schrad. ex Link fleshy hawthorn Dryas drummondii Richards. ex Hook. Drummond's dryad Dryas integrifolia Vahl entireleaf mountainavens Dryas octopetala L. white dryad Dryas octopetala ssp. octopetala L. eightpetal mountainavens Dryas octopetala ssp. octopetala var. angustifolia C.L. Hitchc. eightpetal mountainavens 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 Geum aleppicum Jacq. yellow avens Geum canadense Jacq. white avens Geum macrophyllum Willd. largeleaf avens Geum macrophyllum var. macrophyllum Willd. largeleaf avens Geum macrophyllum var. perincisum (Rydb.) Raup largeleaf avens Geum rossii (R. Br.) Ser. Ross' avens Geum rossii var. rossii (R. Br.) Ser. Ross' avens Geum rossii var. turbinatum (Rydb.) C.L. Hitchc. Ross' avens Geum triflorum Pursh prairiesmoke Geum triflorum var. canescens (Greene) Kartesz & Gandhi old man's whiskers Geum triflorum var. ciliatum (Pursh) Fassett old man's whiskers Geum triflorum var. triflorum Pursh old man's whiskers Holodiscus discolor (Pursh) Maxim. oceanspray Horkelia fusca Lindl. tawny horkelia 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 Malus sylvestris P. Mill. apple Pentaphylloides floribunda (Pursh) A. Love shrubby cinquefoil Petrophyton caespitosum (Nutt.) Rydb. mat rockspirea Physocarpus malvaceus (Greene) Kuntze mallow ninebark Physocarpus monogynus (Torr.) Coult. mountain 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 biennis Greene biennial cinquefoil Potentilla bipinnatifida Dougl. ex Hook. tansy cinquefoil Potentilla bipinnatifida var. bipinnatifida Dougl. ex Hook. tansy cinquefoil Potentilla bipinnatifida var. glabrata (Lehm. ex Hook.) Kohli & Packer tansy 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 effusa Dougl. ex Lehm. branched 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. 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 gracilis var. gracilis Dougl. ex Hook. graceful cinquefoil Potentilla hippiana Lehm. woolly cinquefoil Potentilla hippiana var. hippiana Lehm. woolly cinquefoil Potentilla hookeriana Lehm. Hooker's cinquefoil Potentilla macounii Rydb. Macoun's cinquefoil Potentilla multisecta (S. Wats.) Rydb. featherleaf cinquefoil Potentilla nana Willd. ex Schlecht. arctic cinquefoil Potentilla nivea L. snow cinquefoil Potentilla nivea var. pentaphylla Lehm. fiveleaf cinquefoil Potentilla norvegica L. Norwegian cinquefoil Potentilla norvegica ssp. monspeliensis (L.) Aschers. & Graebn. Norwegian cinquefoil Potentilla ovina Macoun sheep cinquefoil Potentilla ovina var. decurrens (S. Wats.) Welsh & Johnston sheep cinquefoil Potentilla ovina var. ovina Macoun sheep cinquefoil Potentilla palustris (L.) Scop. = Comarum palustre Potentilla paradoxa Nutt. Paradox cinquefoil Potentilla pensylvanica L. Pennsylvania cinquefoil Potentilla plattensis Nutt. Platte River cinquefoil Potentilla pulcherrima Lehm. beautiful cinquefoil 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 Potentilla rubricaulis Lehm. Rocky Mountain cinquefoil Potentilla uniflora Ledeb. oneflower cinquefoil Prunus americana Marsh. American 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 pensylvanica L. f. pin cherry Prunus pumila L. sand cherry Prunus pumila var. besseyi (Bailey) Gleason western sandcherry Prunus virginiana L. common 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 arkansana Porter prairie rose Rosa blanda Ait. smooth 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 woodsii Lindl. Woods' rose Rosa woodsii var. ultramontana (S. Wats.) Jepson Woods' rose Rosa woodsii var. woodsii Lindl. Woods' rose Rubus arcticus L. arctic blackberry Rubus arcticus ssp. acaulis (Michx.) Focke dwarf 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 parviflorus Nutt. thimbleberry Rubus parviflorus var. parviflorus Nutt. western thimbleberry Rubus pedatus Sm. strawberryleaf raspberry Rubus pubescens Raf. dwarf red blackberry Rubus pubescens var. pubescens Raf. dwarf red blackberry Rubus strigosus Michx. = Rubus idaeus ssp. strigosus Rubus ursinus Cham. & Schlecht. California blackberry Sanguisorba annua (Nutt. ex Hook.) Torr. & Gray prairie burnet Sanguisorba minor Scop. small burnet Sanguisorba minor ssp. muricata (Spach) Nordborg small burnet Sibbaldia procumbens L. creeping sibbaldia 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 splendens Baumann ex K. Koch 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 palustre L. common marsh bedstraw Galium trifidum L. threepetal bedstraw Galium trifidum ssp. columbianum (Rydb.) Hulten threepetal bedstraw Galium trifidum ssp. subbiflorum (Wieg.) Piper threepetal bedstraw Galium trifidum ssp. trifidum L. threepetal bedstraw Galium triflorum Michx. fragrant bedstraw Galium verum L. Yellow Spring bedstraw Kelloggia galioides Torr. milk kelloggia RUPPIACEAE Ruppia maritima L. widgeongrass SALICACEAE Populus X acuminata Rydb. (pro sp.) lanceleaf cottonwood Populus alba L. white poplar Populus angustifolia James narrowleaf cottonwood Populus balsamifera L. balsam poplar Populus balsamifera ssp. trichocarpa (Torr. & Gray ex Hook.) Brayshaw black cottonwood Populus deltoides Bartr. ex Marsh. eastern cottonwood Populus deltoides ssp. deltoides Bartr. ex Marsh. eastern cottonwood Populus deltoides ssp. monilifera (Ait.) Eckenwalder plains cottonwood Populus tremuloides Michx. quaking aspen Populus trichocarpa Torr. & Gray ex Hook. = Populus balsamifera ssp. trichocarpa Salix alba L. white willow Salix alba var. vitellina (L.) Stokes golden willow 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 discolor Muhl. pussy willow Salix drummondiana Barratt ex Hook. Drummond's willow Salix eastwoodiae Cockerell ex Heller mountain willow Salix eriocephala Michx. Missouri River willow Salix exigua Nutt. sandbar willow Salix farriae Ball Farr's willow Salix fragilis L. crack 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 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 pentandra L. laurel willow Salix petiolaris Sm. meadow 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 rotundifolia Trautv. least willow Salix rotundifolia ssp. dodgeana (Rydb.) Argus timberline willow Salix scouleriana Barratt ex Hook. Scouler's willow Salix serissima (Bailey) Fern. autumn willow Salix sitchensis Sanson ex Bong. Sitka willow Salix tweedyi (Bebb ex Rose) Ball Tweedy's willow Salix vestita Pursh rock 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 Boykinia heucheriformis (Rydb.) Rosendahl alumroot 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 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. septentrionalis Rosendahl, Butters & Lakela roundleaf alumroot Heuchera flabellifolia Rydb. Bridger Mountain alumroot Heuchera flabellifolia var. flabellifolia Rydb. shortstem alumroot Heuchera grossulariifolia Rydb. gooseberryleaf alumroot Heuchera grossulariifolia var. grossulariifolia Rydb. gooseberryleaf alumroot Heuchera parvifolia Nutt. ex Torr. & Gray littleleaf alumroot Heuchera parvifolia var. utahensis (Rydb.) Garrett Utah alumroot Heuchera richardsonii R. Br. Richardson's 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 nuda L. naked miterwort Mitella pentandra Hook. fivestamen miterwort Mitella stauropetala Piper smallflower miterwort Mitella stauropetala var. stauropetala Piper smallflower miterwort Mitella trifida Graham threeparted miterwort Mitella trifida var. trifida Graham threeparted miterwort Mitella trifida var. violacea (Rydb.) Rosendahl threeparted miterwort Parnassia fimbriata Koenig Rocky Mountain parnassia Parnassia fimbriata var. fimbriata Koenig fringed grass of Parnassus Parnassia kotzebuei Cham. ex Spreng. Kotzebue's grass of Parnassus Parnassia palustris L. northern grass of Parnassus Parnassia palustris var. montanensis (Fern. & Rydb. ex Rydb.) C.L. Hitchc. northern grass of Parnassus Parnassia parviflora DC. smallflower grass of Parnassus Saxifraga adscendens L. wedgeleaf saxifrage Saxifraga adscendens ssp. oregonensis (Raf.) Bacig. small saxifrage Saxifraga apetala Piper western swamp saxifrage Saxifraga bronchialis L. yellowdot saxifrage Saxifraga bronchialis ssp. austromontana (Wieg.) Piper matted saxifrage Saxifraga cernua L. nodding saxifrage Saxifraga cespitosa L. tufted alpine saxifrage Saxifraga cespitosa ssp. monticola (Small) Porsild tufted alpine saxifrage Saxifraga chrysantha Gray goldbloom saxifrage Saxifraga ferruginea Graham rustyhair saxifrage Saxifraga ferruginea var. ferruginea Graham rustyhair saxifrage Saxifraga ferruginea var. vreelandii (Small) Engl. & Irmsch. Vreeland's saxifrage Saxifraga flagellaris Willd. ex Sternb. whiplash saxifrage Saxifraga hyperborea R. Br. pygmy saxifrage Saxifraga integrifolia Hook. wholeleaf 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 nelsoniana D. Don heartleaf saxifrage Saxifraga nelsoniana ssp. nelsoniana D. Don brook saxifrage Saxifraga nidifica Greene 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 tempestiva Elvander & Denton storm saxifrage Saxifraga tolmiei Torr. & Gray Tolmie's saxifrage Suksdorfia ranunculifolia (Hook.) Engl. buttercup suksdorfia Suksdorfia violacea Gray violet suksdorfia Sullivantia hapemanii (Coult. & Fisher) Coult. Hapeman's coolwort Sullivantia hapemanii var. hapemanii (Coult. & Fisher) Coult. Hapeman's sullivantia 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 SCHEUCHZERIACEAE Scheuchzeria palustris L. scheuchzeria Scheuchzeria palustris ssp. americana (Fern.) Hulten American scheuchzeria SCROPHULARIACEAE Bacopa rotundifolia (Michx.) Wettst. disk waterhyssop Besseya rubra (Dougl. ex Hook.) Rydb. red besseya Besseya wyomingensis (A. Nels.) Rydb. Wyoming besseya Castilleja Mutis ex L. f. Indian paintbrush Castilleja angustifolia (Nutt.) G. Don northwestern Indian paintbrush Castilleja angustifolia var. angustifolia (Nutt.) G. Don northwestern Indian paintbrush Castilleja applegatei Fern. wavyleaf Indian paintbrush Castilleja applegatei ssp. martinii (Abrams) Chuang & Heckard Castilleja cervina Greenm. deer 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 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 nivea Pennell & Ownbey snow Indian paintbrush Castilleja occidentalis Torr. western Indian paintbrush Castilleja pallescens (Gray) Greenm. 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 sessiliflora Pursh downy paintedcup Castilleja sulphurea Rydb. sulphur Indian paintbrush Chionophila tweedyi (Canby & Rose) Henderson Tweedy's snowlover 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 ramosus Nutt. ex Benth. bushy bird's beak Digitalis purpurea L. purple foxglove Digitalis purpurea var. purpurea L. purple foxglove Euphrasia frigida Pugsley coldweather eyebright Euphrasia subarctica Raup arctic eyebright Gratiola ebracteata Benth. ex A. DC. bractless hedgehyssop Gratiola neglecta Torr. clammy hedgehyssop Limosella aquatica L. water mudwort Linaria canadensis (L.) Chaz. = Nuttallanthus canadensis Linaria dalmatica (L.) P. Mill. Dalmatian toadflax Linaria dalmatica ssp. dalmatica (L.) P. Mill. Dalmatian toadflax Linaria texana Scheele = Nuttallanthus texanus Linaria vulgaris P. Mill. butter and eggs Melampyrum lineare Desr. narrowleaf cowwheat Melampyrum lineare var. lineare Desr. American cowwheat Mimulus breweri (Greene) Coville Brewer's monkeyflower Mimulus floribundus Lindl. manyflowered monkeyflower Mimulus glabratus Kunth roundleaf monkeyflower Mimulus glabratus var. jamesii (Torr. & Gray ex Benth.) Gray James' 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 suksdorfii Gray Suksdorf's monkeyflower Mimulus tilingii Regel Tiling's monkeyflower Mimulus tilingii var. tilingii Regel Tiling's monkeyflower Nuttallanthus canadensis (L.) D.A. Sutton Canada toadflax Nuttallanthus texanus (Scheele) D.A. Sutton Texas toadflax Orthocarpus luteus Nutt. yellow owlclover Orthocarpus tenuifolius (Pursh) Benth. thinleaved 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. 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 cystopteridifolia Rydb. fernleaved pedicularis Pedicularis groenlandica Retz. elephanthead lousewort Pedicularis groenlandica ssp. groenlandica Retz. Greenland lousewort Pedicularis groenlandica ssp. surrecta (Benth.) Piper Greenland lousewort Pedicularis oederi Vahl ex Hornem. Oeder's lousewort Pedicularis parryi Gray Parry's lousewort Pedicularis parryi ssp. purpurea (Parry) G.D. Carr Rocky Mountain lousewort Pedicularis pulchella Pennell mountain lousewort Pedicularis racemosa Dougl. ex Benth. sickletop lousewort Pedicularis racemosa ssp. alba Pennell sickletop lousewort Penstemon albertinus Greene Alberta beardtongue Penstemon albidus Nutt. white penstemon Penstemon angustifolius Nutt. ex Pursh broadbeard beardtongue Penstemon angustifolius var. angustifolius Nutt. ex Pursh broadbeard beardtongue Penstemon arenicola A. Nels. sand penstemon 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 caryi Pennell Cary's beardtongue Penstemon confertus Dougl. ex Lindl. yellow penstemon Penstemon 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 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 glaber Pursh sawsepal penstemon Penstemon gracilis Nutt. lilac penstemon Penstemon gracilis var. gracilis Nutt. lilac penstemon Penstemon laricifolius Hook. & Arn. larchleaf beardtongue Penstemon lemhiensis (Keck) Keck & Cronq. Lemhi penstemon Penstemon lyallii (Gray) Gray Lyall's beardtongue Penstemon montanus Greene mountain penstemon Penstemon montanus var. montanus Greene cordroot beardtongue Penstemon nitidus Dougl. ex Benth. waxleaf penstemon Penstemon nitidus var. polyphyllus (Pennell) Cronq. waxleaf penstemon Penstemon payettensis A. Nels. & J.F. Macbr. Payette beardtongue Penstemon procerus Dougl. ex Graham littleflower penstemon Penstemon procerus var. procerus Dougl. ex Graham pincushion 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. rydbergii A. Nels. swollen 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 Scrophularia lanceolata Pursh lanceleaf figwort Synthyris canbyi Pennell Mission Mountain kittenstails 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 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 cusickii Gray Cusick's speedwell Veronica longifolia L. longleaf speedwell Veronica officinalis L. common gypsyweed Veronica officinalis var. officinalis L. common gypsyweed 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 verna L. spring 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 selaginoides (L.) Beauv. ex Mart. & Schrank club spikemoss Selaginella wallacei Hieron. Wallace's spikemoss Selaginella watsonii Underwood Watson's spikemoss SMILACACEAE Smilax herbacea L. smooth carrionflower SOLANACEAE Datura stramonium L. jimsonweed Hyoscyamus niger L. black henbane Lycium barbarum L. matrimonyvine Nicotiana attenuata Torr. ex S. Wats. coyote tobacco Physalis hederifolia Gray ivyleaf groundcherry Physalis hederifolia var. comata (Rydb.) Waterfall ivyleaf groundcherry Physalis heterophylla Nees clammy groundcherry Physalis hispida (Waterfall) Cronq. prairie groundcherry Physalis longifolia Nutt. longleaf groundcherry Physalis longifolia var. longifolia Nutt. longleaf groundcherry Physalis pumila Nutt. dwarf groundcherry Solanum dulcamara L. climbing nightshade Solanum physalifolium Rusby hoe nightshade Solanum ptychanthum Dunal nightshade Solanum rostratum Dunal buffalobur nightshade Solanum triflorum Nutt. cutleaf nightshade TAMARICACEAE Tamarix chinensis Lour. fivestamen tamarisk TAXACEAE Taxus brevifolia Nutt. Pacific yew TYPHACEAE Typha angustifolia L. narrowleaf cattail Typha latifolia L. broadleaf cattail ULMACEAE Ulmus americana L. American elm Ulmus pumila L. Siberian elm UMBELLIFERAE Angelica arguta Nutt. Lyall's angelica Angelica dawsonii S. Wats. Dawson's angelica Angelica pinnata S. Wats. smallleaf angelica Angelica roseana Henderson rose angelica Anthriscus cerefolium (L.) Hoffmann garden chervil Berula erecta (Huds.) Coville cutleaf waterparsnip Bupleurum americanum Coult. & Rose American thorow wax Cicuta bulbifera L. bulblet bearing water hemlock Cicuta douglasii (DC.) Coult. & Rose western water hemlock Cicuta maculata L. spotted water hemlock Cicuta maculata var. bolanderi (S. Wats.) Mulligan Conioselinum scopulorum (Gray) Coult. & Rose Rocky Mountain hemlockparsley Conium maculatum L. poison hemlock Cymopterus acaulis (Pursh) Raf. plains springparsley Cymopterus acaulis var. acaulis (Pursh) Raf. plains springparsley Cymopterus glaucus Nutt. waxy springparsley Cymopterus nivalis S. Wats. snowline springparsley Cymopterus terebinthinus var. albiflorus (Torr. & Gray) M.E. Jones = Pteryxia terebinthina var. albiflora Daucus carota L. Queen Anne's lace Heracleum lanatum Michx. = Heracleum maximum Heracleum maximum Bartr. common cowparsnip 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 porteri Coult. & Rose Porter's licoriceroot Ligusticum porteri var. porteri Coult. & Rose Porter'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 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. multifidum (Nutt.) Mathias & Constance carrotleaf 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. 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 macrocarpum (Nutt. ex Torr. & Gray) Coult. & Rose bigseed biscuitroot Lomatium orientale Coult. & Rose Northern Idaho biscuitroot Lomatium sandbergii (Coult. & Rose) Coult. & Rose Sandberg's 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. triternatum (Pursh) Coult. & Rose nineleaf biscuitroot Musineon divaricatum (Pursh) Raf. leafy wildparsley Musineon divaricatum var. divaricatum (Pursh) Raf. leafy wildparsley Musineon divaricatum var. hookeri (Torr. & Gray) Mathias Hooker's wildparsley Musineon vaginatum Rydb. sheathed wildparsley Orogenia linearifolia S. Wats. Great Basin Indian potato Osmorhiza berteroi DC. sweetcicely Osmorhiza chilensis Hook. & Arn. = Osmorhiza berteroi Osmorhiza depauperata Phil. bluntseed sweetroot Osmorhiza longistylis (Torr.) DC. longstyle sweetroot Osmorhiza occidentalis (Nutt. ex Torr. & Gray) Torr. western sweetroot Osmorhiza purpurea (Coult. & Rose) Suksdorf purple sweetroot Pastinaca sativa L. wild parsnip Perideridia gairdneri (Hook. & Arn.) Mathias yampa Perideridia gairdneri ssp. borealis Chuang & Constance common yampah Pteryxia hendersonii (Coult. & Rose) Mathias & Constance Henderson's 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 Shoshonea pulvinata Evert & Constance Shoshone carrot Sium suave Walt. hemlock waterparsnip Zizia aptera (Gray) Fern. meadow zizia Zizia aurea (L.) W.D.J. Koch golden zizia URTICACEAE 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 VALERIANACEAE Plectritis macrocera Torr. & Gray longhorn plectritis Plectritis macrocera ssp. grayi (Suksdorf) Morey Gray's 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 scouleri Rydb. Scouler's valerian Valeriana sitchensis Bong. Sitka valerian Valerianella locusta (L.) Lat. Lewiston cornsalad VERBENACEAE Verbena bracteata Lag. & Rodr. bigbract verbena Verbena hastata L. swamp verbena Verbena hastata var. scabra Moldenke swamp verbena Verbena stricta Vent. hoary verbena 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 canadensis L. Canadian white violet Viola canadensis var. corymbosa Nutt. ex Torr. & Gray 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 nuttallii Pursh Nuttall's violet Viola orbiculata Geyer ex Holz. darkwoods violet Viola palustris L. marsh violet Viola palustris var. palustris L. marsh violet Viola pedatifida G. Don prairie 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 sororia Willd. common blue violet Viola vallicola A. Nels. 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 VITACEAE Parthenocissus vitacea (Knerr) A.S. Hitchc. woodbine Vitis riparia Michx. riverbank grape ZANNICHELLIACEAE Zannichellia palustris L. horned pondweed ZYGOPHYLLACEAE Tribulus terrestris L. puncturevine Zygophyllum fabago L. Syrian beancaper