Checklist of the vascular plants of WYOMING (excluding grasses and their allies) ACERACEAE Acer glabrum Torr. Rocky Mountain maple Acer glabrum var. glabrum Torr. Rocky Mountain maple Acer grandidentatum Nutt. bigtooth maple Acer grandidentatum var. grandidentatum Nutt. bigtooth maple Acer negundo L. boxelder Acer negundo var. interius (Britt.) Sarg. boxelder maple Acer negundo var. violaceum (Kirchn.) Jaeger boxelder 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 cuneata Sheldon arumleaf arrowhead 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 californicus (Moq.) S. Wats. California amaranth Amaranthus powellii S. Wats. Powell's amaranth Amaranthus retroflexus L. redroot amaranth Froelichia gracilis (Hook.) Moq. slender snakecotton ANACARDIACEAE Rhus glabra L. smooth sumac Rhus radicans var. rydbergii (Small ex Rydb.) Rehd. = Toxicodendron rydbergii Rhus toxicodendron var. vulgaris Michx. = Toxicodendron rydbergii Rhus trilobata Nutt. skunkbush sumac Rhus trilobata var. trilobata Nutt. skunkbush sumac Toxicodendron rydbergii (Small ex Rydb.) Greene western poison ivy APOCYNACEAE Apocynum X floribundum Greene (pro sp.) intermediate dogbane Apocynum androsaemifolium L. spreading dogbane Apocynum cannabinum L. Indianhemp Apocynum medium Greene = Apocynum X floribundum Apocynum sibiricum Jacq. = Apocynum cannabinum Apocynum suksdorfii Greene = Apocynum cannabinum Apocynum suksdorfii var. angustifolium (Woot.) Woods. = Apocynum cannabinum ARACEAE Lysichiton americanus Hulten & St. John American skunkcabbage ARALIACEAE Aralia nudicaulis L. wild sarsaparilla ASCLEPIADACEAE Asclepias arenaria Torr. sand milkweed Asclepias cryptoceras S. Wats. pallid milkweed Asclepias cryptoceras ssp. cryptoceras S. Wats. pallid milkweed Asclepias hallii Gray Hall's milkweed Asclepias incarnata L. swamp milkweed Asclepias incarnata ssp. incarnata L. swamp milkweed Asclepias ovalifolia Dcne. ovalleaf milkweed Asclepias pumila (Gray) Vail plains milkweed Asclepias speciosa Torr. showy milkweed Asclepias stenophylla Gray slimleaf milkweed Asclepias subverticillata (Gray) Vail whorled milkweed Asclepias uncialis Greene wheel milkweed Asclepias verticillata L. whorled milkweed Asclepias viridiflora Raf. green milkweed ASPLENIACEAE Asplenium septentrionale (L.) Hoffmann forked spleenwort Asplenium trichomanes L. maidenhair spleenwort Asplenium trichomanes-ramosum L. brightgreen spleenwort BERBERIDACEAE Berberis aquifolium var. repens (Lindl.) Scoggan = Mahonia repens Berberis repens Lindl. = Mahonia repens Berberis thunbergii DC. Japanese 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. crispa (Ait.) Turrill American green alder Alnus viridis ssp. sinuata (Regel) A.& D. Love Sitka alder Betula fontinalis Sarg. = Betula occidentalis Betula glandulosa Michx. = Betula nana Betula nana L. bog birch Betula occidentalis Hook. water birch Betula papyrifera Marsh. paper birch Corylus cornuta Marsh. beaked hazelnut Corylus cornuta var. cornuta Marsh. beaked hazelnut Ostrya virginiana (P. Mill.) K. Koch eastern hophornbeam BORAGINACEAE Amsinckia lycopsoides Lehm. tarweed fiddleneck Amsinckia menziesii (Lehm.) A. Nels. & J.F. Macbr. Menzies' fiddleneck Anchusa arvensis (L.) Bieb. small bugloss Asperugo procumbens L. madwort Cryptantha affinis (Gray) Greene quill catseye Cryptantha ambigua (Gray) Greene basin catseye Cryptantha caespitosa (A. Nels.) Payson tufted 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 circumscissa (Hook. & Arn.) I.M. Johnston cushion catseye Cryptantha circumscissa var. circumscissa (Hook. & Arn.) I.M. Johnston cushion catseye Cryptantha fendleri (Gray) Greene sanddune catseye Cryptantha flava (A. Nels.) Payson Brenda's yellow catseye Cryptantha flavoculata (A. Nels.) Payson roughseed catseye Cryptantha kelseyana Greene Kelsey's catseye Cryptantha minima Rydb. little catseye Cryptantha rollinsii I.M. Johnston Rollins' catseye Cryptantha scoparia A. Nels. Pinyon Desert catseye Cryptantha sericea (Gray) Payson silky catseye Cryptantha spiculifera (Piper) Payson Snake River catseye Cryptantha stricta (Osterhout) Payson Yampa River catseye Cryptantha subcapitata Dorn & Lichvar Wallowa catseye Cryptantha thyrsiflora (Greene) Payson calcareous catseye Cryptantha torreyana (Gray) Greene Torrey's catseye Cryptantha torreyana var. torreyana (Gray) Greene Torrey's catseye Cryptantha virgata (Porter) Payson miner's candle 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. elongatum (Rydb.) Cronq. arctic alpine forget me not 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 Heliotropium curassavicum var. obovatum DC. seaside 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 incisum Lehm. narrowleaf gromwell Lithospermum multiflorum Torr. ex Gray manyflowered gromwell Lithospermum ruderale Dougl. ex Lehm. western gromwell Mertensia alpina (Torr.) G. Don alpine bluebells Mertensia arizonica Greene aspen bluebells Mertensia brevistyla S. Wats. shortstyle bluebells Mertensia ciliata (James ex Torr.) G. Don mountain bluebells Mertensia ciliata var. ciliata (James ex Torr.) G. Don tall fringe bluebells Mertensia fusiformis Greene spindleroot bluebells Mertensia humilis Rydb. Rocky Mountain bluebells Mertensia lanceolata (Pursh) DC. lanceleaf bluebells Mertensia lanceolata var. nivalis (S. Wats.) Higgins greenleaf bluebells Mertensia oblongifolia (Nutt.) G. Don oblongleaf bluebells Myosotis arvensis (L.) Hill field forget me not Myosotis asiatica (Vesterg.) Schischkin & Sergievskaja Asian 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 Pectocarya penicillata (Hook. & Arn.) A. DC. sleeping combseed 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 Tiquilia nuttallii (Hook.) A. Richards. Nuttall's coldenia CACTACEAE Coryphantha = Escobaria Echinocereus viridiflorus Engelm. nylon hedgehog cactus Echinocereus viridiflorus var. viridiflorus Engelm. nylon hedgehog cactus Escobaria missouriensis (Sweet) D.R. Hunt Missouri foxtail cactus Escobaria missouriensis var. missouriensis (Sweet) D.R. Hunt Missouri foxtail cactus Escobaria vivipara (Nutt.) Buxbaum spinystar Escobaria vivipara var. vivipara (Nutt.) Buxbaum spinystar Mammillaria = Escobaria Opuntia compressa var. grandiflora (Engelm.) Weniger = Opuntia macrorhiza var. macrorhiza Opuntia compressa var. macrorhiza (Engelm.) L. Benson = Opuntia macrorhiza var. macrorhiza Opuntia erinacea Engelm. & Bigelow ex Engelm. grizzlybear pricklypear Opuntia erinacea var. utahensis (Engelm.) L. Benson Utah grizzlybear pricklypear Opuntia fragilis (Nutt.) Haw. brittle pricklypear Opuntia fragilis var. fragilis (Nutt.) Haw. pygmy pricklypear Opuntia macrorhiza Engelm. twistspine pricklypear Opuntia macrorhiza var. macrorhiza Engelm. twistspine pricklypear Opuntia polyacantha Haw. plains pricklypear Opuntia polyacantha var. juniperina (Britt. & Rose) L. Benson Juniper prickly-pear Opuntia polyacantha var. polyacantha Haw. hairspine pricklypear Opuntia polyacantha var. rufispina (Engelm. & Bigelow ex Engelm.) L. Benson 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 CAMPANULACEAE Campanula aparinoides Pursh marsh bellflower Campanula parryi Gray Parry's bellflower Campanula parryi var. parryi Gray Parry's bellflower Campanula rapunculoides L. rampion bellflower Campanula rotundifolia L. bluebell bellflower Campanula uniflora L. arctic bellflower Downingia laeta (Greene) Greene Great Basin calicoflower Heterocodon rariflorum Nutt. rareflower heterocodon Lobelia siphilitica L. great blue lobelia Lobelia siphilitica var. ludoviciana A. DC. great blue lobelia Porterella carnosula (Hook. & Arn.) Torr. fleshy porterella Triodanis holzingeri McVaugh Holzinger's Venus' lookingglass Triodanis leptocarpa (Nutt.) Nieuwl. slimpod Venus' lookingglass Triodanis perfoliata (L.) Nieuwl. clasping Venus' lookingglass CANNABACEAE Cannabis sativa L. marijuana Humulus lupulus L. 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 multicaulis DC. slender spiderflower Cleome serrulata Pursh Rocky Mountain beeplant Polanisia dodecandra (L.) DC. roughseed clammyweed Polanisia dodecandra ssp. trachysperma (Torr. & Gray) Iltis sandyseed clammyweed CAPRIFOLIACEAE Linnaea borealis L. twinflower Linnaea borealis ssp. longiflora (Torr.) Hulten longtube twinflower Lonicera X bella Zabel whitebell honeysuckle Lonicera caerulea L. sweetberry honeysuckle Lonicera caerulea var. cauriana (Fern.) Boivin bluefly honeysuckle Lonicera dioica L. limber honeysuckle Lonicera dioica var. glaucescens (Rydb.) Butters limber honeysuckle Lonicera involucrata Banks ex Spreng. twinberry honeysuckle Lonicera involucrata var. involucrata Banks ex Spreng. twinberry honeysuckle Lonicera morrowii Gray Morrow's 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 melanocarpa Gray = Sambucus racemosa var. melanocarpa Sambucus mexicana K. Presl ex DC. = Sambucus nigra ssp. canadensis Sambucus microbotrys Rydb. = Sambucus racemosa var. racemosa 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. leucocarpa (Torr. & Gray) Cronq. European red elderberry Sambucus racemosa ssp. pubens var. pubens (Michx.) Koehne European red elderberry Sambucus racemosa var. melanocarpa (Gray) McMinn 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 lantana L. wayfaringtree Viburnum lentago L. nannyberry Viburnum opulus L. European cramp bark Viburnum opulus var. americanum Ait. American cramp bark CARYOPHYLLACEAE Agrostemma githago L. common corncockle Arenaria congesta Nutt. ballhead sandwort Arenaria congesta var. congesta Nutt. ballhead sandwort Arenaria congesta var. lithophila (Rydb.) Maguire loosehead sandwort Arenaria eastwoodiae Rydb. Eastwood's sandwort Arenaria eastwoodiae var. eastwoodiae Rydb. Eastwood's sandwort Arenaria fendleri Gray Fendler's sandwort Arenaria fendleri var. fendleri Gray Fendler's sandwort Arenaria hookeri Nutt. Hooker's sandwort Arenaria hookeri ssp. hookeri Nutt. Hooker's sandwort Arenaria hookeri ssp. pinetorum (A. Nels.) W.A. Weber Hooker's sandwort Arenaria kingii (S. Wats.) M.E. Jones King's sandwort Arenaria kingii ssp. compacta (Coville) Maguire King's compact sandwort Arenaria serpyllifolia L. thymeleaf sandwort Cerastium arvense L. field chickweed Cerastium beeringianum Cham. & Schlecht. Bering chickweed Cerastium beeringianum ssp. earlei (Rydb.) Hulten Earl's chickweed Cerastium brachypodum (Engelm. ex Gray) B.L. Robins. shortstalk chickweed Cerastium fontanum Baumg. common chickweed Cerastium fontanum ssp. vulgare (Hartman) Greuter & Burdet big chickweed Cerastium 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 Gypsophila scorzonerifolia Ser. garden babysbreath Loeflingia squarrosa Nutt. spreading pygmyleaf Loeflingia squarrosa ssp. artemisiarum Barneby & Twisselmann spreading pygmyleaf Loeflingia squarrosa ssp. squarrosa Nutt. spreading pygmyleaf Minuartia austromontana S.J. Wolf & Packer Columbian stitchwort Minuartia dawsonensis (Britt.) House rock stitchwort Minuartia nuttallii (Pax) Briq. Nuttall's sandwort Minuartia nuttallii ssp. nuttallii (Pax) Briq. Nuttall's sandwort Minuartia obtusiloba (Rydb.) House twinflower sandwort Minuartia rubella (Wahlenb.) Hiern beautiful sandwort Moehringia lateriflora (L.) Fenzl bluntleaf sandwort Paronychia depressa (Torr. & Gray) Nutt. ex A. Nels. spreading nailwort Paronychia jamesii Torr. & Gray James' nailwort Paronychia pulvinata Gray Rocky Mountain nailwort Paronychia sessiliflora Nutt. creeping nailwort Pseudostellaria jamesiana (Torr.) W.A. Weber & R.L. Hartman tuber starwort Sagina saginoides (L.) Karst. arctic pearlwort Saponaria officinalis L. bouncingbet Saponaria vaccaria L. = Vaccaria hispanica Silene acaulis (L.) Jacq. moss campion Silene acaulis var. subacaulescens (F.N. Williams) Fern. & St. John moss campion Silene antirrhina L. sleepy silene Silene dichotoma Ehrh. dichotoma silene Silene drummondii Hook. Drummond's campion Silene drummondii var. drummondii Hook. Drummond's campion Silene drummondii var. striata (Rydb.) Bocquet Drummond'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. 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 uralensis (Rupr.) Bocquet apetalous catchfly Silene uralensis ssp. montana (S. Wats.) McNeill apetalous catchfly Silene vulgaris (Moench) Garcke maidenstears Spergularia marina var. marina (L.) Griseb. sandspurry Spergularia rubra (L.) J.& K. Presl red sandspurry Spergularia salina J.& K. Presl salt sandspurry Spergularia salina var. salina J.& K. Presl salt sandspurry Stellaria borealis Bigelow boreal starwort Stellaria borealis ssp. borealis Bigelow boreal starwort Stellaria calycantha (Ledeb.) Bong. northern starwort Stellaria crassifolia Ehrh. fleshy starwort Stellaria crispa Cham. & Schlecht. curled starwort Stellaria jamesiana Torr. = Pseudostellaria jamesiana Stellaria longifolia Muhl. ex Willd. longleaf starwort Stellaria longipes Goldie longstalk starwort Stellaria longipes ssp. longipes Goldie longstalk starwort Stellaria longipes var. longipes Goldie longstalk starwort Stellaria media (L.) Vill. garden 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 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 canescens var. 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 patula L. spear saltbush Atriplex patula ssp. patula L. spear saltbush Atriplex powellii S. Wats. Powell's saltweed Atriplex rosea L. tumbling saltweed Atriplex saccaria S. Wats. sack saltbush Atriplex spinosa (Hook.) Collotzi = Grayia spinosa Atriplex subspicata (Nutt.) Rydb. saline saltbush Atriplex tridentata Kuntze basin saltbush Atriplex truncata (Torr. ex S. Wats.) Gray wedgescale saltbush Atriplex wolfii S. Wats. Wolf's saltweed Bassia hyssopifolia (Pallas) Kuntz fivehorn smotherweed Chenopodium album L. lambsquarters Chenopodium album var. album L. lambsquarters Chenopodium atrovirens Rydb. pinyon goosefoot Chenopodium berlandieri Moq. pitseed goosefoot Chenopodium berlandieri var. zschackii (J. Murr) J. Murr ex Aschers. Zschack's goosefoot Chenopodium botrys L. Jerusalem oak goosefoot Chenopodium capitatum (L.) Ambrosi blite goosefoot Chenopodium chenopodioides (L.) Aellen Chenopodium desiccatum A. Nels. aridland goosefoot Chenopodium fremontii S. Wats. Fremont's goosefoot Chenopodium glaucum L. oakleaf goosefoot Chenopodium hians Standl. hians goosefoot Chenopodium leptophyllum (Moq.) Nutt. ex S. Wats. narrowleaf goosefoot Chenopodium overi Aellen Over's goosefoot Chenopodium pallescens Standl. slimleaf goosefoot Chenopodium pratericola Rydb. desert goosefoot Chenopodium rubrum L. red goosefoot Chenopodium salinum Standl. Rocky Mountain goosefoot Chenopodium simplex (Torr.) Raf. mapleleaf goosefoot Chenopodium strictum Roth lateflowering goosefoot Chenopodium strictum ssp. glaucophyllum (Aellen) Aellen & Just. lateflowering 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 scoparia (L.) Schrad. common kochia Krascheninnikovia lanata (Pursh) Guldenstaedt winterfat Monolepis nuttalliana (J.A. Schultes) Greene Nuttall's povertyweed Monolepis pusilla Torr. ex S. Wats. small monolepis Salicornia rubra A. Nels. red swampfire Salsola collina Pallas slender Russian thistle Salsola kali L. prickly Russian thistle Salsola kali ssp. tragus (L.) Celak. prickly Russian thistle Sarcobatus vermiculatus (Hook.) Torr. greasewood Sarcobatus vermiculatus var. vermiculatus (Hook.) Torr. greasewood Suaeda calceoliformis (Hook.) Moq. Pursh seepweed Suaeda moquinii (Torr.) Greene Mojave seablite Suckleya suckleyana (Torr.) Rydb. poison suckleya Zuckia brandegei (Gray) Welsh & Stutz ex Welsh siltbush Zuckia brandegei var. plummeri (Stutz & Sanderson) Dorn Plummer's siltbush CISTACEAE Helianthemum bicknellii Fern. hoary frostweed Lechea intermedia Leggett ex Britt. largepod pinweed CLUSIACEAE Hypericum formosum H.B.K. Hypericum perforatum L. common St. Johnswort Hypericum scouleri Hook. Scouler'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. occidentalis DC. western yarrow Acroptilon repens (L.) DC. hardheads Adenocaulon bicolor Hook. American trailplant Agoseris aurantiaca (Hook.) Greene orange agoseris Agoseris glauca (Pursh) Raf. 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 Almutaster pauciflorus (Nutt.) A.& D. Love Ambrosia acanthicarpa Hook. flatspine burr ragweed Ambrosia artemisiifolia L. annual ragweed Ambrosia psilostachya DC. Cuman ragweed Ambrosia tomentosa Nutt. skeletonleaf burr ragweed Ambrosia trifida L. great ragweed Ambrosia trifida var. trifida L. great ragweed Anaphalis margaritacea (L.) Benth. & Hook. f. western pearlyeverlasting Antennaria anaphaloides Rydb. pearly pussytoes Antennaria arcuata Cronq. box pussytoes Antennaria aromatica Evert scented pussytoes Antennaria corymbosa E. Nels. flattop pussytoes Antennaria dimorpha (Nutt.) Torr. & Gray low pussytoes Antennaria flagellaris (Gray) Gray whip pussytoes Antennaria howellii Greene Howell's pussytoes Antennaria howellii ssp. howellii Greene Howell's pussytoes Antennaria howellii ssp. neodioica (Greene) Bayer field pussytoes Antennaria 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 parvifolia Nutt. smallleaf pussytoes Antennaria pulcherrima (Hook.) Greene showy pussytoes Antennaria racemosa Hook. raceme pussytoes Antennaria rosea Greene rosy pussytoes Antennaria rosea ssp. arida (E. Nels.) Bayer rosy pussytoes Antennaria rosea ssp. 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 arvensis L. corn chamomile Anthemis cotula L. stinking chamomile Anthemis tinctoria L. golden chamomile Antheropeas wallacei (Gray) Rydb. woolly easterbonnets Arctium lappa L. greater burrdock Arctium minus Bernh. lesser burrdock Arnica amplexicaulis Nutt. clasping arnica Arnica chamissonis Less. chamisso arnica Arnica chamissonis ssp. foliosa (Nutt.) Maguire chamisso arnica Arnica chamissonis ssp. foliosa var. andina (Nutt.) Ediger & Barkl. chamisso arnica Arnica 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 abrotanum L. southernwood Artemisia absinthium L. absinth sagewort Artemisia annua L. sweet sagewort Artemisia arbuscula Nutt. low sagebrush Artemisia arbuscula ssp. arbuscula Nutt. gray low sagebrush Artemisia arbuscula ssp. longiloba (Osterhout) L. Shultz alkali sagebrush Artemisia arbuscula ssp. thermopola Beetle hotsprings sagebrush Artemisia arctica Less. boreal sagebrush Artemisia arctica ssp. arctica Less. boreal sagebrush Artemisia biennis Willd. biennial wormwood Artemisia biennis var. biennis Willd. biennial wormwood Artemisia biennis var. diffusa Dorn biennial wormwood Artemisia campestris L. field sagewort Artemisia campestris ssp. borealis (Pallas) Hall & Clements northern sagewort Artemisia campestris ssp. borealis var. borealis (Pallas) M.E. Peck Pacific wormwood Artemisia campestris ssp. borealis var. scouleriana (Hook.) Cronq. Scouler's wormwood Artemisia campestris ssp. caudata (Michx.) Hall & Clements field wormwood Artemisia cana Pursh silver sagebrush Artemisia cana ssp. cana Pursh silver sagebrush Artemisia cana ssp. viscidula (Osterhout) Beetle Coaltown sagebrush Artemisia dracunculus L. wormwood Artemisia filifolia Torr. sand sagebrush Artemisia frigida Willd. fringed sagewort Artemisia longifolia Nutt. longleaf sagebrush Artemisia ludoviciana Nutt. Louisiana sagewort Artemisia ludoviciana ssp. candicans (Rydb.) Keck gray sagewort Artemisia ludoviciana ssp. incompta (Nutt.) Keck mountain sagewort Artemisia ludoviciana ssp. ludoviciana Nutt. foothill sagewort Artemisia michauxiana Bess. Michaux's sagebrush Artemisia norvegica Fries Norway sagewort Artemisia nova A. Nels. black sagebrush Artemisia pattersonii Gray Patterson's wormwood Artemisia pedatifida Nutt. birdfoot sagebrush Artemisia porteri Cronq. Porter's wormwood Artemisia scopulorum Gray alpine sagebrush Artemisia spinescens D.C. Eat. bud sagebrush Artemisia tridentata Nutt. big sagebrush Artemisia tridentata ssp. spiciformis (Osterhout) Kartesz & Gandhi big sagebrush Artemisia tridentata ssp. tridentata Nutt. basin big sagebrush Artemisia tridentata ssp. vaseyana (Rydb.) Beetle mountain big sagebrush Artemisia tridentata ssp. wyomingensis Beetle & Young Wyoming big sagebrush Artemisia tripartita Rydb. threetip sagebrush Artemisia tripartita ssp. rupicola Beetle Wyoming 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 campestris var. campestris Nutt. western meadow aster Aster ciliolatus Lindl. Lindley's aster Aster conspicuus Lindl. showy aster Aster ericoides L. heath aster Aster ericoides var. pansus (Blake) Boivin manyflowered aster Aster ericoides var. stricticaulis (Torr. & Gray) F.C. Gates white heath aster Aster falcatus Lindl. cluster aster Aster falcatus var. commutatus (Torr. & Gray) A.G. Jones cluster aster Aster falcatus var. crassulus (Rydb.) Cronq. rough white prairie aster Aster falcatus var. falcatus Lindl. cluster aster Aster foliaceus Lindl. ex DC. alpine leafybract aster Aster foliaceus var. apricus Gray leafybract aster Aster foliaceus var. canbyi Gray Canby's aster Aster foliaceus var. parryi (D.C. Eat.) Gray Parry's aster Aster glaucodes Blake gray aster Aster glaucodes var. glaucodes Blake gray 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 meritus A. Nels. Aster mollis Rydb. soft aster Aster novae-angliae L. New England aster Aster oblongifolius Nutt. aromatic aster Aster occidentalis (Nutt.) Torr. & Gray western aster Aster occidentalis var. occidentalis (Nutt.) Torr. & Gray western aster Aster perelegans A. Nels. & J.F. Macbr. elegant aster Aster porteri Gray Porter's aster Aster sibiricus L. Siberian aster Bahia dissecta (Gray) Britt. ragleaf bahia Balsamita major Desf. costmary Balsamorhiza X tomentosa Rydb. (pro sp.) tomentose balsamroot Balsamorhiza hookeri (Hook.) Nutt. Hooker's balsamroot Balsamorhiza hookeri var. hispidula (Sharp) Cronq. hairy balsamroot Balsamorhiza incana Nutt. hoary balsamroot Balsamorhiza macrophylla Nutt. cutleaf balsamroot Balsamorhiza sagittata (Pursh) Nutt. arrowleaf balsamroot Bidens cernua L. nodding beggartick Bidens frondosa L. devil's beggartick Bidens 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 microphylla (Nutt.) Gray littleleaf brickellbush Brickellia microphylla var. scabra Gray rough brickellbush Carduus acanthoides L. spiny plumeless thistle Carduus nutans L. nodding plumeless thistle Centaurea biebersteinii DC. spotted knapweed Centaurea cyanus L. garden cornflower Centaurea diffusa Lam. white knapweed Centaurea iberica Trev. ex Spreng. Iberian 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 Chaenactis leucopsis Greene alpine pincushion Chaenactis stevioides Hook. & Arn. Steve's dustymaiden Chaetopappa ericoides (Torr.) Nesom rose heath Chamaechaenactis scaposa (Eastw.) Rydb. fullstem Chrysanthemum balsamita (L.) Baill., non L. = Balsamita major Chrysanthemum leucanthemum L. = Leucanthemum vulgare Chrysanthemum parthenium (L.) Bernh. = Tanacetum parthenium Chrysothamnus graveolens (Nutt.) Greene = Ericameria nauseosa ssp. nauseosa var. glabrata Chrysothamnus greenei (Gray) Greene Greene's rabbitbrush 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 parryi ssp. parryi (Gray) Greene Parry's rabbitbrush Chrysothamnus vaseyi (Gray) Greene Vasey's 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 canescens Nutt. prairie thistle Cirsium canovirens (Rydb.) Petrak graygreen thistle Cirsium drummondii Torr. & Gray dwarf thistle Cirsium eatonii (Gray) B.L. Robins. Eaton's thistle Cirsium flodmanii (Rydb.) Arthur Flodman's thistle Cirsium foliosum (Hook.) DC. elk thistle Cirsium hookerianum Nutt. white thistle Cirsium ochrocentrum Gray yellowspine thistle Cirsium ownbeyi Welsh Ownbey's thistle Cirsium pulcherrimum (Rydb.) K. Schum. Wyoming thistle Cirsium remotifolium (Hook.) DC. fewleaf thistle Cirsium remotifolium ssp. oregonense Petrak Cirsium scariosum Nutt. meadow thistle Cirsium subniveum Rydb. Jackson Hole thistle Cirsium tioganum (Congd.) Petrak stemless thistle Cirsium tioganum var. coloradense (Rydb.) Dorn Colorado thistle Cirsium tioganum var. tioganum (Congd.) Petrak Tioga thistle Cirsium undulatum (Nutt.) Spreng. wavyleaf thistle Cirsium vulgare (Savi) Ten. bull thistle Conyza canadensis (L.) Cronq. Canadian horseweed Conyza canadensis var. canadensis (L.) Cronq. Canadian horseweed Coreopsis tinctoria Nutt. golden tickseed Coreopsis tinctoria var. tinctoria Nutt. golden tickseed Crepis acuminata Nutt. longleaf hawksbeard Crepis atribarba Heller 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 modocensis ssp. subacaulis (Kellogg) Babcock & Stebbins Siskiyou hawksbeard Crepis nana Richards. dwarf alpine hawksbeard Crepis nana ssp. nana Richards. dwarf alpine hawksbeard Crepis occidentalis Nutt. largeflower hawksbeard Crepis occidentalis ssp. costata (Gray) Babcock & Stebbins largeflower hawksbeard Crepis occidentalis ssp. occidentalis Nutt. largeflower hawksbeard Crepis runcinata (James) Torr. & Gray fiddleleaf hawksbeard Crepis runcinata ssp. glauca (Nutt.) Babcock & Stebbins fiddleleaf hawksbeard Crepis runcinata ssp. runcinata (James) Torr. & Gray fiddleleaf hawksbeard Crepis tectorum L. narrowleaf hawksbeard Dyssodia papposa (Vent.) A.S. Hitchc. fetid marigold Echinacea angustifolia DC. blacksamson echinacea Echinacea angustifolia var. angustifolia DC. blacksamson echinacea Echinacea pallida var. angustifolia (DC.) Cronq. = Echinacea angustifolia var. angustifolia Ericameria discoidea (Nutt.) Nesom whitestem heathgoldenrod Ericameria discoidea var. discoidea (Nutt.) Nesom whitestem heathgoldenrod Ericameria discoidea var. linearis (Rydb.) Nesom whitestem heathgoldenrod Ericameria nauseosa (Pallas ex Pursh) Nesom & Baird Ericameria nauseosa ssp. consimilis var. oreophila Ericameria nauseosa ssp. nauseosa var. glabrata Ericameria nauseosa ssp. nauseosa var. nauseosa Ericameria nauseosa var. arta (A. Nels.) Nesom & Baird = Ericameria nauseosa ssp. consimilis var. oreophila Ericameria parryi (Gray) Nesom Ericameria parryi var. howardii (Parry ex Gray) Nesom & Baird Ericameria parryi var. parryi (Gray) Nesom Ericameria suffruticosa (Nutt.) Nesom singlehead heathgoldenrod Erigeron acris L. Erigeron acris ssp. acris var. debilis Erigeron acris ssp. kamtschaticus (DC.) Hara Erigeron allocotus Blake Big Horn fleabane Erigeron bellidiastrum Nutt. western daisy fleabane Erigeron bellidiastrum var. bellidiastrum Nutt. western daisy fleabane Erigeron caespitosus Nutt. tufted fleabane Erigeron canadensis L. = Conyza canadensis var. canadensis Erigeron canus Gray hoary fleabane Erigeron compositus Pursh cutleaf daisy Erigeron concinnus (Hook. & Arn.) Torr. & Gray Navajo fleabane Erigeron concinnus var. concinnus (Hook. & Arn.) Torr. & Gray Navajo fleabane Erigeron consimilis Cronq. foothill fleabane 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 elatior (Gray) Greene tall fleabane Erigeron engelmannii A. Nels. Engelmann's fleabane Erigeron engelmannii var. engelmannii A. Nels. Engelmann's fleabane Erigeron eximius Greene sprucefir fleabane Erigeron flabellifolius Rydb. fanleaf fleabane Erigeron flagellaris Gray trailing fleabane Erigeron formosissimus Greene beautiful fleabane Erigeron formosissimus var. 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 humilis Graham arctic alpine fleabane Erigeron lanatus Hook. woolly fleabane Erigeron leiomerus Gray rockslide yellow fleabane Erigeron linearis (Hook.) Piper desert yellow fleabane Erigeron lonchophyllus Hook. Erigeron melanocephalus (A. Nels.) A. Nels. blackhead fleabane Erigeron nanus Nutt. dwarf fleabane Erigeron nematophyllus Rydb. needleleaf fleabane Erigeron ochroleucus Nutt. buff fleabane Erigeron ochroleucus var. ochroleucus Nutt. buff fleabane Erigeron ochroleucus var. scribneri (Canby ex Rydb.) Cronq. buff fleabane Erigeron peregrinus (Banks ex Pursh) Greene subalpine fleabane Erigeron peregrinus ssp. callianthemus (Greene) Cronq. subalpine fleabane Erigeron philadelphicus L. Philadelphia fleabane Erigeron pinnatisectus (Gray) A. Nels. featherleaf fleabane Erigeron pulcherrimus Heller basin fleabane Erigeron pumilus Nutt. 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 strigosus Muhl. ex Willd. prairie fleabane Erigeron strigosus var. septentrionalis (Fern. & Wieg.) Fern. prairie fleabane Erigeron strigosus var. strigosus Muhl. ex Willd. prairie fleabane Erigeron subtrinervis Rydb. ex Porter & Britt. threenerve fleabane Erigeron subtrinervis var. conspicuus (Rydb.) Cronq. threenerve fleabane Erigeron subtrinervis var. subtrinervis Rydb. ex Porter & Britt. threenerve fleabane Erigeron tener (Gray) Gray slender fleabane Erigeron tweedyi Canby Tweedy's fleabane Erigeron uintahensis Cronq. Uinta fleabane Erigeron ursinus D.C. Eat. Bear River fleabane Erigeron vetensis Rydb. early bluetop fleabane Eriophyllum lanatum (Pursh) Forbes woolly eriophyllum Eriophyllum lanatum var. integrifolium (Hook.) Smiley common woollysunflower Eucephalus engelmannii (D.C. Eat.) Greene Eupatorium maculatum L. spotted joepyeweed Eupatorium maculatum var. bruneri (Gray) Breitung spotted joepyeweed Euthamia graminifolia (L.) Nutt. flattop goldentop Euthamia graminifolia var. graminifolia (L.) Nutt. flattop goldentop Euthamia occidentalis Nutt. western goldentop Filago arvensis L. field cottonrose Gaillardia aristata Pursh common gaillardia Galinsoga Ruiz & Pavon galinsoga Galinsoga quadriradiata Ruiz & Pavon shaggysoldier Gnaphalium palustre Nutt. western marsh cudweed Gnaphalium uliginosum L. marsh cudweed Grindelia squarrosa (Pursh) Dunal curlycup gumweed Grindelia squarrosa var. quasiperennis Lunell curlycup gumweed Grindelia squarrosa var. squarrosa (Pursh) Dunal curlycup gumweed Grindelia subalpina Greene subalpine gumweed Gutierrezia sarothrae (Pursh) Britt. & Rusby broom snakeweed Haplopappus acaulis (Nutt.) Gray = Stenotus acaulis var. acaulis Haplopappus alpigenus Torr. & Gray = Oreostemma alpigenum var. alpigenum Haplopappus annuus (Rydb.) Cory = Machaeranthera annua Haplopappus armerioides (Nutt.) Gray = Stenotus armerioides var. armerioides Haplopappus carthamoides var. subsquarrosus (Greene) Dorn = Pyrrocoma carthamoides var. subsquarrosa Haplopappus coloradoensis (Gray) R.L. Hartman ex Dorn = Machaeranthera coloradoensis var. coloradoensis Haplopappus contractus Hall = Pyrrocoma uniflora var. uniflora Haplopappus coulteri Harvey & Gray ex Gray = Machaeranthera pinnatifida ssp. pinnatifida var. pinnatifida Haplopappus croceus Gray = Pyrrocoma crocea var. crocea Haplopappus fremontii ssp. wardii (Gray) Hall = Oonopsis wardii Haplopappus integrifolius Porter ex Gray = Pyrrocoma integrifolia Haplopappus integrifolius ssp. typicus Hall = Pyrrocoma integrifolia Haplopappus lanceolatus (Hook.) Torr. & Gray = Pyrrocoma lanceolata var. lanceolata Haplopappus lyallii Gray = Tonestus lyallii Haplopappus macronema (Nutt.) Gray = Ericameria discoidea var. discoidea Haplopappus multicaulis (Nutt.) Gray = Oonopsis multicaulis Haplopappus nuttallii Torr. & Gray = Machaeranthera grindelioides var. grindelioides Haplopappus parryi Gray = Solidago parryi Haplopappus phyllocephalus ssp. annuus (Rydb.) Hall = Machaeranthera annua 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. uniflora (Nutt.) Torr. & Gray oneflower helianthella 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 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 Helianthus pumilus Nutt. little sunflower Helianthus tuberosus L. Jerusalem artichoke Heliomeris multiflora Nutt. showy goldeneye Heliomeris multiflora var. multiflora Nutt. showy goldeneye Heterotheca fulcrata (Greene) Shinners rockyscree falsegoldenaster Heterotheca villosa (Pursh) Shinners hairy goldenaster Heterotheca villosa var. depressa (Rydb.) Harms hairy goldenaster Heterotheca villosa var. hispida (Hook.) Harms bristly hairy goldaster Heterotheca villosa var. horrida (Hook.) Semple 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 fendleri Schultz-Bip. yellow hawkweed Hieracium fendleri var. fendleri Schultz-Bip. Fendler's 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 Hieracium umbellatum L. narrowleaf hawkweed Hulsea algida Gray pain hulsea Hymenopappus filifolius Hook. fineleaf hymenopappus Hymenopappus filifolius var. luteus (Nutt.) B.L. Turner fineleaf hymenopappus Hymenopappus filifolius var. nudipes (Maguire) B.L. Turner alpine hymenopappus Hymenopappus filifolius var. polycephalus (Osterhout) B.L. Turner manyhead hymenopappus Hymenopappus tenuifolius Pursh Chalk Hill hymenopappus Hymenoxys hoopesii (Gray) Bierner Hymenoxys richardsonii (Hook.) Cockerell pingue hymenoxys Hymenoxys richardsonii var. floribunda (Gray) Parker Colorado rubberweed Hymenoxys richardsonii var. richardsonii (Hook.) Cockerell pingue hymenoxys Ionactis alpina (Nutt.) Greene alpine ionactis Iva axillaris Pursh povertyweed Iva xanthifolia Nutt. giant sumpweed Lactuca biennis (Moench) Fern. tall blue lettuce Lactuca canadensis L. Canada lettuce Lactuca canadensis var. canadensis L. Canada lettuce Lactuca 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 Leucanthemum leucanthemum (L.) Rydb. = Leucanthemum vulgare Leucanthemum vulgare Lam. oxeyedaisy Liatris lancifolia (Greene) Kittell lanceleaf gayfeather Liatris ligulistylis (A. Nels.) K. Schum. Rocky Mountain gayfeather Liatris punctata Hook. dotted gayfeather Liatris punctata var. punctata Hook. dotted gayfeather Lygodesmia grandiflora (Nutt.) Torr. & Gray largeflower skeletonplant Lygodesmia juncea (Pursh) D. Don ex Hook. rush skeletonplant Machaeranthera annua (Rydb.) Shinners viscid tansyaster Machaeranthera bigelovii (Gray) Greene Bigelow's tansyaster Machaeranthera bigelovii var. bigelovii (Gray) Greene Bigelow's tansyaster Machaeranthera canescens (Pursh) Gray hoary aster Machaeranthera canescens ssp. canescens var. canescens (Pursh) Gray cutleaf goldenweed Machaeranthera canescens ssp. glabra (Gray) B.L. Turner hoary tansyaster Machaeranthera coloradoensis (Gray) Osterhout Colorado aster Machaeranthera coloradoensis var. coloradoensis (Gray) Osterhout Colorado aster Machaeranthera grindelioides (Nutt.) Shinners rayless aster Machaeranthera grindelioides var. grindelioides (Nutt.) Shinners rayless aster Machaeranthera pinnatifida (Hook.) Shinners lacy tansyaster Machaeranthera pinnatifida ssp. pinnatifida var. glaberrima (Rydb.) B.L. Turner & Hartman lacy tansyaster Machaeranthera pinnatifida ssp. pinnatifida var. pinnatifida (Hook.) Shinners lacy tansyaster Machaeranthera tanacetifolia (Kunth) Nees tanseyleaf aster Madia glomerata Hook. mountain tarweed Malacothrix sonchoides (Nutt.) Torr. & Gray sowthistle desertdandelion Malacothrix torreyi Gray Torrey's desertdandelion Matricaria discoidea DC. disc mayweed Matricaria maritima ssp. maritima L. false mayweed Matricaria matricarioides (Less.) Porter = Matricaria discoidea Matricaria suaveolens (Pursh) Buch., non L. = Matricaria discoidea Microseris nutans (Hook.) Schultz-Bip. nodding microceris 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 Oonopsis wardii (Gray) Greene Ward's false goldenweed Oreostemma alpigenum (Torr. & Gray) Nesom Oreostemma alpigenum var. alpigenum (Torr. & Gray) Nesom Oreostemma alpigenum var. haydenii (Porter) Nesom Palafoxia rosea (Bush) Cory rosy palafox Palafoxia rosea var. macrolepis (Rydb.) B.L. Turner & Morris rosy palafox Parthenium alpinum (Nutt.) Torr. & Gray alpine feverfew Pectis angustifolia Torr. narrowleaf pectis Pectis angustifolia var. angustifolia Torr. lemonscent Petasites sagittatus (Banks ex Pursh) Gray arrowleaf sweet coltsfoot Petradoria pumila (Nutt.) Greene grassy rockgoldenrod Petradoria pumila ssp. pumila (Nutt.) Greene grassy rockgoldenrod 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 Pseudognaphalium canescens (DC.) W.A. Weber Pseudognaphalium canescens ssp. microcephalum (Nutt.) Kartesz, comb. nov. ined. Pseudognaphalium canescens ssp. thermale (E. Nels.) 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. subsquarrosa (Greene) G. Brown & Keil largeflower goldenweed Pyrrocoma clementis Rydb. tranquil goldenweed Pyrrocoma crocea (Gray) Greene curlyhead goldenweed Pyrrocoma crocea var. crocea (Gray) Greene pebble goldenweed Pyrrocoma integrifolia (Porter ex Gray) Greene manysted goldenweed Pyrrocoma lanceolata (Hook.) Greene lanceleaf goldenweed Pyrrocoma lanceolata var. 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 Ratibida tagetes (James) Barnh. green prairie coneflower Rudbeckia hirta L. blackeyed Susan Rudbeckia hirta var. pulcherrima Farw. blackeyed Susan Rudbeckia laciniata L. cutleaf coneflower Rudbeckia laciniata var. ampla (A. Nels.) Cronq. cutleaf coneflower Rudbeckia laciniata var. laciniata L. cutleaf coneflower Rudbeckia occidentalis Nutt. western coneflower Rudbeckia occidentalis var. occidentalis Nutt. western coneflower Saussurea 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 atratus Greene tall blacktip ragwort Senecio bigelovii Gray nodding ragwort Senecio bigelovii var. hallii Gray Hall's ragwort Senecio canus Hook. woolly groundsel Senecio crassulus Gray thickleaf groundsel Senecio crocatus Rydb. saffron ragwort Senecio cymbalarioides Buek cleftleaf groundsel Senecio debilis Nutt. weak groundsel Senecio dimorphophyllus Greene splitleaf groundsel Senecio dimorphophyllus var. 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 eremophilus var. kingii (Rydb.) Greenm. King's groundsel Senecio fendleri Gray Fendler's ragwort Senecio fremontii Torr. & Gray Fremont's groundsel Senecio fremontii var. blitoides (Greene) Cronq. dwarf mountain ragwort Senecio fremontii var. fremontii Torr. & Gray Fremont's groundsel Senecio fuscatus Hayek fuscatus groundsel 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 lugens Richards. small blacktip groundsel Senecio megacephalus Nutt. rocky groundsel Senecio multilobatus Torr. & Gray ex Gray lobeleaf groundsel Senecio pauciflorus Pursh alpine groundsel Senecio pauperculus Michx. balsam groundsel Senecio plattensis Nutt. prairie groundsel Senecio porteri Greene Porter's groundsel Senecio pseudaureus Rydb. falsegold groundsel Senecio pseudaureus var. flavulus (Greene) Greenm. falsegold groundsel Senecio pseudaureus var. pseudaureus Rydb. falsegold groundsel Senecio rapifolius Nutt. openwoods groundsel Senecio riddellii Torr. & Gray Riddell's ragwort Senecio serra Hook. butterweed groundsel Senecio serra var. admirabilis (Greene) A. Nels. tall ragwort Senecio serra var. serra Hook. tall ragwort Senecio spartioides Torr. & Gray broom groundsel Senecio spartioides var. multicapitatus (Greenm. ex Rydb.) Welsh Senecio spartioides var. spartioides Torr. & Gray Senecio sphaerocephalus Greene ballhead groundsel Senecio streptanthifolius Greene cleftleaf groundsel Senecio streptanthifolius var. borealis (Torr. & Gray) J.F. Bain Rocky Mountain groundsel Senecio streptanthifolius var. oodes (Rydb.) J.F. Bain Rocky Mountain groundsel Senecio streptanthifolius var. rubricaulis (Greene) J.F. Bain Rocky Mountain groundsel Senecio streptanthifolius var. streptanthifolius Greene cleftleaf groundsel Senecio triangularis Hook. arrowleaf groundsel Senecio tridenticulatus Rydb. threetooth ragwort Senecio vulgaris L. common groundsel Senecio werneriifolius (Gray) Gray hoary groundsel Shinnersoseris rostrata (Gray) S. Tomb beaked skeletonweed Silphium integrifolium Michx. wholeleaf rosinweed Silphium integrifolium var. laeve Torr. & Gray wholeleaf rosinweed 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. fasciculata Holz. 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 parryi (Gray) Greene Parry's goldenrod Solidago simplex Kunth Mt. Albert goldenrod Solidago speciosa Nutt. showy goldenrod Solidago speciosa var. pallida Porter showy goldenrod Solidago velutina DC. threenerve goldenrod Sonchus 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 Sphaeromeria simplex (A. Nels.) Heller Laramie chickensage 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 Stephanomeria exigua Nutt. small wirelettuce Stephanomeria exigua ssp. exigua Nutt. small wirelettuce Stephanomeria pauciflora (Torr.) A. Nels. brownplume wirelettuce Stephanomeria runcinata Nutt. desert wirelettuce Stephanomeria tenuifolia (Raf.) Hall narrowleaf wirelettuce Tanacetum balsamita L. = Balsamita major Tanacetum parthenium (L.) Schultz-Bip. feverfew Tanacetum vulgare L. common tansy Taraxacum eriophorum Rydb. woolbearing dandelion Taraxacum laevigatum (Willd.) DC. rock dandelion Taraxacum lyratum (Ledeb.) DC. harp dandelion Taraxacum officinale G.H. Weber ex Wiggers common dandelion Taraxacum officinale ssp. ceratophorum (Ledeb.) Schinz ex Thellung fleshy dandelion Tetradymia canescens DC. spineless horsebrush Tetradymia nuttallii Torr. & Gray Nuttall's horsebrush Tetradymia spinosa Hook. & Arn. shortspine horsebrush Tetraneuris acaulis (Pursh) Greene stemless hymenoxys Tetraneuris acaulis var. acaulis (Pursh) Greene stemless hymenoxys Tetraneuris acaulis var. arizonica (Greene) Parker Arizona hymenoxys Tetraneuris acaulis var. caespitosa A. Nels. caespitose hymenoxys Tetraneuris grandiflora (Torr. & Gray ex Gray) Parker graylocks hymenoxys Tetraneuris torreyana (Nutt.) Greene Torrey's hymenoxys Thelesperma filifolium (Hook.) Gray stiff greenthread Thelesperma filifolium var. intermedium (Rydb.) Shinners stiff greenthread Thelesperma gracile (Torr.) Gray = Thelesperma megapotamicum Thelesperma megapotamicum (Spreng.) Kuntze Hopi tea greenthread Thelesperma pubescens Dorn hairy greenthread Thelesperma subnudum Gray sand fringedpod Thelesperma subnudum var. marginatum (Rydb.) T.E. Melchert ex Cronq. greenthread border 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. anomala (Heiser) Dorn cushion townsend daisy Townsendia condensata var. condensata Parry ex Gray cushion townsend daisy Townsendia exscapa (Richards.) Porter stemless townsendia Townsendia florifer (Hook.) Gray showy townsendia Townsendia grandiflora Nutt. largeflower townsend daisy Townsendia hookeri Beaman Hooker's townsendia Townsendia incana Nutt. hoary townsendia Townsendia leptotes (Gray) Osterhout common townsendia Townsendia nuttallii Dorn Nuttall's townsend daisy Townsendia parryi D.C. Eat. Parry's townsend daisy Townsendia spathulata Nutt. sword townsendia Townsendia strigosa Nutt. hairy townsendia Tragopogon dubius Scop. yellow salsify Tragopogon miscellus Ownbey Moscow salsify Tragopogon porrifolius L. salsify Tragopogon pratensis L. meadow salsify 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 Verbesina encelioides ssp. exauriculata (Robins. & Greenm.) J.R. Coleman golden crownbeard Wyethia amplexicaulis (Nutt.) Nutt. mulesears wyethia Wyethia helianthoides Nutt. sunflower wyethia Wyethia scabra Hook. badlands wyethia Wyethia scabra var. scabra Hook. badlands mulesears 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 Yermo xanthocephalus Dorn yermo CONVOLVULACEAE Calystegia sepium (L.) R. Br. hedge false bindweed Calystegia sepium ssp. angulata Brummitt hedge false bindweed Convolvulus arvensis L. field bindweed Cuscuta approximata Bab. alfalfa dodder Cuscuta approximata var. urceolata (Kunze) Yuncker alfalfa dodder Cuscuta californica Hook. & Arn. chaparral dodder Cuscuta californica var. breviflora Engelm. California dodder Cuscuta epithymum L. clover dodder Cuscuta indecora Choisy bigseed alfalfa dodder Cuscuta indecora var. neuropetala (Engelm.) A.S. Hitchc. bigseed dodder Cuscuta megalocarpa Rydb. bigfruit dodder Cuscuta plattensis A. Nels. prairie dodder Evolvulus nuttallianus J.A. Schultes shaggy dwarf morningglory Ipomoea leptophylla Torr. bush morningglory CORNACEAE Cornus canadensis L. bunchberry dogwood Cornus sericea L. redosier dogwood Cornus sericea ssp. sericea L. redosier dogwood CRASSULACEAE Crassula aquatica (L.) Schoenl. water pygmyweed Rhodiola integrifolia Raf. = Sedum integrifolium ssp. integrifolium 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 rhodanthum Gray redpod stonecrop Sedum stenopetalum Pursh wormleaf stonecrop Sedum stenopetalum ssp. stenopetalum Pursh wormleaf stonecrop Tillaea = Crassula CROSSOSOMATACEAE Glossopetalon spinescens Gray spiny greasebush Glossopetalon spinescens var. meionandrum (Koehne) Trel. 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 Arabis cobrensis M.E. Jones sagebrush rockcress Arabis crandallii B.L. Robins. Crandall's rockcress Arabis demissa Greene nodding rockcress Arabis demissa var. languida Rollins nodding rockcress Arabis drummondii Gray Drummond's rockcress Arabis fendleri (S. Wats.) Greene Fendler's rockcress Arabis fendleri var. spatifolia (Rydb.) Rollins spoonleaf rockcress Arabis fructicosa A. Nels. fruit rockcress Arabis glabra (L.) Bernh. tower rockcress Arabis glabra var. glabra (L.) Bernh. tower rockcress Arabis hirsuta (L.) Scop. hairy rockcress Arabis hirsuta var. glabrata Torr. & Gray mountain rockcress Arabis hirsuta var. pycnocarpa (M. Hopkins) Rollins creamflower rockcress Arabis holboellii Hornem. Holboell's rockcress Arabis holboellii var. 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 pendulina Greene rabbitear rockcress Arabis pendulina var. russeola (Rollins) Rollins russeola rockcress Arabis perennans S. Wats. perennial rockcress Arabis pulchra M.E. Jones ex S. Wats. beauty rockcress Arabis pulchra var. pallens M.E. Jones desert rockcress Arabis pusilla Rollins Fremont County rockcress Arabis selbyi Rydb. Selby's rockcress Arabis sparsiflora Nutt. sicklepod rockcress Arabis sparsiflora var. sparsiflora Nutt. sicklepod 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 Arabis williamsii var. williamsii Rollins Wind River rockcress Armoracia rusticana P.G. Gaertn., B. Mey. & Scherb. horseradish 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 rapa L. rape mustard Camelina microcarpa DC. littlepod falseflax Camelina 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 cordifolia Gray heartleaf bittercress Cardamine cordifolia var. cordifolia Gray heartleaf bittercress Cardamine oligosperma Nutt. Idaho bittercress Cardamine oligosperma var. oligosperma Nutt. little western bittercress Cardamine pensylvanica Muhl. ex Willd. Pennsylvania bittercress Cardaria chalapensis (L.) Hand.-Maz. Cardaria draba (L.) Desv. pepperweed whitetop Cardaria pubescens (C.A. Mey.) Jarmolenko hairy whitetop Caulanthus crassicaulis (Torr.) S. Wats. thickstem wild cabbage Chorispora tenella (Pallas) DC. crossflower Conringia orientalis (L.) Dumort. hare's ear mustard Descurainia californica (Gray) O.E. Schulz Sierran tansymustard Descurainia incana (Bernh. ex Fisch. & C.A. Mey.) Dorn mountain tansymustard Descurainia incana ssp. incana (Bernh. ex Fisch. & C.A. Mey.) Dorn mountain tansymustard Descurainia incana ssp. 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. halictorum (Cockerell) Detling western tansymustard Descurainia pinnata ssp. intermedia (Rydb.) Detling western tansymustard Descurainia pinnata ssp. nelsonii (Rydb.) Detling Nelson's tansymustard Descurainia pinnata ssp. paysonii Detling Payson's tansymustard Descurainia torulosa Rollins Wind River tansymustard Draba albertina Greene slender whitlowgrass Draba aurea Vahl ex Hornem. golden whitlowgrass Draba borealis DC. boreal whitlowgrass Draba breweri S. Wats. cushion whitlowgrass Draba breweri var. cana (Rydb.) Rollins Draba crassa Rydb. thickleaf whitlowgrass Draba crassifolia Graham snowbed 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 nemorosa L. woodland whitlowgrass Draba oligosperma Hook. fewseed 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 porsildii var. brevicula (Rollins) Rollins Draba porsildii var. porsildii Mulligan Draba praealta Greene tall whitlowgrass Draba reptans (Lam.) Fern. Carolina whitlowgrass Draba spectabilis Greene showy whitlowgrass Draba spectabilis var. oxyloba (Greene) Gilg & Schulz ex O.E. Schulz showy whitlowgrass Draba streptocarpa Gray pretty whitlowgrass Draba ventosa Gray Wind River whitlowgrass Draba verna L. spring whitlowgrass Erucastrum gallicum (Willd.) O.E. Schulz common dogmustard Erysimum capitatum (Dougl. ex Hook.) Greene sanddune wallflower Erysimum capitatum var. capitatum (Dougl. ex Hook.) Greene sanddune wallflower Erysimum cheiranthoides L. wormseed wallflower Erysimum inconspicuum (S. Wats.) MacM. shy wallflower Erysimum repandum L. spreading wallflower Euclidium syriacum (L.) Ait. f. Syrian mustard Halimolobos virgata (Nutt.) O.E. Schulz rod halimolobos Hesperis matronalis L. dames rocket Hutchinsia procumbens (L.) Desv. prostrate hutchinsia Isatis tinctoria L. Dyer's woad Lepidium alyssoides Gray mesa pepperwort Lepidium alyssoides var. alyssoides Gray 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 densiflorum var. ramosum (A. Nels.) Thellung miner's pepperweed Lepidium integrifolium Nutt. thickleaf pepperweed Lepidium integrifolium var. integrifolium Nutt. thickleaf 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. medium (Greene) C.L. Hitchc. medium pepperweed Lepidium virginicum var. pubescens (Greene) Thellung hairy pepperweed Lesquerella alpina (Nutt.) S. Wats. alpine bladderpod Lesquerella alpina var. alpina (Nutt.) S. Wats. Lesquerella arenosa (Richards.) Rydb. Great Plains bladderpod Lesquerella arenosa var. arenosa (Richards.) Rydb. Great Plains bladderpod Lesquerella arenosa var. argillosa Rollins & Shaw Great Plains bladderpod Lesquerella carinata Rollins Idaho bladderpod Lesquerella condensata A. Nels. dense bladderpod Lesquerella fremontii Rollins & Shaw Fremont's bladderpod Lesquerella ludoviciana (Nutt.) S. Wats. foothill bladderpod Lesquerella macrocarpa A. Nels. largefruit bladderpod Lesquerella montana (Gray) S. Wats. mountain bladderpod Lesquerella multiceps Maguire manyhead bladderpod Lesquerella parvula Greene pygmy bladderpod Lesquerella paysonii Rollins Payson's bladderpod Lesquerella prostrata A. Nels. low bladderpod Lesquerella subumbellata Rollins parasol bladderpod Lobularia maritima (L.) Desv. seaside lobularia Malcolmia africana (L.) Ait. f. African mustard Nasturtium armoracia (L.) Fries = Armoracia rusticana Nasturtium officinale Ait. f. = Rorippa nasturtium-aquaticum Parrya nudicaulis (L.) Boiss. nakedstem wallflower Physaria acutifolia Rydb. sharpleaf twinpod Physaria acutifolia var. acutifolia Rydb. southern twinpod Physaria brassicoides Rydb. double twinpod Physaria condensata Rollins tufted twinpod Physaria didymocarpa (Hook.) Gray common twinpod Physaria didymocarpa var. didymocarpa (Hook.) Gray common twinpod Physaria didymocarpa var. lanata A. Nels. common twinpod Physaria dornii Lichvar Tunp Range twinpod Physaria eburniflora Rollins Devils Gate twinpod Physaria integrifolia (Rollins) Lichvar Snake River twinpod Physaria integrifolia var. integrifolia (Rollins) Lichvar Snake River twinpod Physaria integrifolia var. monticola Lichvar Snake River twinpod Physaria saximontana Rollins Fremont County twinpod Physaria saximontana var. saximontana Rollins Fremont County twinpod Physaria vitulifera Rydb. roundtip twinpod 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. integra (Rydb.) R. Stuckey = Rorippa curvipes var. truncata 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 sinuata (Nutt.) A.S. Hitchc. spreading yellowcress Rorippa sphaerocarpa (Gray) Britt. roundfruit yellowcress Rorippa tenerrima Greene Modoc yellowcress Schoenocrambe linifolia (Nutt.) Greene flaxleaf plainsmustard Sinapis arvensis L. charlock mustard Sisymbrium altissimum L. tall tumblemustard Sisymbrium loeselii L. small tumbleweed mustard 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 tomentosa Parry hairy princesplume Stanleya tomentosa var. tomentosa Parry woolly princesplume Stanleya viridiflora Nutt. green princesplume Streptanthella longirostris (S. Wats.) Rydb. longbeak streptanthella Streptanthus cordatus Nutt. heartleaf twistflower Subularia aquatica L. waterawlwort Thelypodiopsis elegans (M.E. Jones) Rydb. Westwater tumblemustard 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 Cucurbita foetidissima Kunth Missouri gourd Echinocystis lobata (Michx.) Torr. & Gray wild cucumber CUPRESSACEAE Juniperus communis L. common juniper Juniperus communis var. depressa Pursh common juniper Juniperus depressa (Pursh) Raf. = Juniperus communis var. depressa Juniperus horizontalis Moench creeping juniper Juniperus osteosperma (Torr.) Little Utah juniper Juniperus scopulorum Sarg. Rocky Mountain juniper DENNSTAEDTIACEAE Pteridium aquilinum (L.) Kuhn western brackenfern Pteridium aquilinum var. latiusculum (Desv.) Underwood ex Heller 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 DRYOPTERIDACEAE Athyrium americanum (Butters) Maxon alpine ladyfern Athyrium filix-femina (L.) Roth common ladyfern Athyrium filix-femina ssp. cyclosorum (Rupr.) C. Christens. subarctic ladyfern Cystopteris fragilis (L.) Bernh. brittle bladderfern Dryopteris expansa (K. Presl) Fraser-Jenkins & Jermy spreading woodfern Dryopteris filix-mas (L.) Schott male fern Gymnocarpium disjunctum (Rupr.) Ching Pacific oakfern Gymnocarpium dryopteris (L.) Newman western oakfern Polystichum lonchitis (L.) Roth northern hollyfern Polystichum scopulinum (D.C. Eat.) Maxon mountain hollyfern Woodsia oregana D.C. Eat. Oregon woodsia Woodsia oregana ssp. oregana D.C. Eat. Oregon cliff fern Woodsia scopulina D.C. Eat. Rocky Mountain woodsia ELAEAGNACEAE Elaeagnus angustifolia L. Russian olive Elaeagnus commutata Bernh. ex Rydb. silverberry Shepherdia argentea (Pursh) Nutt. silver buffaloberry Shepherdia canadensis (L.) Nutt. russet buffaloberry ELATINACEAE Elatine triandra Schkuhr threestamen waterwort EPHEDRACEAE Ephedra viridis Coville mormon tea Ephedra viridis var. viridis Coville mormon tea 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 affine Engelm. = Equisetum hyemale var. affine Equisetum arvense L. field horsetail Equisetum fluviatile L. water horsetail Equisetum hyemale L. scouringrush horsetail Equisetum hyemale var. affine (Engelm.) A.A. Eat. scouringrush horsetail Equisetum laevigatum A. Braun smooth horsetail Equisetum 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 alpina (L.) Spreng. alpine bearberry Arctostaphylos rubra (Rehd. & Wilson) Fern. red fruit bearberry Arctostaphylos uva-ursi (L.) Spreng. kinnikinnick Chimaphila umbellata (L.) W. Bart. pipsissewa Chimaphila umbellata ssp. occidentalis (Rydb.) Hulten pipsissewa Gaultheria humifusa (Graham) Rydb. alpine spicywintergreen 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 Moneses uniflora ssp. uniflora (L.) Gray oneflowered woodnymph 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 chlorantha Sw. greenflowered wintergreen Pyrola elliptica Nutt. waxflower shinleaf Pyrola minor L. snowline wintergreen Pyrola picta Sm. whiteveined wintergreen Pyrola rotundifolia ssp. asarifolia (Michx.) A.& D. Love = Pyrola asarifolia ssp. asarifolia Pyrola secunda L. = Orthilia secunda Vaccinium cespitosum Michx. dwarf blueberry Vaccinium membranaceum Dougl. ex Torr. blue huckleberry Vaccinium myrtillus L. whortleberry Vaccinium myrtillus var. oreophilum (Rydb.) Dorn whortleberry Vaccinium scoparium Leib. ex Coville grouse whortleberry Vaccinium uliginosum L. bog blueberry EUPHORBIACEAE Chamaesyce fendleri (Torr. & Gray) Small Fendler's sandmat Chamaesyce geyeri (Engelm.) Small Geyer's sandmat Chamaesyce geyeri var. geyeri (Engelm.) Small 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 Chamaesyce stictospora (Engelm.) Small slimseed sandmat Croton texensis (Klotzsch) Muell.-Arg. Texas croton Euphorbia agraria Bieb. urban spurge Euphorbia brachycera Engelm. horned spurge Euphorbia cyparissias L. cypress spurge Euphorbia dentata Michx. toothed spurge Euphorbia esula L. wolf's milk Euphorbia esula var. esula L. wolf's milk Euphorbia esula var. uralensis (Fisch. ex Link) Dorn wolf's milk Euphorbia exstipulata Engelm. squareseed spurge Euphorbia exstipulata var. exstipulata Engelm. squareseed spurge Euphorbia fendleri Torr. & Gray = Chamaesyce fendleri 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 robusta (Engelm.) Small Rocky Mountain spurge Euphorbia serpyllifolia Pers. = Chamaesyce serpyllifolia ssp. serpyllifolia Euphorbia spathulata Lam. warty spurge FAGACEAE Quercus gambelii Nutt. Gambel's oak 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 Dicentra uniflora Kellogg longhorn steershead Fumaria officinalis L. drug fumitory Fumaria officinalis ssp. wirtgenii (W.D.J. Koch) Arcang. drug fumitory GENTIANACEAE Centaurium exaltatum (Griseb.) W. Wight ex Piper desert centaury Centaurium pulchellum (Sw.) Druce branched centaury Eustoma grandiflorum (Raf.) Shinners = Eustoma russellianum Eustoma russellianum (Hook.) G. Don showy prairiegentian Frasera speciosa Dougl. ex Griseb. showy frasera Gentiana affinis Griseb. pleated gentian Gentiana algida Pallas whitish gentian Gentiana calycosa Griseb. Rainier pleated gentian Gentiana forwoodii Gray = Gentiana affinis Gentiana fremontii Torr. moss gentian Gentiana nutans Bunge tundra gentian Gentiana parryi Engelm. Parry's gentian Gentiana prostrata Haenke pygmy gentian Gentiana rusbyi Greene = Gentiana affinis Gentiana thermalis Kuntze = Gentianopsis thermalis Gentianella amarella (L.) Boerner 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 Gentianopsis barbellata (Engelm.) Iltis perennial fringedgentian Gentianopsis detonsa (Rottb.) Ma windmill 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 atropurpureum Heller western purple cranesbill Geranium atropurpureum var. cowenii (Rydb.) Dorn western purple cranesbill Geranium bicknellii Britt. Bicknell's cranesbill Geranium caespitosum James pineywoods geranium Geranium caespitosum var. caespitosum James pineywoods geranium Geranium caespitosum var. fremontii (Torr. ex Gray) Dorn Fremont's geranium Geranium carolinianum L. Carolina geranium Geranium pusillum L. small geranium Geranium richardsonii Fisch. & Trautv. Richardson's geranium Geranium viscosissimum Fisch. & C.A. Mey. ex C.A. Mey. sticky geranium Geranium viscosissimum var. nervosum (Rydb.) C.L. Hitchc. sticky purple geranium Geranium viscosissimum var. viscosissimum Fisch. & C.A. Mey. ex C.A. Mey. sticky purple geranium GROSSULARIACEAE Grossularia = Ribes Ribes 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. pedicellare Brewer & S. Wats. whisky currant 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 montigenum McClatchie gooseberry currant Ribes oxyacanthoides L. Canadian gooseberry Ribes oxyacanthoides ssp. oxyacanthoides L. Canadian gooseberry Ribes oxyacanthoides ssp. setosum (Lindl.) Sinnott inland gooseberry Ribes rubrum L. cultivated currant Ribes viscosissimum Pursh sticky currant Ribes viscosissimum var. viscosissimum Pursh sticky currant HALORAGACEAE Myriophyllum quitense Kunth Andean watermilfoil Myriophyllum sibiricum Komarov shortspike watermilfoil Myriophyllum verticillatum L. whorlleaf watermilfoil HIPPURIDACEAE Hippuris vulgaris L. common marestail HYDRANGEACEAE Jamesia americana Torr. & Gray cliffbush Jamesia americana var. americana Torr. & Gray fivepetal cliffbush Philadelphus microphyllus Gray littleleaf mockorange Philadelphus occidentalis A. Nels. western mockorange Philadelphus occidentalis var. occidentalis A. Nels. western mockorange Philadelphus pubescens Loisel. hoary mockorange Philadelphus pubescens var. pubescens Loisel. hoary mockorange HYDROCHARITACEAE Elodea bifoliata St. John twoleaf waterweed Elodea canadensis Michx. Canadian waterweed HYDROPHYLLACEAE Ellisia nyctelea (L.) L. Aunt Lucy Hesperochiron californicus (Benth.) S. Wats. California hesperochiron Hesperochiron pumilus (Dougl. ex Griseb.) Porter dwarf hesperochiron Hydrophyllum capitatum Dougl. ex Benth. ballhead waterleaf Hydrophyllum capitatum var. capitatum Dougl. ex Benth. ballhead waterleaf Hydrophyllum fendleri (Gray) Heller Fendler's waterleaf Hydrophyllum fendleri var. fendleri (Gray) Heller Fendler's waterleaf Nama densum J.G. Lemmon leafy nama Nama densum var. parviflorum (Greenm.) C.L. Hitchc. leafy fiddleleaf Nemophila breviflora Gray basin nemophila Phacelia alba Rydb. white scorpionweed Phacelia demissa Gray Intermountain scorpionweed Phacelia demissa var. demissa Gray Intermountain scorpionweed Phacelia denticulata Osterhout Rocky Mountain scorpionweed Phacelia franklinii (R. Br.) Gray Franklin's phacelia Phacelia glandulifera Piper Phacelia glandulosa Nutt. glandular phacelia Phacelia hastata Dougl. ex Lehm. silverleaf phacelia Phacelia hastata var. hastata Dougl. ex Lehm. silverleaf phacelia Phacelia heterophylla Pursh varileaf phacelia Phacelia heterophylla ssp. virgata (Greene) Heckard varileaf phacelia Phacelia incana Brand hoary phacelia Phacelia ivesiana Torr. Ives' phacelia Phacelia linearis (Pursh) Holz. threadleaf phacelia Phacelia neomexicana Thurb. ex Torr. New Mexico scorpionweed Phacelia salina (A. Nels.) J.T. Howell Bitter Creek scorpionweed Phacelia scopulina (A. Nels.) J.T. Howell Debeque phacelia Phacelia scopulina var. scopulina (A. Nels.) J.T. Howell Debeque phacelia Phacelia sericea (Graham) Gray silky phacelia Phacelia sericea ssp. ciliosa (Rydb.) Gillett purplefringe Phacelia sericea ssp. sericea (Graham) Gray purplefringe Phacelia tetramera J.T. Howell fourpart scorpionweed IRIDACEAE Iris missouriensis Nutt. Rocky Mountain iris Sisyrinchium angustifolium P. Mill. narrowleaf 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 pallidum Cholewa & D. Henderson pale blueeyed grass ISOETACEAE Isoetes bolanderi Engelm. Bolander's quillwort Isoetes bolanderi var. bolanderi Engelm. Bolander's quillwort Isoetes occidentalis Henderson western quillwort LABIATAE Agastache foeniculum (Pursh) Kuntze blue giant hyssop Agastache urticifolia (Benth.) Kuntze nettleleaf giant hyssop Agastache urticifolia var. urticifolia (Benth.) Kuntze nettleleaf giant hyssop Dracocephalum parviflorum Nutt. American dragonhead Dracocephalum thymiflorum L. thymeleaf dragonhead Galeopsis ladanum L. red hempnettle Glechoma hederacea L. groundivy Hedeoma drummondii Benth. Drummond's falsepennyroyal Hedeoma hispida Pursh rough falsepennyroyal Lallemantia peltata (L.) Fisch. & C.A. Mey. lion's heart Lamium amplexicaule L. henbit deadnettle 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 spicata L. spearmint Monarda fistulosa L. wildbergamot beebalm Monarda fistulosa ssp. fistulosa var. menthifolia (Graham) Fern. mintleaf beebalm Monarda menthifolia Graham = Monarda fistulosa ssp. fistulosa var. menthifolia Monarda pectinata Nutt. pony beebalm Monardella glauca Greene Monardella odoratissima Benth. Pacific monardella Nepeta cataria L. catnip Nepeta grandiflora Bieb. Caucasus catmint Nepeta racemosa Lam. Physostegia parviflora Nutt. ex Gray western false dragonhead Prunella vulgaris L. common selfheal Prunella vulgaris ssp. lanceolata (W. Bart.) Hulten lance selfheal Salvia nemorosa L. woodland sage Salvia pratensis L. introduced sage Salvia reflexa Hornem. lanceleaf sage Scutellaria brittonii Porter Britton's skullcap Scutellaria epilobiifolia A. Hamilton = Scutellaria galericulata Scutellaria galericulata L. marsh 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 LEGUMINOSAE Amorpha canescens Pursh leadplant Amorpha fruticosa L. desert indigobush 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 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 bisulcatus var. haydenianus (Gray) Barneby Hayden's milkvetch Astragalus bisulcatus var. major (M.E. Jones) Welsh twogrooved milkvetch Astragalus bodinii Sheldon Bodin's milkvetch Astragalus calycosus Torr. ex S. Wats. matted poison milkvetch Astragalus calycosus var. calycosus Torr. ex S. Wats. Torrey's milk-vetch Astragalus canadensis L. Canadian milkvetch Astragalus canadensis var. brevidens (Gandog.) Barneby shorttooth Canadian milkvetch Astragalus canadensis var. canadensis L. Canadian milkvetch Astragalus ceramicus Sheldon painted milkvetch Astragalus ceramicus var. filifolius (Gray) F.J. Herm. painted milkvetch Astragalus chamaeleuce Gray cicada milkvetch Astragalus chamaeleuce var. chamaeleuce Gray cicada milkvetch Astragalus cibarius Sheldon silky milkvetch Astragalus cicer L. cicer milkvetch Astragalus coltonii M.E. Jones Colton's milkvetch Astragalus coltonii var. moabensis M.E. Jones Moab 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 drabelliformis Barneby bastard draba milkvetch Astragalus drummondii Dougl. ex Hook. Drummond's milkvetch Astragalus eucosmus B.L. Robins. elegant milkvetch Astragalus flavus Nutt. yellow 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 gilviflorus var. gilviflorus Sheldon plains milkvetch Astragalus gilviflorus var. purpureus Dorn plains milkvetch Astragalus gracilis Nutt. slender milkvetch Astragalus grayi Parry ex S. Wats. Gray's milkvetch Astragalus hyalinus M.E. Jones summer milkvetch Astragalus jejunus S. Wats. starveling milkvetch Astragalus jejunus var. articulatus Dorn starveling milkvetch Astragalus jejunus var. jejunus S. Wats. starveling milkvetch Astragalus kentrophyta Gray spiny milkvetch Astragalus kentrophyta var. elatus S. Wats. tall spiny milkvetch Astragalus kentrophyta var. jessiae (M.E. Peck) Barneby 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. chartaceus M.E. Jones broadleaf loco milkvetch Astragalus lentiginosus var. salinus (T.J. Howell) Barneby salty loco milkvetch Astragalus leptaleus Gray meadow milkvetch Astragalus lotiflorus Hook. lotus milkvetch Astragalus megacarpus (Nutt.) Gray great bladdery milkvetch Astragalus miser Dougl. weedy 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. oblongifolius (Rydb.) Cronq. timber milkvetch Astragalus miser var. praeteritus Barneby Yellowstone loco milkvetch Astragalus miser var. tenuifolius (Nutt.) Barneby timber milkvetch Astragalus missouriensis Nutt. Missouri milkvetch Astragalus missouriensis var. missouriensis Nutt. Missouri milkvetch Astragalus mollissimus Torr. woolly milkvetch Astragalus mollissimus var. mollissimus Torr. woolly milkvetch Astragalus molybdenus Barneby Leadville milkvetch Astragalus nelsonianus Barneby Nelson's milkvetch Astragalus oreganus Nutt. Oregon milkvetch Astragalus parryi Gray Parry's milkvetch Astragalus paysonii (Rydb.) Barneby Payson's milkvetch Astragalus pectinatus (Hook.) Dougl. ex G. Don narrowleaf milkvetch Astragalus plattensis Nutt. Platte River milkvetch Astragalus proimanthus Barneby precocious milkvetch Astragalus pubentissimus Torr. & Gray Green River milkvetch Astragalus purshii Dougl. ex Hook. woollypod 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 racemosus var. racemosus Pursh cream milkvetch Astragalus racemosus var. treleasei C.L. Porter Trelease's milkvetch Astragalus robbinsii (Oakes) Gray Robbins' milkvetch Astragalus robbinsii var. minor (Hook.) Barneby Robbins' milkvetch Astragalus sericoleucus Gray silky milkvetch Astragalus shortianus Nutt. Short's milkvetch Astragalus simplicifolius (Nutt.) Gray little bun milkvetch Astragalus spatulatus Sheldon tufted milkvetch Astragalus tenellus Pursh looseflower milkvetch Astragalus terminalis S. Wats. railhead milkvetch Astragalus tibetanus Benth. ex Bunge Tibet milkvetch Astragalus tridactylicus Gray foothill milkvetch Astragalus utahensis (Torr.) Torr. & Gray Utah milkvetch Astragalus vexilliflexus Sheldon bentflower milkvetch Astragalus vexilliflexus var. vexilliflexus Sheldon bentflower milkvetch Caragana arborescens Lam. Siberian peashrub Cicer arietinum L. chick pea Coronilla varia L. purple crownvetch Dalea aurea Nutt. ex Pursh golden prairieclover Dalea candida Willd. slender white prairieclover Dalea candida var. oligophylla (Torr.) Shinners white prairieclover Dalea cylindriceps Barneby Andean 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 Gleditsia triacanthos L. honeylocust 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 var. boreale Nutt. boreal sweetvetch Hedysarum occidentale Greene western sweetvetch Hedysarum sulphurescens Rydb. white sweetvetch Lathyrus lanszwertii Kellogg thickleaf peavine Lathyrus lanszwertii var. lanszwertii Kellogg Lanszwert's peavine Lathyrus lanszwertii var. leucanthus (Rydb.) Dorn aspen peavine Lathyrus ochroleucus Hook. cream peavine Lathyrus polymorphus Nutt. manystem peavine Lathyrus polymorphus ssp. incanus (Sm. & Rydb.) C.L. Hitchc. hoary vetchling Lathyrus polymorphus ssp. polymorphus var. polymorphus Nutt. manystem peavine Lathyrus sylvestris L. flat peavine Lotus corniculatus L. birdfoot deervetch Lotus unifoliolatus (Hook.) Benth. American birdsfoot trefoil Lupinus argenteus Pursh silvery lupine Lupinus argenteus ssp. argenteus var. argenteus Pursh silvery lupine Lupinus argenteus ssp. argenteus var. laxiflorus (Dougl. ex Lindl.) Dorn spur lupine Lupinus argenteus ssp. rubricaulis (Greene) Hess & D. Dunn silvery lupine Lupinus caespitosus Nutt. stemless dwarf lupine Lupinus caespitosus var. utahensis (S. Wats.) Cox Utah lupine Lupinus caudatus Kellogg tailcup lupine Lupinus caudatus ssp. argophyllus (Gray) L. Phillips Kellogg's spurred lupine Lupinus depressus Rydb. depressed lupine Lupinus lepidus Dougl. ex Lindl. Pacific lupine Lupinus leucophyllus Dougl. ex Lindl. velvet lupine Lupinus plattensis S. Wats. Nebraska lupine Lupinus polyphyllus Lindl. bigleaf lupine Lupinus prunophilus M.E. Jones hairy bigleaf lupine Lupinus pusillus Pursh rusty lupine Lupinus pusillus ssp. intermontanus (Heller) D. Dunn Intermountain lupine Lupinus pusillus ssp. pusillus Pursh rusty lupine Lupinus 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 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. 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. lagopus Nutt. haresfoot locoweed Oxytropis lambertii Pursh Lambert's crazyweed Oxytropis lambertii var. lambertii Pursh Oxytropis monticola Gray yellowflower locoweed Oxytropis multiceps Nutt. southwestern locoweed Oxytropis nana Nutt. Wyoming locoweed Oxytropis nana var. besseyi (Rydb.) Isely Bessey's pointvetch Oxytropis nana var. fallax (Barneby) Isely Wyoming locoweed Oxytropis nana var. obnapiformis (C.L. Porter) Isely woody crazyweed Oxytropis nana var. ventosa (Greene) Isely Wyoming locoweed Oxytropis parryi Gray Parry's crazyweed Oxytropis podocarpa Gray stalkedpod locoweed Oxytropis riparia Litv. Ruby Valley pointvetch Oxytropis sericea Nutt. silvery oxytrope Oxytropis splendens Dougl. ex Hook. showy pointvetch Oxytropis viscida var. viscida Nutt. sticky locoweed Parosela = Dalea Pediomelum argophyllum (Pursh) J. Grimes silverleaf scurfpea Pediomelum digitatum (Nutt. ex Torr. & Gray) Isely palmleaf Indian breadroot Pediomelum esculentum (Pursh) Rydb. breadroot scurfpea Pediomelum hypogaeum (Nutt. ex Torr. & Gray) Rydb. scurfpea Pediomelum hypogaeum var. hypogaeum (Nutt. ex Torr. & Gray) Rydb. scurfpea Pediomelum linearifolium (Torr. & Gray) J. Grimes narrowleaf Indian breadroot Petalostemon = Dalea Psoralea = Pediomelum Psoralea = Psoralidium Psoralidium batesii Rydb. = Psoralidium tenuiflorum Psoralidium lanceolatum (Pursh) Rydb. lemon scurfpea Psoralidium tenuiflorum (Pursh) Rydb. slimflower scurfpea Robinia pseudoacacia L. black locust Sophora nuttalliana B.L. Turner silky sophora Sphaerophysa salsula (Pallas) DC. alkali swainsonpea Thermopsis divaricarpa A. Nels. Thermopsis montana Nutt. Thermopsis montana var. montana Nutt. Thermopsis pinetorum Greene = Thermopsis divaricarpa Thermopsis rhombifolia (Nutt. ex Pursh) Nutt. ex Richards. prairie thermopsis Thermopsis rhombifolia var. rhombifolia (Nutt. ex Pursh) Nutt. ex Richards. prairie goldenbanner Trifolium andinum Nutt. Andes clover Trifolium andinum var. andinum Nutt. Intermountain clover Trifolium dasyphyllum Torr. & Gray alpine clover Trifolium fragiferum L. strawberry clover Trifolium gymnocarpon Nutt. hollyleaf clover Trifolium haydenii Porter Hayden's clover Trifolium haydenii var. barnebyi Isely Barneby's clover Trifolium hybridum L. alsike clover Trifolium longipes Nutt. longstalk clover Trifolium longipes ssp. reflexum (A. Nels.) J. Gillett droopflower clover Trifolium nanum Torr. dwarf clover Trifolium parryi Gray Parry's clover Trifolium pratense L. red clover Trifolium repens L. white 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 villosa Roth winter vetch LEMNACEAE Lemna minor L. common duckweed Lemna trisulca L. star duckweed Lemna valdiviana Phil. valdivia duckweed Spirodela polyrhiza (L.) Schleiden giant duckweed LENTIBULARIACEAE 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 cernuum Roth nodding onion Allium geyeri S. Wats. Geyer's onion Allium geyeri var. geyeri S. Wats. Geyer's onion Allium geyeri var. tenerum M.E. Jones bulbil onion Allium schoenoprasum L. wild chives Allium textile A. Nels. & J.F. Macbr. textile onion Androstephium breviflorum S. Wats. pink funnellily Asparagus officinalis L. garden asparagus 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 nuttallii Torr. & Gray sego lily Camassia quamash (Pursh) Greene small camas Camassia quamash ssp. utahensis Gould Utah small camas Disporum trachycarpum (S. Wats.) Benth. & Hook. f. roughfruit fairybells Erythronium grandiflorum Pursh dogtooth lily Fritillaria atropurpurea Nutt. spotted missionbells Fritillaria pudica (Pursh) Spreng. yellow missionbells 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 Lloydia serotina ssp. 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 Polygonatum biflorum (Walt.) Ell. king Solomon's seal Smilacina racemosa = Maianthemum racemosum Smilacina stellata (L.) Desf. = Maianthemum stellatum Streptopus amplexifolius (L.) DC. claspleaf twistedstalk Tofieldia glutinosa (Michx.) Pers. glutin tofieldia Tofieldia glutinosa ssp. montana C.L. Hitchc. tal tofieldia Trillium ovatum Pursh Pacific trillium Trillium ovatum ssp. ovatum Pursh Pacific trillium Triteleia grandiflora Lindl. wild hyacinth Triteleia grandiflora var. grandiflora Lindl. Veratrum californicum Dur. California false hellebore Veratrum californicum var. californicum Dur. California false hellebore Veratrum tenuipetalum Heller Colorado false hellebore Xerophyllum tenax (Pursh) Nutt. common beargrass Zigadenus elegans Pursh mountain deathcamas Zigadenus paniculatus (Nutt.) S. Wats. foothill deathcamas Zigadenus venenosus S. Wats. meadow deathcamas Zigadenus venenosus var. gramineus (Rydb.) Walsh ex M.E. Peck grassy deathcamas 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 kingii S. Wats. King's flax Linum lewisii Pursh prairie flax Linum lewisii var. lewisii Pursh Lewis' flax Linum puberulum (Engelm.) Heller plains 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 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 multiflora (Nutt.) Gray manyflowered mentzelia Mentzelia nuda (Pursh) Torr. & Gray bractless blazingstar Mentzelia oligosperma Nutt. ex Sims chickenthief Mentzelia pumila Nutt. ex Torr. & Gray dwarf mentzelia Mentzelia rusbyi Woot. Rusby's blazingstar Mentzelia sinuata (Rydb.) R.J. Hill leechleaf blazingstar Mentzelia speciosa Osterhout jeweled blazingstar LYCOPODIACEAE Huperzia selago (L.) Bernh. ex Mart. & Schrank fir clubmoss Huperzia selago var. selago (L.) Bernh. ex Mart. & Schrank fir clubmoss Lycopodium annotinum L. stiff clubmoss Lycopodium annotinum var. annotinum L. stiff clubmoss Lycopodium complanatum L. groundcedar Lycopodium dendroideum Michx. tree groundpine LYTHRACEAE Ammannia robusta Heer & Regel grand redstem Lythrum alatum Pursh winged lythrum Lythrum alatum var. alatum Pursh winged lythrum Lythrum salicaria L. purple loosestrife MALVACEAE Abutilon theophrasti Medik. velvetleaf Alcea rosea L. hollyhock Althaea rosea (L.) Cav. = Alcea rosea Callirhoe involucrata (Torr. & Gray) Gray purple poppymallow Iliamna rivularis (Dougl. ex Hook.) Greene streambank globemallow Malva moschata L. musk mallow Malva neglecta Wallr. common mallow Malva parviflora L. cheeseweed mallow Malva rotundifolia L. Malva rotundifolia auct. non L. = Malva neglecta Malva sylvestris L. high mallow Malva verticillata L. cluster mallow Sidalcea candida Gray white checkermallow Sidalcea neomexicana Gray New Mexico checkermallow Sidalcea neomexicana ssp. neomexicana Gray New Mexico checkermallow Sidalcea oregana (Nutt. ex Torr. & Gray) Gray Oregon checkermallow Sidalcea oregana ssp. oregana var. oregana (Nutt. ex Torr. & Gray) Gray Oregon checkermallow Sphaeralcea coccinea (Nutt.) Rydb. scarlet globemallow Sphaeralcea 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 MOLLUGINACEAE Mollugo verticillata L. green carpetweed MONOTROPACEAE Pterospora andromedea Nutt. woodland pinedrops MORACEAE Morus alba L. white mulberry NAJADACEAE Najas guadalupensis (Spreng.) Magnus southern waternymph Najas guadalupensis var. guadalupensis (Spreng.) Magnus Guadalupe waternymph NYCTAGINACEAE Abronia ammophila Greene Wyoming sand verbena Abronia elliptica A. Nels. fragrant white sand verbena Abronia fragrans Nutt. ex Hook. snowball sand verbena Abronia mellifera Dougl. ex Hook. white 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 polysepala Engelm. = Nuphar lutea ssp. polysepala OLEACEAE Fraxinus pennsylvanica Marsh. green ash ONAGRACEAE Calylophus lavandulifolius (Torr. & Gray) Raven lavenderleaf sundrops 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 parvula (Nutt. ex Torr. & Gray) Raven Lewis River suncup Camissonia scapoidea (Nutt. ex Torr. & Gray) Raven barestem eveningprimrose Camissonia scapoidea ssp. scapoidea (Nutt. ex Torr. & Gray) Raven Seorsa eveningprimrose Camissonia subacaulis (Pursh) Raven diffuseflower eveningprimrose Chamaenerion angustifolium (L.) Scop. = Epilobium angustifolium ssp. angustifolium Chamerion angustifolium (L.) Holub = 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 Circaea lutetiana L. broadleaf enchanter's nightshade Circaea lutetiana ssp. canadensis (L.) Aschers. & Magnus broadleaf enchanter's nightshade Clarkia pulchella Pursh pinkfairies 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 canum (Greene) Raven hummingbird trumpet Epilobium canum ssp. garrettii (A. Nels.) Raven Garrett's firechalice Epilobium ciliatum Raf. hairy willowherb Epilobium ciliatum ssp. ciliatum Raf. coast willowweed Epilobium ciliatum ssp. glandulosum (Lehm.) Hoch & Raven glandular willowweed Epilobium clavatum Trel. clubfruit willowherb Epilobium 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 hornemannii ssp. hornemannii Reichenb. Hornemann's willowherb Epilobium lactiflorum Hausskn. milkflower willowweed Epilobium latifolium L. dwarf fireweed Epilobium leptophyllum Raf. bog willowherb 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 neomexicana Woot. New Mexico beeblossom Gaura neomexicana ssp. coloradensis (Rydb.) Raven & Gregory Colorado 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 canescens Torr. & Frem. spotted eveningprimrose Oenothera cespitosa Nutt. tufted eveningprimrose Oenothera cespitosa ssp. cespitosa Nutt. tufted eveningprimrose Oenothera cespitosa ssp. macroglottis (Rydb.) W.L. Wagner tufted eveningprimrose Oenothera cespitosa ssp. marginata (Nutt. ex Hook. & Arn.) Munz tufted eveningprimrose Oenothera coronopifolia Torr. & Gray crownleaf eveningprimrose Oenothera flava (A. Nels.) Garrett yellow eveningprimrose Oenothera howardii (A. Nels.) W.L. Wagner Howard's eveningprimrose Oenothera laciniata Hill cutleaf eveningprimrose Oenothera latifolia (Rydb.) Munz mountain eveningprimrose Oenothera nuttallii Sweet Nuttall's eveningprimrose Oenothera pallida Lindl. pale eveningprimrose Oenothera pallida ssp. pallida Lindl. pale eveningprimrose Oenothera pallida ssp. trichocalyx (Nutt.) Munz & W. Klein pale eveningprimrose Oenothera villosa Thunb. hairy eveningprimrose Oenothera villosa ssp. strigosa (Rydb.) W. Dietr. & Raven hairy eveningprimrose Oenothera villosa ssp. villosa Thunb. hairy eveningprimrose OPHIOGLOSSACEAE Botrychium ascendens W.H. Wagner trianglelobe moonwort Botrychium campestre W.H. Wagner & Farrar Iowa moonwort Botrychium lanceolatum (Gmel.) Angstr. lanceleaf grapefern Botrychium lanceolatum var. lanceolatum (Gmel.) Angstr. lanceleaf grapefern Botrychium lunaria (L.) Sw. common moonwort Botrychium multifidum (Gmel.) Trev. leathery grapefern Botrychium simplex E. Hitchc. little grapefern Botrychium simplex var. compositum (Lasch) Milde little grapefern Botrychium simplex var. simplex E. Hitchc. little grapefern Botrychium virginianum (L.) Sw. rattlesnake fern Ophioglossum pusillum Raf. northern adderstongue Ophioglossum vulgatum L. southern 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 Corallorrhiza maculata (Raf.) Raf. summer coralroot Corallorrhiza mertensiana Bong. Pacific coralroot Corallorrhiza striata Lindl. hooded coralroot Corallorrhiza trifida Chatelain yellow coralroot Corallorrhiza wisteriana Conrad spring coralroot Cypripedium calceolus L. Cypripedium fasciculatum Kellogg ex S. Wats. clustered lady's slipper Cypripedium montanum Dougl. ex Lindl. mountain lady's slipper Cypripedium pubescens Willd. greater yellow lady's slipper Epipactis gigantea Dougl. ex Hook. giant helleborine Goodyera oblongifolia Raf. western rattlesnake plantain Habenaria bracteata (Muhl. ex Willd.) R. Br. ex Ait. f. = Coeloglossum viride var. virescens Habenaria = Platanthera Habenaria unalascensis (Spreng.) S. Wats. = Piperia unalascensis Limnorchis = Platanthera Listera borealis Morong northern twayblade Listera caurina Piper northwestern twayblade Listera convallarioides (Sw.) Nutt. ex Ell. broadlipped twayblade Listera cordata (L.) R. Br. ex Ait. f. heartleaf twayblade Piperia 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 stricta Lindl. Modoc bog orchid Spiranthes romanzoffiana Cham. hooded ladiestresses OROBANCHACEAE Orobanche corymbosa (Rydb.) Ferris flattop broomrape Orobanche corymbosa ssp. corymbosa (Rydb.) Ferris flattop broomrape Orobanche fasciculata Nutt. clustered broomrape Orobanche ludoviciana Nutt. Louisiana broomrape Orobanche ludoviciana ssp. ludoviciana Nutt. sand broomrape Orobanche uniflora L. oneflowered broomrape OXALIDACEAE Oxalis dillenii Jacq. Dillen's oxalis Oxalis stricta L. common yellow oxalis Oxalis violacea L. violet woodsorrel PAEONIACEAE Paeonia brownii Dougl. ex Hook. Brown's peony PAPAVERACEAE Argemone hispida Gray rough pricklypoppy Argemone polyanthemos (Fedde) G.B. Ownbey crested pricklypoppy Chelidonium majus L. greater celandine Papaver lapponicum (Tolm.) Nordh. Arctic poppy Papaver lapponicum ssp. occidentale (Lundstr.) Knaben Lapland poppy PEDALIACEAE Martynia proboscidea Gloxin = Proboscidea louisianica Proboscidea louisianica (P. Mill.) Thellung common devilsclaw PINACEAE Abies balsamea ssp. lasiocarpa (Hook.) Boivin = Abies lasiocarpa var. lasiocarpa Abies concolor (Gord. & Glend.) Lindl. ex Hildebr. white fir Abies concolor var. concolor (Gord. & Glend.) Lindl. ex Hildebr. white fir Abies lasiocarpa (Hook.) Nutt. subalpine fir Abies lasiocarpa var. lasiocarpa (Hook.) Nutt. subalpine fir Larix occidentalis Nutt. western larch Picea engelmannii Parry ex Engelm. Engelmann's spruce Picea glauca (Moench) Voss white spruce Picea pungens Engelm. blue spruce Pinus albicaulis Engelm. whitebark pine Pinus contorta Dougl. ex Loud. lodgepole pine Pinus contorta var. latifolia Engelm. ex S. Wats. tall lodgepole pine Pinus edulis Engelm. twoneedle pinyon Pinus flexilis James limber pine Pinus ponderosa P.& C. Lawson ponderosa pine Pseudotsuga menziesii (Mirbel) Franco Douglas fir Pseudotsuga menziesii var. glauca (Beissn.) Franco Rocky Mountain Douglas fir PLANTAGINACEAE Plantago elongata Pursh longleaf plantain Plantago elongata ssp. elongata Pursh prairie plantain Plantago eriopoda Torr. redwool plantain Plantago lanceolata L. narrowleaf plantain Plantago major L. common plantain Plantago patagonica Jacq. woolly plantain Plantago tweedyi Gray Tweedy's plantain POLEMONIACEAE Collomia debilis (S. Wats.) Greene alpine mountaintrumpet Collomia debilis var. debilis (S. Wats.) Greene alpine mountaintrumpet Collomia debilis var. trifida Payson alpine mountaintrumpet Collomia grandiflora Dougl. ex Lindl. largeflower mountaintrumpet Collomia linearis Nutt. narrowleaf mountaintrumpet Collomia tenella Gray diffuse mountaintrumpet Eriastrum wilcoxii (A. Nels.) Mason Wilcox's woolstar Gilia leptomeria Gray sand gilia Gilia ophthalmoides Brand eyed gilia Gilia pinnatifida Nutt. ex Gray sticky gilia Gilia tenerrima Gray delicate gilia Gilia tweedyi Rydb. Tweedy's gila Gymnosteris parvula Heller smallflower gymnosteris Ipomopsis aggregata (Pursh) V. Grant skyrocket gilia Ipomopsis aggregata ssp. aggregata (Pursh) V. Grant skyrocket gilia Ipomopsis aggregata ssp. attenuata (Gray) V.& A. Grant scarlet skyrocket 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 congesta ssp. pseudotypica (Constance & Rollins) 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 Ipomopsis spicata ssp. orchidacea (Brand) Wilken & Hartman orchid gilia Ipomopsis spicata ssp. orchidacea var. cephaloidea (Rydb.) Wilken & Hartman spiked gilia Ipomopsis spicata ssp. robruthiorum Wilken & Hartman Robruth's gilia Ipomopsis spicata ssp. spicata (Nutt.) V. Grant spiked gilia Ipomopsis tenuituba (Rydb.) V. Grant slendertube skyrocket Ipomopsis tenuituba ssp. tenuituba (Rydb.) V. Grant slendertube skyrocket Leptodactylon caespitosum Nutt. mat pricklygilia Leptodactylon pungens (Torr.) Torr. ex Nutt. granite pricklygilia Leptodactylon watsonii (Gray) Rydb. Watson's pricklygilia Linanthus harknessii (Curran) Greene Harkness' flaxflower Linanthus harknessii ssp. harknessii (Curran) Greene Harkness' flaxflower Linanthus nuttallii (Gray) Greene ex Milliken Nuttall's deserttrumpets Linanthus nuttallii ssp. nuttallii (Gray) Greene ex Milliken Nuttall's deserttrumpets Linanthus septentrionalis Mason northern linanthus Navarretia breweri (Gray) Greene Brewer's navarretia Navarretia intertexta (Benth.) Hook. needleleaf navarretia Navarretia intertexta ssp. propinqua (Suksdorf) Day near navarretia Phlox alyssifolia Greene alyssumleaf phlox Phlox andicola E. Nels. prairie 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. muscoides (Nutt.) Wherry musk phlox Phlox kelseyi Britt. Kelsey's phlox Phlox longifolia Nutt. longleaf phlox Phlox multiflora A. Nels. flowery phlox Phlox pulvinata (Wherry) Cronq. cushion phlox Phlox pungens Dorn prickly phlox Polemonium brandegei (Gray) Greene Brandegee's Jacobsladder Polemonium foliosissimum Gray towering Jacobsladder Polemonium foliosissimum var. alpinum Brand alpine Jacobsladder Polemonium micranthum Benth. annual polemonium Polemonium occidentale Greene western polemonium Polemonium occidentale ssp. occidentale Greene western polemonium Polemonium pulcherrimum Hook. skunkleaf polemonium Polemonium pulcherrimum ssp. pulcherrimum Hook. pretty Jacobsladder Polemonium viscosum Nutt. sticky polemonium POLYGALACEAE Polygala alba Nutt. white milkwort Polygala senega L. Seneca snakeroot Polygala senega var. senega L. Seneca snakeroot Polygala verticillata L. whorled milkwort POLYGONACEAE Eriogonum acaule Nutt. singlestem buckwheat Eriogonum alatum Torr. winged buckwheat Eriogonum alatum var. alatum Torr. winged 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 brevicaule var. micranthum (Nutt.) Reveal shortstem buckwheat Eriogonum caespitosum Nutt. matted buckwheat Eriogonum cernuum Nutt. nodding buckwheat Eriogonum cernuum var. cernuum Nutt. nodding buckwheat Eriogonum corymbosum Benth. crispleaf buckwheat Eriogonum corymbosum var. corymbosum Benth. crispleaf buckwheat Eriogonum divaricatum Hook. divergent buckwheat Eriogonum effusum Nutt. spreading buckwheat Eriogonum effusum var. effusum Nutt. spreading buckwheat Eriogonum exilifolium Reveal dropleaf 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 gordonii Benth. Gordon's buckwheat Eriogonum heracleoides Nutt. parsnipflower buckwheat Eriogonum heracleoides var. heracleoides Nutt. parsnipflower buckwheat Eriogonum hookeri S. Wats. Hooker's buckwheat Eriogonum inflatum Torr. & Frem. Native American pipeweed Eriogonum jamesii Benth. James' buckwheat Eriogonum jamesii var. flavescens S. Wats. James' buckwheat Eriogonum lagopus Rydb. parasol buckwheat Eriogonum mancum Rydb. imperfect buckwheat Eriogonum microthecum Nutt. slender buckwheat Eriogonum microthecum var. laxiflorum Hook. slender buckwheat Eriogonum ovalifolium Nutt. cushion buckwheat Eriogonum ovalifolium var. ochroleucum (Small ex Rydb.) M.E. Peck cushion buckwheat Eriogonum ovalifolium var. ovalifolium Nutt. cushion buckwheat Eriogonum ovalifolium var. purpureum (Nutt.) Dur. cushion buckwheat Eriogonum pauciflorum Pursh fewflower buckwheat Eriogonum 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. umbellatum Torr. sulphurflower buckwheat Fagopyrum esculentum Moench fagopyrum Koenigia islandica L. island purslane Oxyria digyna (L.) Hill alpine mountainsorrel Oxytheca dendroidea Nutt. narrowleaf oxytheca Polygonum achoreum Blake leathery knotweed Polygonum amphibium L. water knotweed Polygonum amphibium var. emersum Michx. longroot smartweed Polygonum amphibium var. stipulaceum Coleman water smartweed Polygonum aviculare L. prostrate knotweed Polygonum bistortoides Pursh American bistort 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. spergulariiforme (Meisn. ex Small) Hickman scatter knotweed Polygonum erectum L. erect knotweed Polygonum lapathifolium L. curlytop knotweed Polygonum minimum S. Wats. broadleaf knotweed Polygonum pensylvanicum L. Pennsylvania smartweed Polygonum persicaria L. spotted ladysthumb 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 ramosissimum Michx. bushy knotweed Polygonum scandens L. climbing false buckwheat Polygonum scandens var. scandens L. climbing false buckwheat Polygonum viviparum L. alpine bistort Rheum rhabarbarum L. garden rhubarb Rumex acetosa L. garden sorrel Rumex acetosa ssp. 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 densiflorus Osterhout denseflowered dock Rumex hymenosepalus Torr. canaigre dock Rumex maritimus L. golden dock Rumex patientia L. patience dock Rumex 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 Stenogonum salsuginosum Nutt. salty eriogonum POLYPODIACEAE Polypodium saximontanum Windham Rocky Mountain polypody PORTULACACEAE Cistanthe rosea (S. Wats.) Hershkovitz rosy pussypaws Cistanthe umbellata (Torr.) Hershkovitz Mt. Hood pussypaws Cistanthe umbellata var. caudicifera (Gray) Kartesz & Gandhi cistanthe Claytonia lanceolata Pursh lanceleaf springbeauty Claytonia lanceolata var. flava (A. Nels.) C.L. Hitchc. lanceleaf springbeauty Claytonia lanceolata var. lanceolata Pursh lanceleaf springbeauty Claytonia megarhiza (Gray) Parry ex S. Wats. alpine springbeauty Claytonia megarhiza var. megarhiza (Gray) Parry ex S. Wats. alpine springbeauty Claytonia perfoliata Donn ex Willd. miner's lettuce Claytonia umbellata S. Wats. Great Basin springbeauty 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 linearis (Dougl. ex Hook.) Greene narrowleaf minerslettuce Portulaca oleracea L. little hogweed Talinum parviflorum Nutt. sunbright 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 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 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 minima (L.) Krause chaffweed Androsace chamaejasme Wulfen sweetflower rockjasmine Androsace chamaejasme ssp. carinata (Torr.) Hulten sweetflower rockjasmine Androsace filiformis Retz. filiform rockjasmine Androsace occidentalis Pursh western rockjasmine Androsace septentrionalis L. pygmyflower rockjasmine Androsace septentrionalis ssp. subulifera (Gray) G.T. Robbins pygmyflower rockjasmine Dodecatheon conjugens Greene Bonneville shootingstar Dodecatheon conjugens var. conjugens Greene Bonneville shootingstar Dodecatheon jeffreyi Van Houtte tall mountain shootingstar Dodecatheon pulchellum (Raf.) Merr. darkthroat 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 egaliksensis Wormsk. ex Hornem. Greenland primrose Primula incana M.E. Jones silvery primrose Primula parryi Gray Parry's primrose PTERIDACEAE Adiantum aleuticum (Rupr.) Paris Aleutian maidenhair Argyrochosma fendleri (Kunze) Windham Fendler's falsecloak fern Aspidotis densa (Brack.) Lellinger Indian's dream Cheilanthes feei T. Moore slender lipfern Cryptogramma acrostichoides R. Br. American rockbrake Cryptogramma stelleri (Gmel.) Prantl fragile rockbrake 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 RANUNCULACEAE Aconitum columbianum Nutt. Columbian monkshood Aconitum columbianum ssp. columbianum Nutt. Aconitum columbianum var. columbianum Nutt. Columbian monkshood Actaea rubra (Ait.) Willd. red baneberry 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 Poir. Pacific anemone Anemone multifida var. multifida Poir. Pacific anemone Anemone narcissiflora L. narcissus anemone Anemone nuttalliana DC. = Pulsatilla patens ssp. multifida Anemone parviflora Michx. smallflowered anemone Anemone patens L. = Pulsatilla patens ssp. patens Anemone tetonensis Porter ex Britt. Teton anemone Anemone virginiana L. tall thimbleweed Aquilegia brevistyla Hook. smallflower columbine Aquilegia coerulea James Colorado blue columbine Aquilegia coerulea var. coerulea James Colorado blue columbine Aquilegia flavescens S. Wats. yellow columbine Aquilegia flavescens var. flavescens S. Wats. yellow columbine Aquilegia flavescens var. miniata A. Nels. & J.F. Macbr. yellow columbine Aquilegia formosa Fisch. ex DC. western columbine Aquilegia formosa var. formosa Fisch. ex DC. crimson columbine Aquilegia jonesii Parry Jones' columbine Aquilegia laramiensis A. Nels. Laramie columbine Caltha leptosepala DC. white marshmarigold Caltha leptosepala ssp. leptosepala DC. white 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 Delphinium X burkei Greene Burk larkspur Delphinium X occidentale (S. Wats.) S. Wats. duncecap larkspur Delphinium barbeyi (Huth) Huth tall larkspur Delphinium bicolor Nutt. little larkspur Delphinium geyeri Greene Geyer's larkspur Delphinium glaucum S. Wats. Sierra larkspur Delphinium nuttallianum Pritz. ex Walp. Nuttal's larkspur Delphinium nuttallianum var. nuttallianum Pritz. ex Walp. Nuttal's larkspur 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 patens (L.) P. Mill. American pasqueflower Pulsatilla patens ssp. multifida (Pritz.) Zamels cutleaf anemone Pulsatilla patens ssp. patens (L.) P. Mill. American pasqueflower Ranunculus abortivus L. littleleaf buttercup Ranunculus abortivus var. abortivus L. littleleaf buttercup Ranunculus acriformis Gray sharpleaf buttercup Ranunculus acriformis var. 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. alismifolius Geyer ex Benth. plantainleaf buttercup Ranunculus alismifolius var. davisii L. Benson Davis' buttercup Ranunculus alismifolius var. montanus S. Wats. waterplantain buttercup Ranunculus aquatilis L. whitewater crowfoot Ranunculus cardiophyllus Hook. heartleaf buttercup Ranunculus circinatus Sibthorp buttercup Ranunculus cymbalaria Pursh alkali buttercup Ranunculus cymbalaria var. cymbalaria Pursh alkali buttercup Ranunculus cymbalaria var. saximontanus Fern. Rocky Mountain buttercup Ranunculus eschscholtzii Schlecht. Eschscholtz's buttercup Ranunculus eschscholtzii var. eschscholtzii Schlecht. Eschscholtz's buttercup Ranunculus eschscholtzii var. trisectus (Eastw.) L. Benson threesection buttercup Ranunculus eximius Greene tundra buttercup Ranunculus flabellaris Raf. yellow water buttercup Ranunculus flammula L. spearwort buttercup Ranunculus flammula var. filiformis (Michx.) Hook. flam buttercup Ranunculus glaberrimus Hook. sagebrush buttercup Ranunculus glaberrimus var. ellipticus (Greene) Greene elliptical buttercup Ranunculus gmelinii DC. 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 longirostris Godr. longbeak buttercup Ranunculus macounii Britt. Macoun's buttercup Ranunculus natans C.A. Mey. nodding buttercup Ranunculus occidentalis Nutt. western buttercup Ranunculus occidentalis var. 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 pygmaeus Wahlenb. pygmy buttercup Ranunculus pygmaeus var. pygmaeus Wahlenb. pygmy buttercup Ranunculus ranunculinus (Nutt.) Rydb. tadpole buttercup Ranunculus repens L. creeping buttercup Ranunculus repens var. degeneratus Schur creeping buttercup Ranunculus repens var. repens L. creeping buttercup Ranunculus sceleratus L. celeryleaf buttercup Ranunculus sceleratus var. multifidus Nutt. blister buttercup Ranunculus trichophyllus Chaix whitewater crowfoot Ranunculus trichophyllus var. trichophyllus Chaix hairleaf water buttercup Ranunculus uncinatus D. Don ex G. Don hooked buttercup Ranunculus uncinatus var. parviflorus (Torr.) L. Benson common Idaho buttercup Ranunculus uncinatus var. uncinatus D. Don ex G. Don woodland buttercup Ranunculus verecundus B.L. Robins. ex Piper wetslope buttercup Thalictrum alpinum L. alpine meadowrue Thalictrum dasycarpum Fisch. & Ave-Lall. purple meadowrue Thalictrum fendleri Engelm. ex Gray Fendler's meadowrue Thalictrum fendleri var. fendleri Engelm. ex Gray Fendler's meadowrue Thalictrum occidentale Gray western meadowrue Thalictrum revolutum DC. waxyleaf 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 fendleri Gray Fendler's ceanothus Ceanothus herbaceus Raf. Jersey tea Ceanothus martinii M.E. Jones Martin's ceanothus Ceanothus velutinus Dougl. ex Hook. snowbrush ceanothus Ceanothus velutinus var. velutinus Dougl. ex Hook. Frangula alnus P. Mill. buckthorn Rhamnus alnifolia L'Her. alderleaf buckthorn Rhamnus cathartica L. common buckthorn Rhamnus frangula L. = Frangula alnus ROSACEAE Agrimonia gryposepala Wallr. tall hairy agrimony Agrimonia striata Michx. roadside agrimony Amelanchier alnifolia (Nutt.) Nutt. ex M. Roemer Saskatoon serviceberry Amelanchier alnifolia var. alnifolia (Nutt.) Nutt. ex M. Roemer Saskatoon serviceberry Amelanchier pumila (Torr. & Gray) Nutt. ex M. Roemer dwarf serviceberry Amelanchier utahensis Koehne Utah serviceberry Argentina anserina (L.) Rydb. silverweed cinquefoil Cercocarpus intricatus S. Wats. littleleaf mountain mahogany Cercocarpus intricatus var. 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 Cercocarpus montanus var. montanus Raf. birchleaf 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 columbiana var. chrysocarpa (Ashe) Dorn = Crataegus chrysocarpa Crataegus douglasii Lindl. black hawthorn Crataegus douglasii var. douglasii Lindl. Douglas' hawthorn Crataegus rivularis Nutt. river hawthorn Crataegus succulenta Schrad. ex Link fleshy hawthorn Dryas octopetala L. white dryad Dryas octopetala ssp. hookeriana (Juz.) Hulten Hooker's mountainavens Fragaria vesca L. woodland strawberry Fragaria virginiana Duchesne Virginia strawberry Geum aleppicum Jacq. yellow avens Geum canadense Jacq. white avens Geum macrophyllum Willd. largeleaf avens Geum macrophyllum var. perincisum (Rydb.) Raup largeleaf avens Geum rivale L. purple avens Geum rossii (R. Br.) Ser. Ross' avens Geum rossii var. turbinatum (Rydb.) C.L. Hitchc. Ross' avens Geum triflorum Pursh prairiesmoke Geum triflorum var. ciliatum (Pursh) Fassett old man's whiskers Geum triflorum var. triflorum Pursh old man's whiskers Holodiscus dumosus (Nutt. ex Hook.) Heller rockspirea Horkelia fusca Lindl. tawny horkelia Horkelia fusca ssp. parviflora (Nutt. ex Torr. & Gray) Keck smallflower horkelia Ivesia gordonii (Hook.) Torr. & Gray Gordon's ivesia Kelseya uniflora (S. Wats.) Rydb. oneflower kelseya Malus coronaria (L.) P. Mill. sweet crabapple Malus coronaria var. coronaria (L.) P. Mill. sweet crabapple Malus sylvestris P. Mill. apple Pentaphylloides floribunda (Pursh) A. Love shrubby cinquefoil Petrophyton caespitosum (Nutt.) Rydb. mat rockspirea Physocarpus alternans (M.E. Jones) J.T. Howell dwarf ninebark Physocarpus malvaceus (Greene) Kuntze mallow ninebark Physocarpus monogynus (Torr.) Coult. mountain ninebark Potentilla ambigens Greene silkyleaf cinquefoil Potentilla anserina L. = Argentina anserina Potentilla argentea L. silver cinquefoil Potentilla arguta Pursh tall cinquefoil Potentilla biennis Greene biennial cinquefoil Potentilla bipinnatifida Dougl. ex Hook. tansy cinquefoil Potentilla brevifolia Nutt. ex Torr. & Gray sparseleaf cinquefoil Potentilla concinna Richards. elegant cinquefoil Potentilla concinna var. bicrenata (Rydb.) Welsh & Johnston red 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 effusa Dougl. ex Lehm. branched cinquefoil Potentilla effusa var. effusa Dougl. ex Lehm. branched cinquefoil Potentilla fissa Nutt. bigflower cinquefoil Potentilla flabellifolia Hook. ex Torr. & Gray high mountain cinquefoil Potentilla glandulosa Lindl. gland 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 hippiana Lehm. woolly cinquefoil Potentilla hippiana var. hippiana Lehm. woolly cinquefoil Potentilla hookeriana Lehm. Hooker's cinquefoil Potentilla nana Willd. ex Schlecht. arctic cinquefoil Potentilla nivea L. snow cinquefoil Potentilla norvegica L. 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 paradoxa Nutt. Paradox cinquefoil Potentilla pectinisecta Rydb. combleaf 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 rubricaulis Lehm. Rocky Mountain cinquefoil Potentilla subjuga Rydb. Colorado cinquefoil Potentilla uniflora Ledeb. oneflower cinquefoil Prunus americana Marsh. American plum Prunus emarginata (Dougl. ex Hook.) Walp. bitter cherry Prunus pensylvanica L. f. pin 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 nutkana K. Presl Nootka rose Rosa nutkana var. hispida Fern. bristly Nootka rose Rosa woodsii Lindl. Woods' rose Rubus arcticus L. arctic blackberry Rubus arcticus ssp. acaulis (Michx.) Focke dwarf raspberry Rubus deliciosus Torr. delicious 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 parviflorus Nutt. thimbleberry Rubus parviflorus var. parviflorus Nutt. western thimbleberry Rubus pubescens Raf. dwarf red blackberry Rubus strigosus Michx. = Rubus idaeus ssp. strigosus 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 Spiraea betulifolia Pallas white spirea Spiraea betulifolia var. lucida (Dougl. ex Greene) C.L. Hitchc. shinyleaf spirea Spiraea splendens Baumann ex K. Koch rose meadowsweet RUBIACEAE Galium aparine L. stickywilly Galium bifolium S. Wats. twinleaf bedstraw Galium boreale L. northern bedstraw Galium coloradoense W. Wight Colorado bedstraw Galium mollugo L. false baby's breath Galium trifidum L. 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 X brayshawii Boivin Brayshaw's poplar Populus X canadensis Moench (pro sp.) Canada poplar Populus X jackii Sarg. Jack's poplar Populus alba L. white poplar Populus angustifolia James narrowleaf cottonwood Populus balsamifera L. balsam poplar Populus balsamifera ssp. balsamifera L. balsam poplar Populus balsamifera ssp. trichocarpa (Torr. & Gray ex Hook.) Brayshaw black cottonwood Populus deltoides Bartr. ex Marsh. eastern cottonwood Populus deltoides ssp. monilifera (Ait.) Eckenwalder plains cottonwood Populus deltoides ssp. wislizeni (S. Wats.) Eckenwalder Rio Grande cottonwood Populus nigra L. Lombardy poplar Populus tremuloides Michx. quaking aspen Salix amygdaloides Anderss. peachleaf willow Salix arctica R. Br. ex Richards. Salix babylonica L. weeping willow Salix barclayi Anderss. Barclay's willow Salix barrattiana Hook. Barratt's willow Salix bebbiana Sarg. Bebb willow Salix boothii Dorn Booth's willow Salix 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 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 irrorata Anderss. sandbar willow Salix lemmonii Bebb Lemmon's willow Salix ligulifolia (Ball) Ball ex Schneid. strapleaf 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 orestera Schneid. Sierra willow Salix pentandra L. laurel 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 tweedyi (Bebb ex Rose) Ball Tweedy's willow Salix wolfii Bebb Wolf's willow SANTALACEAE Comandra pallida A. DC. = Comandra umbellata ssp. pallida Comandra umbellata (L.) Nutt. bastard toadflax Comandra umbellata ssp. pallida (A. DC.) Piehl pale bastard toadflax SAXIFRAGACEAE Boykinia heucheriformis (Rydb.) Rosendahl alumroot brookfoam Boykinia jamesii (Torr.) Engl. James' telesonix Conimitella williamsii (D.C. Eat.) Rydb. Williams' miterwort Heuchera bracteata (Torr.) Ser. bracted alumroot Heuchera cylindrica Dougl. ex Hook. roundleaf alumroot Heuchera cylindrica var. cylindrica Dougl. ex Hook. roundleaf alumroot Heuchera parvifolia Nutt. ex Torr. & Gray littleleaf alumroot Heuchera richardsonii R. Br. Richardson's alumroot Lithophragma glabrum Nutt. bulbous woodlandstar Lithophragma parviflorum (Hook.) Nutt. ex Torr. & Gray smallflower woodlandstar Lithophragma tenellum Nutt. slender woodlandstar Mitella pentandra Hook. fivestamen miterwort Mitella stauropetala Piper smallflower miterwort Mitella stauropetala var. stenopetala (Piper) Rosendahl drywoods miterwort Parnassia fimbriata Koenig Rocky Mountain parnassia Parnassia fimbriata var. fimbriata Koenig fringed grass of Parnassus Parnassia 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 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 flagellaris Willd. ex Sternb. whiplash saxifrage Saxifraga flagellaris ssp. crandallii (Gandog.) Hulten Crandall's 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 rhomboidea Greene diamondleaf saxifrage Saxifraga rivularis L. weak saxifrage Saxifraga serpyllifolia Pursh thymeleaf saxifrage Saxifraga subapetala E. Nels. Yellowstone saxifrage Sullivantia hapemanii (Coult. & Fisher) Coult. Hapeman's coolwort Sullivantia hapemanii var. hapemanii (Coult. & Fisher) Coult. Hapeman's sullivantia SCROPHULARIACEAE Agalinis tenuifolia (Vahl) Raf. slenderleaf false foxglove Agalinis tenuifolia var. parviflora (Nutt.) Pennell slenderleaf false foxglove Bacopa rotundifolia (Michx.) Wettst. disk waterhyssop Besseya alpina (Gray) Rydb. alpine besseya Besseya plantaginea (James) Rydb. White River coraldrops Besseya wyomingensis (A. Nels.) Rydb. Wyoming besseya Castilleja angustifolia (Nutt.) G. Don northwestern Indian paintbrush Castilleja angustifolia var. angustifolia (Nutt.) G. Don northwestern Indian paintbrush Castilleja applegatei Fern. wavyleaf Indian paintbrush Castilleja applegatei ssp. martinii (Abrams) Chuang & Heckard Castilleja applegatei ssp. pinetorum (Fern.) Chuang & Heckard 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 linariifolia Benth. Wyoming 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 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 jamesii Benth. Rocky Mountain snowlover Collinsia parviflora Lindl. smallflower blue eyed Mary Cordylanthus ramosus Nutt. ex Benth. bushy bird's beak 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 Mimulus breviflorus Piper shortflower monkeyflower 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 rubellus Gray red monkeyflower Mimulus suksdorfii Gray Suksdorf's monkeyflower Mimulus tilingii Regel Tiling's monkeyflower Mimulus tilingii var. tilingii Regel Tiling's monkeyflower Mimulus washingtonensis Gandog. Washington monkeyflower Nuttallanthus canadensis (L.) D.A. Sutton Canada toadflax Nuttallanthus texanus (Scheele) D.A. Sutton Texas toadflax Orthocarpus luteus Nutt. yellow owlclover Orthocarpus tolmiei Hook. & Arn. Tolmie's owlclover Pedicularis bracteosa Benth. bracted lousewort Pedicularis bracteosa var. paysoniana (Pennell) Cronq. Payson's 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 crenulata Benth. meadow lousewort Pedicularis cystopteridifolia Rydb. fernleaved pedicularis Pedicularis grayi A. Nels. = Pedicularis procera Pedicularis groenlandica Retz. elephanthead lousewort Pedicularis oederi Vahl ex Hornem. Oeder's lousewort Pedicularis parryi Gray Parry's lousewort Pedicularis parryi ssp. mogollonica (Greene) G.D. Carr Mogollon lousewort Pedicularis parryi ssp. parryi Gray Parry's lousewort Pedicularis parryi ssp. purpurea (Parry) G.D. Carr Rocky Mountain lousewort Pedicularis procera Gray giant lousewort Pedicularis pulchella Pennell mountain lousewort Pedicularis racemosa Dougl. ex Benth. sickletop lousewort Pedicularis racemosa ssp. alba Pennell sickletop lousewort Penstemon absarokensis Evert Absaroka Range beardtongue Penstemon acaulis L.O. Williams stemless beardtongue Penstemon albidus Nutt. white penstemon Penstemon angustifolius Nutt. ex Pursh broadbeard beardtongue Penstemon angustifolius var. angustifolius Nutt. ex Pursh broadbeard beardtongue Penstemon angustifolius var. caudatus (Heller) Rydb. broadbeard beardtongue Penstemon arenicola A. Nels. sand penstemon Penstemon aridus Rydb. stiffleaf penstemon Penstemon attenuatus Dougl. ex Lindl. sulphur penstemon Penstemon attenuatus var. pseudoprocerus (Rydb.) Cronq. small penstemon Penstemon caespitosus Nutt. ex Gray mat penstemon Penstemon caespitosus var. caespitosus Nutt. ex Gray mat penstemon Penstemon caryi Pennell Cary's beardtongue Penstemon cyananthus Hook. Wasatch beardtongue Penstemon cyaneus Pennell blue penstemon Penstemon cyathophorus Rydb. sagebrush beardtongue Penstemon deustus Dougl. ex Lindl. scabland penstemon Penstemon deustus var. deustus Dougl. ex Lindl. hotrock beardtongue Penstemon eriantherus Pursh fuzzytongue penstemon Penstemon eriantherus var. cleburnei (M.E. Jones) Dorn Cleburn's penstemon Penstemon eriantherus var. eriantherus Pursh fuzzytongue penstemon Penstemon fremontii Torr. & Gray ex Gray Fremont's beardtongue Penstemon fremontii var. fremontii Torr. & Gray ex Gray Fremont's penstemon Penstemon fruticosus (Pursh) Greene bush penstemon Penstemon fruticosus var. fruticosus (Pursh) Greene shrubby penstemon Penstemon gibbensii Dorn Gibbens' beardtongue Penstemon glaber Pursh sawsepal penstemon Penstemon glaber var. alpinus (Torr.) Gray alpine western penstemon Penstemon glaber var. glaber Pursh western smooth beardtongue Penstemon gracilis Nutt. lilac penstemon Penstemon grandiflorus Nutt. large beardtongue Penstemon humilis Nutt. ex Gray low penstemon Penstemon humilis ssp. humilis Nutt. ex Gray low beardtongue Penstemon laricifolius Hook. & Arn. larchleaf beardtongue Penstemon laricifolius ssp. exilifolius (A. Nels.) Keck larchleaf beardtongue Penstemon laricifolius ssp. laricifolius Hook. & Arn. larchleaf beardtongue Penstemon montanus Greene mountain penstemon Penstemon montanus var. montanus Greene cordroot beardtongue Penstemon nitidus Dougl. ex Benth. waxleaf penstemon Penstemon nitidus var. nitidus Dougl. ex Benth. waxleaf penstemon Penstemon pachyphyllus Gray ex Rydb. thickleaf beardtongue Penstemon pachyphyllus var. mucronatus (N. Holmgren) Neese mucronate penstemon Penstemon paysoniorum Keck Payson's 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 saxosorum Pennell upland beardtongue Penstemon secundiflorus Benth. sidebells penstemon Penstemon strictus Benth. Rocky Mountain penstemon Penstemon subglaber Rydb. smooth penstemon Penstemon unilateralis Rydb. oneside penstemon Penstemon virens Pennell ex Rydb. Front Range beardtongue Penstemon virgatus Gray upright blue beardtongue Penstemon watsonii Gray Watson's penstemon Penstemon whippleanus Gray Whipple's penstemon Scrophularia lanceolata Pursh lanceleaf figwort Synthyris pinnatifida S. Wats. featherleaf kittenstails Synthyris pinnatifida var. pinnatifida S. Wats. featherleaf kittenstails 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 peregrina ssp. xalapensis (Kunth) Pennell hairy purslane speedwell Veronica persica Poir. birdeye speedwell Veronica scutellata L. skullcap speedwell Veronica serpyllifolia L. thymeleaf speedwell Veronica serpyllifolia ssp. humifusa (Dickson) Syme brightblue speedwell Veronica wormskjoldii Roemer & J.A. Schultes American alpine speedwell SELAGINELLACEAE Selaginella densa Rydb. lesser spikemoss Selaginella mutica D.C. Eat. ex Underwood bluntleaf spikemoss Selaginella mutica var. mutica D.C. Eat. ex Underwood bluntleaf spikemoss Selaginella rupestris (L.) Spring northern selaginella Selaginella selaginoides (L.) Beauv. ex Mart. & Schrank club spikemoss Selaginella underwoodii Hieron. Underwood's spikemoss SMILACACEAE Smilax herbacea L. smooth carrionflower Smilax lasioneura Hook. Blue Ridge carrionflower SOLANACEAE Datura meteloides DC. ex Dunal = Datura wrightii Datura wrightii Regel sacred thornapple 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 heterophylla var. heterophylla Nees clammy groundcherry Physalis hispida (Waterfall) Cronq. prairie groundcherry Physalis longifolia Nutt. longleaf groundcherry Physalis virginiana P. Mill. Virginia groundcherry Solanum americanum P. Mill. American black nightshade Solanum dulcamara L. climbing nightshade Solanum nigrum L. black nightshade Solanum physalifolium Rusby hoe nightshade Solanum rostratum Dunal buffalobur nightshade Solanum triflorum Nutt. cutleaf nightshade TAMARICACEAE Tamarix chinensis Lour. fivestamen tamarisk TYPHACEAE Typha X glauca Godr. (pro sp.) white cattail Typha angustifolia L. narrowleaf cattail Typha latifolia L. broadleaf cattail ULMACEAE Celtis occidentalis L. common hackberry Ulmus americana L. American elm Ulmus pumila L. Siberian elm UMBELLIFERAE Aletes humilis Coult. & Rose Colorado aletes Angelica ampla A. Nels. giant angelica Angelica arguta Nutt. Lyall's angelica Angelica grayi (Coult. & Rose) Coult. & Rose Gray's angelica Angelica lyallii S. Wats. = Angelica arguta Angelica pinnata S. Wats. smallleaf angelica Angelica roseana Henderson rose angelica Berula erecta (Huds.) Coville cutleaf waterparsnip Bupleurum americanum Coult. & Rose American thorow wax Carum carvi L. caraway Cicuta maculata L. spotted water hemlock Cicuta maculata var. angustifolia Hook. spotted water hemlock 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 bulbosus A. Nels. bulbous springparsley Cymopterus evertii Hartman & Kirkpatrick Evert's springparsley Cymopterus lapidosus (M.E. Jones) M.E. Jones talus springparsley Cymopterus longipes S. Wats. longstalk springparsley Cymopterus montanus Nutt. ex Torr. & Gray mountain springparsley Cymopterus nivalis S. Wats. snowline springparsley Cymopterus terebinthinus (Hook.) Torr. & Gray = Pteryxia terebinthina var. terebinthina Cymopterus williamsii Hartman & Constance Williams' springparsley Daucus carota L. Queen Anne's lace Harbouria trachypleura (Gray) Coult. & Rose whiskbroom parsley Heracleum lanatum Michx. = Heracleum maximum Heracleum maximum Bartr. common cowparsnip Heracleum sphondylium L. eltrot Leptotaenia multifida Nutt. = Lomatium dissectum var. multifidum Ligusticum canbyi Coult. & Rose Canby's licoriceroot Ligusticum filicinum S. Wats. fernleaf licoriceroot Ligusticum porteri Coult. & Rose Porter's licoriceroot Ligusticum porteri var. porteri Coult. & Rose Porter's licoriceroot Ligusticum tenuifolium S. Wats. Idaho licoriceroot Lomatium ambiguum (Nutt.) Coult. & Rose Wyeth biscuitroot Lomatium attenuatum Evert tapertip desertparsley Lomatium bicolor (S. Wats.) Coult. & Rose Wasatch desertparsley Lomatium bicolor var. bicolor (S. Wats.) Coult. & Rose Wasatch desertparsley Lomatium bicolor var. leptocarpum (Torr. & Gray) Schlessman Wasatch desertparsley Lomatium cous (S. Wats.) Coult. & Rose cous biscuitroot Lomatium dissectum (Nutt.) Mathias & Constance fernleaf buscuitroot Lomatium dissectum var. multifidum (Nutt.) Mathias & Constance carrotleaf biscuitroot Lomatium foeniculaceum (Nutt.) Coult. & Rose desert biscuitroot Lomatium foeniculaceum ssp. foeniculaceum (Nutt.) Coult. & Rose desert biscuitroot Lomatium graveolens (S. Wats.) Dorn & Hartman king desertparsley Lomatium graveolens var. graveolens (S. Wats.) Dorn & Hartman king desertparsley Lomatium grayi (Coult. & Rose) Coult. & Rose Gray's biscuitroot Lomatium grayi var. grayi (Coult. & Rose) Coult. & Rose Gray's biscuitroot Lomatium juniperinum (M.E. Jones) Coult. & Rose juniper biscuitroot Lomatium macrocarpum (Nutt. ex Torr. & Gray) Coult. & Rose bigseed biscuitroot Lomatium nuttallii (Gray) J.F. Macbr. Nuttall's biscuitroot Lomatium orientale Coult. & Rose Northern Idaho biscuitroot Lomatium simplex (Nutt.) J.F. Macbr. narrowleaf lomatium Lomatium simplex var. simplex (Nutt.) J.F. Macbr. Great Basin desertparsley Lomatium triternatum (Pursh) Coult. & Rose nineleaf biscuitroot Musineon divaricatum (Pursh) Raf. leafy wildparsley Musineon tenuifolium (Nutt. ex Torr. & Gray) Coult. & Rose slender wildparsley Musineon vaginatum Rydb. sheathed wildparsley Oreoxis alpina (Gray) Coult. & Rose alpine oreoxis Oreoxis alpina ssp. alpina (Gray) Coult. & Rose alpine oreoxis 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 Oxypolis fendleri (Gray) Heller Fendler's cowbane Pastinaca sativa L. wild parsnip Pastinaca sativa var. sativa L. wild parsnip Perideridia Reichenb. perideridia Perideridia bolanderi (Gray) A. Nels. & J.F. Macbr. Bolander's yampah Perideridia bolanderi ssp. bolanderi (Gray) A. Nels. & J.F. Macbr. Bolander's yampah Perideridia gairdneri (Hook. & Arn.) Mathias yampa Perideridia gairdneri ssp. borealis Chuang & Constance common yampah Pseudocymopterus Coult. & Rose false springparsley Pseudocymopterus montanus (Gray) Coult. & Rose alpine false springparsley 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. terebinthina (Hook.) Coult. & Rose 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 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 var. holosericea (Nutt.) Jepson = Urtica dioica ssp. holosericea Urtica holosericea Nutt. = Urtica dioica ssp. holosericea Urtica lyallii S. Wats. = Urtica dioica ssp. gracilis VALERIANACEAE Valeriana acutiloba Rydb. sharpleaf valerian Valeriana acutiloba var. 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 VERBENACEAE Glandularia bipinnatifida (Nutt.) Nutt. Dakota mock vervain Glandularia bipinnatifida var. bipinnatifida (Nutt.) Nutt. Dakota mock vervain Phryma leptostachya L. American lopseed Phyla cuneifolia (Torr.) Greene fogfruit Verbena ambrosiifolia Rydb. ex Small = Glandularia bipinnatifida var. bipinnatifida Verbena bipinnatifida Nutt. = Glandularia bipinnatifida var. bipinnatifida Verbena bracteata Lag. & Rodr. bigbract verbena Verbena hastata L. swamp verbena Verbena stricta Vent. hoary verbena VIOLACEAE Viola adunca Sm. hookedspur violet Viola canadensis L. Canadian white violet Viola macloskeyi Lloyd small white violet Viola macloskeyi ssp. pallens (Banks ex DC.) M.S. Baker smooth white violet Viola nuttallii Pursh Nuttall's violet Viola orbiculata Geyer ex Holz. darkwoods violet Viola palustris L. marsh violet Viola pedatifida G. Don prairie violet Viola praemorsa Dougl. ex Lindl. canary violet Viola pubescens Ait. downy 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 tricolor L. johnny jumpup Viola utahensis M.S. Baker & J.C. Clausen ex Baker Utah violet Viola vallicola A. Nels. valley violet VISCACEAE Arceuthobium americanum Nutt. ex Engelm. American dwarf mistletoe Arceuthobium cyanocarpum (A. Nels. ex Rydb.) A. Nels. limber pine dwarf mistletoe Arceuthobium douglasii Engelm. Douglas fir 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