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2940 Plants Found

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Scientific Name	Common Name	†	Map‡
Epilobium lactiflorum Hausskn.	Milkflower Willowherb
Polygonum polygaloides Wall. ex Meisn.	Milkwort Knotweed
Claytonia perfoliata Donn ex Willd.	miner's lettuce
Botrychium minganense Victorin	Mingan Moonwort
Navarretia capillaris (Kellogg) Kuntze	miniature gilia
Lupinus bicolor Lindl.	miniature lupine
Solidago missouriensis Nutt.	Missouri goldenrod
Cucurbita foetidissima Kunth	Missouri Gourd
Huperzia miyoshiana (Makino) Ching	Miyoshi's clubmoss
Gilia modocensis Eastw.	Modoc gilia
Crepis modocensis Greene	Modoc hawksbeard
Rorippa tenerrima Greene	Modoc yellowcress
Brickellia oblongifolia Nutt.	Mojave brickellbush
Suaeda nigra (Raf.) J.F.Macbr.	Mojave Seablite
Euphorbia lathyris L.	moleplant
Lunaria annua L.	Money Plant	✓
Elymus albicans (Scribn. & J.G. Sm.) Á. Löve	Montana wheatgrass
Tragopogon miscellus Ownbey	Moscow salsify
Silene acaulis (L.) Jacq.	moss campion
Coleanthus subtilis (Tratt.) Seidel	Mossgrass
Pectocarya setosa A. Gray	moth combseed
Verbascum blattaria L.	Moth Mullein
Agrostis variabilis Rydb.	mountain bentgrass
Sisyrinchium sarmentosum Suksd. ex Greene	Mountain Blue-Eyed Grass
Bromus marginatus Nees ex Steud.	Mountain Brome
Anticlea elegans (Pursh) Rydb.	Mountain Deathcamas
Cuscuta suksdorfii Yunck.	Mountain Dodder
Thermopsis montana Nutt.	Mountain Goldenbanner
Vahlodea atropurpurea (Wahlenb.) Fr. ex Hartm.	mountain hairgrass
Tsuga mertensiana (Bong.) Carrière	Mountain Hemlock
Castilleja parviflora Bong.	mountain Indian paintbrush
Cypripedium montanum Douglas ex Lindl.	Mountain Lady's Slipper
Hippuris montana Ledeb.	mountain mare's-tail
Monardella odoratissima Benth.	mountain monardella
Botrychium montanum W.H. Wagner	mountain moonwort
Phlox austromontana Coville	mountain phlox
Festuca campestris Rydb.	Mountain Rough Fescue
Carex scopulorum T. Holm	mountain sedge
Symphoricarpos oreophilus A. Gray	mountain snowberry
Descurainia incana (Bernh. ex Fisch. & C.A. Mey.) Dorn	Mountain Tansymustard
Madia glomerata Hook.	mountain tarweed
Salix eastwoodiae Cockerell ex A. Heller	mountain willow
Castilleja crista-galli Rydb.	Mountainside Indian Paintbrush
Hordeum murinum L.	mouse barley
Arabidopsis thaliana (L.) Heynh.	mouseear cress
Hieracium pilosella L.	mouseear hawkweed
Polemonium californicum Eastw.	moving polemonium
Lupinus alpicola L.F. Hend. ex Piper	Mt. Adams Lupine
Solidago simplex Kunth	Mt. Albert goldenrod
Calyptridium umbellatum (Torr.)	Mt. Hood Pussypaws
Pedicularis rainierensis Pennell & Warren	Mt. Rainier lousewort
Carex limosa L.	mud sedge
Zeltnera muehlenbergii (Griseb.) G.Mans.	Muhlenberg's Centaury
Wyethia amplexicaulis (Nutt.) Nutt.	mule-ears
Sphaeralcea munroana (Douglas) Spach	Munro's globemallow
Malva moschata L.	Musk Mallow
Mimulus moschatus Douglas ex Lindl.	muskflower
Erodium moschatum (L.) L'Hér. ex Aiton	musky stork's bill
Poa fendleriana (Steud.) Vasey	muttongrass
Euphorbia myrsinites L.	myrtle spurge
Eriogonum nudum Douglas ex Benth.	naked buckwheat
Mitella nuda L.	naked miterwort
Carex nudata W. Boott	naked sedge
Crepis pleurocarpa A. Gray	nakedstem hawksbeard
Prunus tomentosa Thunb.	Nanking cherry
Callitriche stenoptera Lansdown	Narrow-Wing Water-Starwort
Leptosiphon liniflorus (Benth.) J.M. Porter & L.A. Johnson	Narrowflower Flaxflower
Sparganium angustifolium Michx.	narrowleaf bur-reed
Typha angustifolia L.	narrowleaf cattail
Melampyrum lineare Desr.	narrowleaf cowwheat
Rumex stenophyllus Ledeb.	narrowleaf dock
Chenopodium leptophyllum (Moq.) Nutt. ex S. Watson	Narrowleaf Goosefoot
Botrychium lineare W.H. Wagner	narrowleaf grapefern
Crepis tectorum L.	narrowleaf hawksbeard
Montia linearis (Douglas ex Hook.) Greene	narrowleaf minerslettuce
Nestotus stenophyllus (A. Gray) R.P. Roberts, Urbatsch & Neubig	Narrowleaf Mock Goldenweed
Allium amplectens Hook.	narrowleaf onion
Oxytheca dendroidea Nutt.	Narrowleaf Oxytheca
Plantago lanceolata L.	Narrowleaf Plantain
Antennaria stenophylla (A. Gray) A. Gray	narrowleaf pussytoes
Scutellaria angustifolia Pursh	narrowleaf skullcap
Lithospermum incisum Lehm.	narrowleaf stoneseed
Polystichum imbricans (D.C. Eaton) D.H. Wagner	narrowleaf swordfern
Lotus tenuis Waldst. & Kit. ex Willd.	narrowleaf trefoil
Alisma gramineum Lej.	narrowleaf water plantain
Salix exigua Nutt.	narrowleaf willow
Juncus brevicaudatus (Engelm.) Fernald	narrowpanicle rush
Phacelia leptosepala Rydb.	narrowsepal phacelia
Cryptantha gracilis Osterh.	narrowstem cryptantha
Carex vernacula L.H. Bailey	Native Sedge
Erigeron concinnus (Hook. & Arn.) Torr. & A. Gray	Navajo fleabane
Carex nebrascensis Dewey	Nebraska sedge
Veronica peregrina L.	neckweed
Eleocharis acicularis (L.) Roem. & Schult.	needle spikerush
Hesperostipa comata (Trin. & Rupr.) Barkworth	Needle-and-Thread Grass
Navarretia intertexta (Benth.) Hook.	Needleleaf Navarretia
Carex duriuscula C.A. Mey.	needleleaf sedge
Celtis reticulata	Netleaf Hackberry
Agastache urticifolia (Benth.) Kuntze	nettleleaf giant hyssop
Arnica nevadensis A. Gray	Nevada arnica
Lomatium nevadense (S. Watson) J.M. Coult. & Rose	Nevada biscuitroot
Scirpus nevadensis S. Watson	Nevada bulrush
Lewisia nevadensis (A. Gray) B.L. Rob.	Nevada lewisia
Eriocoma nevadensis (B.L.Johnson) Romasch.	Nevada Needlegrass
Lathyrus lanszwertii Kellogg	Nevada pea
Juncus tiehmii Ertter	Nevada rush
Allium nevii S. Watson	Nevius' Garlic
Symphyotrichum novae-angliae (L.) G.L. Nesom	New England Aster	✓
Potentilla newberryi A. Gray	Newberry's cinquefoil
Calystegia atriplicifolia Hallier f.	Nightblooming False Bindweed
Silene noctiflora L.	nightflowering silene
Lomatium triternatum (Pursh) J.M. Coult. & Rose	nineleaf biscuitroot
Abies procera Rehder	Noble Fir
Bidens cernua L.	Nodding Beggartick
Eriogonum cernuum Nutt.	nodding buckwheat
Cerastium nutans Raf.	nodding chickweed
Oxytropis deflexa (Pall.) DC.	nodding locoweed
Microseris nutans (Hook.) Sch. Bip.	nodding microseris
Allium cernuum Roth	Nodding Onion
Carduus nutans L.	nodding plumeless thistle
Pleuropogon refractus (A. Gray) Benth. ex Vasey	nodding semaphoregrass
Hackelia deflexa (Wahlenb.) Opiz	nodding stickseed
Najas flexilis (Willd.) Rostk. & Schmidt	Nodding Waternymph
Rosa nutkana C. Presl	Nootka Rose
Ventenata dubia (Leers) Coss.	North Africa grass
Mimulus clivicola Greenm.	North Idaho monkeyflower
Ophioglossum pusillum Raf.	northern adderstongue
Galium boreale L.	northern bedstraw
Agrostis mertensii Trin.	northern bentgrass
Lomatium farinosum (Hook.) J.M. Coult. & Rose	Northern Biscuitroot
Ribes hudsonianum Richardson	Northern Black Currant
Sisyrinchium septentrionale E.P. Bicknell	northern blue-eyed grass
Poa stenantha Trin.	northern bluegrass
Symphyotrichum boreale (Torr. & A. Gray) Á. Löve & D. Löve	northern bog aster
Carex gynocrates Wormsk. ex Drejer	northern bog sedge
Viola nephrophylla Greene	northern bog violet
Lycopus uniflorus Michx.	Northern Bugleweed
Juglans hindsii (Jeps.) Jeps. ex R.E. Sm.	Northern California walnut
Carex arcta Boott	northern cluster sedge
Bolandra oregana S. Watson	northern false coolwort
Chrysosplenium tetrandrum (Lund ex Malmgr.) Th. Fr.	Northern Golden Saxifrage
Platanthera aquilonis Sheviak	northern green orchid
Juncus alpinoarticulatus Chaix	northern green rush
Polystichum lonchitis (L.) Roth	northern hollyfern
Ligusticum verticillatum (Hook.) J.M. Coult. & Rose ex Rose	northern licorice-root
Leptosiphon septentrionalis (H. Mason) J.M. Porter & L.A. Johnson	northern linanthus
Microseris borealis (Bong.) Sch. Bip.	northern microseris
Botrychium pinnatum H. St. John	northern moonwort
Elymus hirsutus J. Presl	northern ryegrass
Sanicula graveolens Poepp. ex DC.	northern sanicle
Carex scirpoidea Michx.	northern singlespike sedge
Stellaria calycantha (Ledeb.) Bong.	northern starwort
Hierochloe hirta (Schrank) Borbás	Northern Sweetgrass
Alisma triviale Pursh	Northern Water Plantain
Callitriche hermaphroditica L.	northern water-starwort
Wolffia borealis (Engelm. ex Hegelm.) Landolt ex Landolt & Wildi	northern watermeal
Zizania palustris L.	Northern Wildrice
Viola septentrionalis Greene	Northern Woodland Violet
Salix sessilifolia Nutt.	northwest sandbar willow
Carex utriculata Boott	Northwest Territory sedge
Packera contermina (Greenm.) J.F. Bain	Northwestern Groundsel
Castilleja angustifolia (Nutt.) G. Don	northwestern Indian paintbrush
Carex concinnoides Mack.	northwestern sedge
Sclerolinon digynum (A. Gray) C.M. Rogers	northwestern yellowflax
Acer platanoides L.	Norway Maple	✓
Potentilla norvegica L.	Norwegian cinquefoil
Scutellaria antirrhinoides Benth.	nose skullcap
Trifolium bifidum A. Gray	notchleaf clover
Puccinellia nuttalliana (Schult.) Hitchc.	Nuttall's Alkaligrass
Tiquilia nuttallii (Hook.) A.T. Richardson	Nuttall's crinklemat
Leptosiphon nuttallii (A. Gray) J.M. Porter & L.A. Johnson	Nuttall's Linanthus
Blitum nuttallianum Schult.	Nuttall's Povertyweed
Isoetes nuttallii A. Braun ex Engelm.	Nuttall's Quillwort
Arabis nuttallii B.L. Rob.	Nuttall's rockcress
Minuartia nuttallii (Pax) Briq.	Nuttall's sandwort
Helianthus nuttallii Torr. & A. Gray	Nuttall's Sunflower
Cardamine nuttallii Greene	Nuttall's toothwort
Datura quercifolia Kunth	Oak-Leaved Thorn-Apple
Trichostema oblongum Benth.	oblong bluecurls
Mertensia oblongifolia (Nutt.) G. Don	oblongleaf bluebells
Atriplex oblongifolia Waldst. & Kit.	oblongleaf orache
Ranunculus triternatus A. Gray	Obscure Buttercup
Castilleja cryptantha Pennell & G.N. Jones	obscure Indian paintbrush
Holodiscus discolor (Pursh) Maxim.	oceanspray
Phemeranthus sediformis (Poelln.) Kiger	Okanogan Fameflower
Hackelia ciliata (Douglas ex Lehm.) I.M. Johnst.	Okanogan stickseed
Geum triflorum Pursh	Old Man's Whiskers
Idahoa scapigera (Hook.) A. Nelson & J.F. Macbr.	oldstem idahoa
Delphinium glareosum Greene	Olympic larkspur
Allium crenulatum Wiegand	Olympic Onion
Lycopodium lagopus (Laest. ex Hartm.) Zinserl. ex Kuzen	one-cone clubmoss
Salix monochroma C.R. Ball	onecolor willow
Gentianopsis simplex (A. Gray) Iltis	Oneflower Fringed Gentian
Helianthella uniflora (Nutt.) Torr. & A. Gray	oneflower helianthella
Orobanche uniflora L.	oneflowered broomrape
Nasturtium microphyllum Boenn. ex Rchb.	onerow yellowcress
Crataegus monogyna Jacq.	oneseed hawthorn
Danthonia unispicata (Thurb.) Munro ex Macoun	onespike danthonia
Melica bulbosa Geyer ex Porter & J.M. Coult.	oniongrass
Lobelia kalmii L.	Ontario lobelia
Dichelostemma congestum (Sm.) Kunth	ookow
Lupinus vallicola A. Heller	open lupine
Papaver somniferum L.	opium poppy
Hemizonella minima (A. Gray) A. Gray	opposite-leaved tarweed
Agoseris aurantiaca (Hook.) Greene	orange agoseris
Hemerocallis fulva (L.) L.	orange daylily
Buddleja davidii Franch.	orange eye butterflybush
Lonicera ciliosa (Pursh) Poir. ex DC.	Orange Honeysuckle
Verbascum phlomoides L.	orange mullein
Dactylis glomerata L.	Orchard Grass
Bromus orcuttianus Vasey	Orcutt's Brome
Origanum vulgare L.	Oregano
Fraxinus latifolia Benth.	Oregon Ash
Galium oreganum Britton	Oregon Bedstraw
Agrostis oregonensis Vasey	Oregon bentgrass
Paxistima myrsinites (Pursh) Raf.	Oregon boxleaf
Sidalcea oregana (Nutt. ex Torr. & A. Gray) A. Gray	Oregon checkerbloom
Woodsia oregana D.C. Eaton	Oregon cliff fern
Sullivantia oregana S. Watson	Oregon Coolwort
Malus fusca (Raf.) C.K. Schneid.	Oregon crab apple
Heterotheca oregona (Nutt.) Shinners	Oregon false goldenaster
Geranium oreganum Howell	Oregon geranium
Coptis laciniata A. Gray	Oregon goldthread
Berberis aquifolium Pursh	Oregon Grape
Micranthes oregana (Howell) Small	Oregon Saxifrage
Silene oregana S. Watson	Oregon silene
Sedum oreganum Nutt.	Oregon stonecrop
Physaria oregona S. Watson	Oregon Twinpod
Quercus garryana Douglas ex Hook.	Oregon White Oak
Sericocarpus oregonensis Nutt.	Oregon Whitetop Aster
Epilobium oregonense Hausskn.	Oregon willowherb
Psilocarphus oregonus Nutt.	Oregon woollyheads
Papaver orientale L.	Oriental poppy
Clematis orientalis L.	Oriental virginsbower
Impatiens glandulifera Royle	ornamental jewelweed
Lupinus ornatus Douglas ex Lindl.	ornate lupine
Sedum debile S. Watson	Orpine Stonecrop
Maclura pomifera (Raf.) C.K. Schneid.	Osage-orange	✓
Vaccinium ovalifolium Sm.	Oval-leaf Blueberry
Limosella acaulis Sessé & Moc.	Owyhee mudwort
Leucanthemum vulgare Lam.	oxeye daisy
Anemone multifida Poir.	Pacific Anemone
Symphyotrichum chilense (Nees) G.L. Nesom	Pacific aster
Sanicula crassicaulis Poepp. ex DC.	Pacific blacksnakeroot
Dicentra formosa (Haw.) Walp.	Pacific bleeding heart
Corallorhiza mertensiana Bong.	Pacific coralroot
Cornus nuttallii Audubon ex Torr. & A. Gray	Pacific Dogwood
Alopecurus saccatus Vasey	Pacific foxtail
Cynoglossum grande Douglas ex Lehm.	Pacific hound's tongue
Azolla filiculoides Lam.	Pacific mosquitofern
Physocarpus capitatus (Pursh) Kuntze	Pacific ninebark
Gymnocarpium disjunctum (Rupr.) Ching	Pacific oakfern
Allium validum S. Watson	Pacific onion
Toxicodendron diversilobum (Torr. & A. Gray) Greene	Pacific poison oak
Plagiobothrys tenellus (Nutt. ex Hook.) A. Gray	Pacific popcornflower
Abies amabilis (Douglas ex Loudon) Douglas ex Forbes	Pacific Silver Fir
Lysimachia latifolia (Hook.) Cholewa	Pacific Starflower
Sedum divergens S. Watson	Pacific stonecrop
Trillium ovatum Pursh	Pacific trillium
Marsilea oligospora Goodding	Pacific waterclover
Hydrophyllum tenuipes A. Heller	Pacific Waterleaf
Luzula comosa E. Mey.	Pacific woodrush
Taxus brevifolia Nutt.	Pacific Yew
Chylismia scapoidea (Torr. & A.Gray) Small	Paiute suncup
Agoseris glauca (Pursh) Raf.	pale agoseris
Campanula scouleri Hook. ex A. DC.	Pale Bellflower
Corispermum pallidum Mosyakin	pale bugseed
Oenothera pallida Lindl.	pale evening primrose
Torreyochloa pallida (Torr.) Church	Pale False Mannagrass
Linum bienne Mill.	pale flax
Gentiana glauca Pall.	pale gentian
Castilleja pallescens (A. Gray) Greenm.	pale Indian paintbrush
Alyssum alyssoides (L.) L.	pale madwort
Carex pallescens L.	pale sedge
Persicaria lapathifolia (L.) Delarbre	Pale Smartweed
Erysimum occidentale (S. Watson) B.L. Rob.	pale wallflower
Castilleja oresbia Greenm.	Pale Wallowa Indian Paintbrush
Impatiens aurella Rydb.	paleyellow touch-me-not
Asclepias cryptoceras S. Watson	Pallid Milkweed
Silene bernardina S. Watson	Palmer's catchfly
Penstemon palmeri A. Gray	Palmer's Penstemon
Astragalus arrectus A. Gray	Palouse milkvetch
Cirsium brevifolium Nutt.	Palouse thistle
Scirpus microcarpus J. Presl & C. Presl	panicled bulrush
Betula papyrifera Marshall	Paper Birch	✓
Malus pumila Mill.	paradise apple
Myriophyllum aquaticum (Vell.) Verdc.	Parrot Feather Watermilfoil
Castilleja pilosa (S. Watson) Rydb.	Parrothead Indian Paintbrush
Arnica parryi A. Gray	Parry's arnica
Campanula parryi A. Gray	Parry's bellflower
Polygonum parryi Greene	Parry's knotweed
Juncus parryi Engelm.	Parry's rush
Carex parryana Dewey	Parry's sedge
Silene parryi (S. Watson) C.L. Hitchc. & Maguire	Parry's silene
Petroselinum crispum (Mill.) Nyman ex A.W. Hill	Parsley
Eriogonum heracleoides Nutt.	parsnipflower buckwheat
Luetkea pectinata (Pursh) Kuntze	partridgefoot
Astragalus misellus S. Watson	pauper milkvetch
Penstemon payettensis A. Nelson & J.F. Macbr.	Payette Beardtongue
Astragalus paysonii (Rydb.) Barneby	Payson's Milkvetch
Carex paysonis Clokey	Payson's sedge
Prunus persica (L.) Batsch	Peach
Campanula persicifolia L.	peachleaf bellflower
Salix amygdaloides Andersson	peachleaf willow
Antennaria anaphaloides Rydb.	pearly pussytoes
Castilleja peckiana Pennell	Peck's Indian Paintbrush
Botrychium paradoxum W.H. Wagner	peculiar moonwort
Cardamine pensylvanica Muhl. ex Willd.	Pennsylvania bittercress
Ranunculus pensylvanicus L. f.	Pennsylvania buttercup
Parietaria pensylvanica Muhl. ex Willd.	Pennsylvania Pellitory
Mentha ×piperita	Peppermint
Cirsium cymosum (Greene) J.T. Howell	Peregrine Thistle
Centaurea montana L.	perennial cornflower
Lathyrus latifolius L.	perennial pea
Lolium perenne L.	Perennial Ryegrass
Diplotaxis tenuifolia (L.) DC.	perennial wallrocket
Euphorbia peplus L.	petty spurge
Cephalanthera austiniae (A. Gray) A. Heller	Phantom Orchid
Erigeron philadelphicus L.	Philadelphia Fleabane
Cruciata pedemontana (Bellardi) Ehrend.	piedmont bedstraw
Epilobium anagallidifolium Lam.	pimpernel willowherb
Calamagrostis rubescens Buckley	Pinegrass
Arctostaphylos nevadensis A. Gray	Pinemat Manzanita
Cryptantha simulans Greene	pinewoods cryptantha
Horkelia fusca Lindl.	Pinewoods Horkelia
Antennaria geyeri A. Gray	pinewoods pussytoes
Silene repens Patrin ex Pers.	Pink Campion
Phyllodoce empetriformis (Sm.) D. Don	pink mountainheath
Clarkia pulchella Pursh	pinkfairies
Cryptantha scoparia A. Nelson	Pinyon Desert cryptantha
Chenopodium atrovirens Rydb.	pinyon goosefoot
Gayophytum ramosissimum Torr. & A. Gray	pinyon groundsmoke
Viola glabella Nutt.	pioneer violet
Anemone piperi Britton ex Rydb.	Piper's anemone
Erigeron piperianus Cronquist	Piper's fleabane
Luzula piperi (Coville) M.E. Jones	Piper's woodrush
Chimaphila umbellata (L.) W.P.C. Barton	pipsissewa
Chenopodium berlandieri Moq.	Pitseed Goosefoot
Camissonia contorta (Douglas ex Lehm.) Kearney	Plains Evening Primrose
Ranunculus alismifolius Geyer ex Benth.	plantainleaf buttercup
Gentiana affinis Griseb.	pleated gentian
Trifolium plumosum Douglas ex Hook.	plumed clover
Narcissus poeticus L.	poet's narcissus
Dodecatheon poeticum L.F. Hend.	poet's shootingstar
Calochortus apiculatus Baker	pointedtip mariposa lily
Conium maculatum L.	Poison Hemlock	✓
Koenigia phytolaccifolia (Meisn. ex Small) T.M.Schust. & Reveal	Poke Knotweed
Callitriche stagnalis Scop.	pond water-starwort
Pinus ponderosa Lawson & C. Lawson	Ponderosa Pine
Ranunculus populago Greene	popular buttercup
Bromus porteri (J.M. Coult.) Nash	Porter brome
Packera porteri (Greene) C. Jeffrey	Porter's Groundsel
Bromus sterilis L.	poverty brome
Sporobolus vaginiflorus (Torr. ex A. Gray) Alph. Wood	poverty dropseed
Danthonia spicata (L.) P. Beauv. ex Roem. & Schult.	Poverty Oatgrass
Juncus tenuis Willd.	poverty rush
Iva axillaris Pursh	povertyweed
Amaranthus powellii S. Watson	Powell's Amaranth
Atriplex powellii S. Watson	Powell's saltweed
Sanguisorba annua (Nutt. ex Hook.) Nutt. ex Torr. & A. Gray	Prairie Burnet
Spartina pectinata Bosc ex Link	Prairie Cordgrass
Erigeron strigosus Muhl. ex Willd.	Prairie Fleabane
Physalis pumila var. hispida (Waterf.) J.R.Sullivan	Prairie Groundcherry
Koeleria macrantha (Ledeb.) Schult.	Prairie Junegrass
Calamovilfa longifolia (Hook.) Scribn.	Prairie Sandreed
Helianthus petiolaris Nutt.	Prairie Sunflower
Aristida oligantha Michx.	Prairie Threeawn
Sphenopholis obtusata (Michx.) Scribn.	Prairie Wedgescale
Carex preslii Steud.	Presl's sedge
Symphytum asperum Lepechin	prickly comfrey
Ribes lacustre (Pers.) Poir.	prickly currant
Lactuca serriola L.	Prickly Lettuce	✓
Rosa acicularis Lindl.	Prickly Rose
Salsola tragus L.	prickly Russian thistle
Eremogone aculeata (S.Watson) Ikonn.	Prickly Sandwort
Mimulus primuloides Benth.	primrose monkeyflower
Paulownia tomentosa (Thunb.) Siebold & Zucc. ex Steud.	Princess Tree
Panicum miliaceum L.	proso millet
Ceanothus prostratus Benth.	prostrate ceanothus
Hornungia procumbens (L.) Hayek	prostrate hutchinsia
Amaranthus albus L.	Prostrate Pigweed
Sporobolus neglectus Nash	puffsheath dropseed
Muhlenbergia filiformis (Thurb. ex S. Watson) Rydb.	pullup muhly
Tribulus terrestris L.	puncturevine
Geum rivale L.	Purple Avens
Erigeron poliospermus A. Gray	purple cushion fleabane
Lamium purpureum L.	Purple Deadnettle
Digitalis purpurea L.	Purple Foxglove
Lomatium columbianum Mathias & Constance	Purple Leptotaenia
Lythrum salicaria L.	Purple Loosestrife
Comarum palustre L.	purple marshlocks
Thalictrum dasycarpum Fisch. & Avé-Lall.	Purple Meadow-rue
Astragalus agrestis Douglas ex G. Don	purple milkvetch
Mimulus lewisii Pursh	purple monkeyflower
Saxifraga oppositifolia L.	purple mountain saxifrage
Melica spectabilis Scribn.	purple oniongrass
Sarracenia purpurea L.	purple pitcherplant
Dalea purpurea Vent.	purple prairie clover
Calamagrostis purpurascens R. Br.	purple reedgrass
Salvia dorrii (Kellogg) Abrams	purple sage
Sanicula bipinnatifida Douglas ex Hook.	purple sanicle
Eleocharis atropurpurea (Retz.) J. Presl & C. Presl	purple spikerush
Osmorhiza purpurea (J.M. Coult. & Rose) Suksd.	purple sweetroot
Aristida purpurea Nutt.	Purple Threeawn
Linaria purpurea (L.) Mill.	purple toadflax
Lepidium heterophyllum Benth.	purpleanther field pepperweed
Lonicera conjugialis Kellogg	purpleflower honeysuckle
Suaeda calceoliformis (Hook.) Moq.	Pursh Seepweed
Ranunculus pygmaeus Wahlenb.	Pygmy Buttercup
Androsace septentrionalis L.	pygmyflower rockjasmine
Elymus repens (L.) Gould	Quackgrass
Populus tremuloides Michx.	Quaking Aspen
Daucus carota L.	Queen Anne's lace
Hieracium glomeratum Froel.	queen-devil hawkweed
Thelypteris quelpaertensis (Christ) Ching	queen's-veil maiden fern
Galinsoga quadriradiata Cav.	Quickweed
Cryptantha affinis (A. Gray) Greene	quill cryptantha
Carex tenera Dewey	quill sedge
Ericameria bloomeri (A. Gray) J.F. Macbr.	rabbitbush
Trifolium arvense L.	Rabbitfoot Clover
Antennaria racemosa Hook.	raceme pussytoes
Draba ruaxes Payson & H. St. John	Rainier draba
Gentiana calycosa Griseb.	Rainier pleated gentian
Viola trinervata (Howell) Howell ex A. Gray	Rainier violet
Proboscidea louisianica (Mill.) Thell.	Ram's Horn
Guizotia abyssinica (L. f.) Cass.	ramtilla
Trifolium albopurpureum Torr. & A. Gray	rancheria clover
Scheuchzeria palustris L.	rannoch-rush
Brassica napus L.	rape
Heterocodon rariflorum Nutt.	rareflower heterocodon
Phacelia rattanii A. Gray	Rattan's phacelia
Bromus briziformis Fisch. & C.A. Mey.	rattlesnake brome
Botrychium virginianum (L.) Sw.	Rattlesnake Fern
Saccharum ravennae (L.) L.	ravennagrass
Symphyotrichum ciliatum (Ledeb.) G.L. Nesom	Rayless Alkali Aster
Arnica discoidea Benth.	rayless arnica
Carex raynoldsii Dewey	Raynolds' sedge
Alnus rubra Bong.	Red Alder
Amaranthus cruentus L.	red amaranth
Actaea rubra (Aiton) Willd.	Red Baneberry
Besseya rubra (Douglas ex Hook.) Rydb.	red besseya
Silene dioica (L.) Clairville	red catchfly
Trifolium pratense L.	Red Clover
Ribes triste Pall.	red currant
Sambucus racemosa L.	Red Elderberry
Festuca rubra L.	Red Fescue
Oxybasis rubra (L.) S.Fuentes, Uotila & Borsch	Red Goosefoot
Vaccinium parvifolium Sm.	red huckleberry
Spergularia rubra (L.) J. Presl & C. Presl	Red Sandspurry
Centaurea calcitrapa L.	red star-thistle
Salicornia rubra A. Nelson	red swampfire
Centranthus ruber (L.) DC.	red valerian
Cornus sericea L.	Red-Osier Dogwood
Ribes sanguineum Pursh	redflower currant
Amaranthus retroflexus L.	redroot amaranth
Cyperus erythrorhizos Muhl.	redroot flatsedge
Oenothera glazioviana Micheli	redsepal evening primrose
Ceanothus sanguineus Pursh	redstem ceanothus
Claytonia rubra (Howell) Tidestr.	redstem springbeauty
Erodium cicutarium (L.) L'Hér. ex Aiton	Redstem Stork's Bill	✓
Agrostis gigantea Roth	Redtop
Plantago eriopoda Torr.	redwool plantain
Phalaris arundinacea L.	Reed Canary Grass
Juncus regelii Buchenau	Regel's rush
Tragopogon mirus Ownbey	remarkable goatsbeard
Bromus catharticus Vahl	rescuegrass
Betula glandulosa Michx.	Resin Birch
Trifolium resupinatum L.	reversed clover
Potamogeton epihydrus Raf.	ribbonleaf pondweed
Leersia oryzoides (L.) Sw.	rice cutgrass
Geranium richardsonii Fisch. & Trautv.	Richardson's geranium
Achnatherum richardsonii (Link) Barkworth	Richardson's needlegrass
Potamogeton richardsonii (Benn.) Rydb.	Richardson's pondweed
Penstemon triphyllus Douglas ex Lindl.	Riggin's Penstemon
Bromus diandrus Roth	ripgut brome
Bolboschoenus fluviatilis (Torr.) Soják	River Bulrush
Vitis riparia Michx.	Riverbank Grape
Acmispon denticulatus (Drew) D.D.Sokoloff	Riverbar Bird's-Foot Trefoil
Lepidium ruderale L.	roadside pepperweed
Astragalus robbinsii (Oakes) A. Gray	Robbins' milkvetch
Potamogeton robbinsii Oakes	Robbins' Pondweed
Geranium robertianum L.	Robert geranium
Allium robinsonii L.F. Hend.	Robinson's onion
Eriogonum sphaerocephalum Douglas ex Benth.	rock buckwheat
Clematis columbiana (Nutt.) Torr. & A. Gray	rock clematis
Lupinus saxosus Howell	rock lupine
Allium macrum S. Watson	rock onion
Carex saxatilis L.	rock sedge
Saponaria ocymoides L.	rock soapwort
Salix vestita Pursh	rock willow
Holodiscus dumosus (Nutt. ex Hook.) A. Heller	Rockspirea
Penstemon elegantulus Pennell	Rockvine Penstemon
Penstemon ellipticus J.M. Coult. & Fisher	rocky ledge penstemon
Ionactis stenomeres (A. Gray) Greene	Rocky Mountain aster
Cleomella serrulata (Pursh) Roalson & J.C.Hall	Rocky Mountain Beeplant
Schoenoplectiella saximontana (Fernald) Lye	Rocky Mountain bulrush
Stellaria obtusa Engelm.	Rocky Mountain chickweed
Festuca saximontana Rydb.	Rocky Mountain fescue
Solidago multiradiata Aiton	Rocky Mountain goldenrod
Packera streptanthifolia (Greene) W.A. Weber & Á. Löve	Rocky Mountain Groundsel

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