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3759 Plants Found

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Ordered by common name.

Scientific Name	Common Name	†	Map‡
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
Draba carnosula O.E. Schulz	Mt. Eddy Draba
Lupinus lapidicola A. Heller	Mt. Eddy Lupine
Actaea laciniata (S. Watson) J. Compton	Mt. Hood Bugbane
Calyptridium umbellatum (Torr.)	Mt. Hood Pussypaws
Clarkia lassenensis (Eastw.) F.H. Lewis & M.E. Lewis	Mt. Lassen Clarkia
Draba aureola S. Watson	Mt. Lassen draba
Erigeron lassenianus Greene	Mt. Lassen Fleabane
Collomia mazama Coville	Mt. Mazama Collomia
Pedicularis rainierensis Pennell & Warren	Mt. Rainier lousewort
Arnica viscosa A. Gray	Mt. Shasta Arnica
Carex limosa L.	mud sedge
Zeltnera muehlenbergii (Griseb.) G.Mans.	Muhlenberg's Centaury
Wyethia amplexicaulis (Nutt.) Nutt.	mule-ears
Rosa multiflora Thunb.	Multiflora Rose
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
Calochortus nudus S. Watson	naked mariposa lily
Carex nudata W. Boott	naked sedge
Crepis pleurocarpa A. Gray	nakedstem hawksbeard
Prunus tomentosa Thunb.	Nanking cherry
Piperia leptopetala Rydb.	narrow-petal rein orchid
Leptosiphon liniflorus (Benth.) J.M. Porter & L.A. Johnson	Narrowflower Flaxflower
Lupinus angustiflorus Eastw.	Narrowflower Lupine
Carex specifica L.H. Bailey	narrowfruit sedge
Collinsia linearis A. Gray	Narrowleaf Blue Eyed Mary
Sparganium angustifolium Michx.	narrowleaf bur-reed
Typha angustifolia L.	narrowleaf cattail
Logfia gallica (L.) Coss. & Germ.	narrowleaf cottonrose
Trifolium angustifolium L.	narrowleaf crimson clover
Rumex stenophyllus Ledeb.	narrowleaf dock
Chenopodium leptophyllum (Moq.) Nutt. ex S. Watson	Narrowleaf Goosefoot
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
Chlorogalum angustifolium Kellogg	narrowleaf soap plant
Polystichum imbricans (D.C. Eaton) D.H. Wagner	narrowleaf swordfern
Bupleurum odontites L.	Narrowleaf Thorow Wax
Lotus tenuis Waldst. & Kit. ex Willd.	narrowleaf trefoil
Alisma gramineum Lej.	narrowleaf water plantain
Salix exigua Nutt.	narrowleaf willow
Perideridia leptocarpa T.I. Chuang & Constance	Narrowseed Yampah
Phacelia leptosepala Rydb.	narrowsepal phacelia
Cryptantha gracilis Osterh.	narrowstem cryptantha
Carex vernacula L.H. Bailey	Native Sedge
Carex nebrascensis Dewey	Nebraska sedge
Carex projecta Mack.	necklace 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
Sidalcea nelsoniana Piper	Nelson's checkerbloom
Polypodium calirhiza S. Whitmore & A.R. Sm.	nested polypody
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
Sisyrinchium halophilum Greene	Nevada Blue-Eyed Grass
Scirpus nevadensis S. Watson	Nevada bulrush
Eriogonum prattenianum Durand	Nevada City Buckwheat
Gilia brecciarum M.E. Jones	Nevada gilia
Solidago spectabilis (D.C. Eaton) A. Gray	Nevada Goldenrod
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
Astragalus newberryi A. Gray	Newberry's Milkvetch
Calystegia atriplicifolia Hallier f.	Nightblooming False Bindweed
Silene noctiflora L.	nightflowering silene
Lomatium triternatum (Pursh) J.M. Coult. & Rose	nineleaf biscuitroot
Gastridium phleoides (Nees & Meyen) C.E. Hubbard	nit grass
Abies procera Rehder	Noble Fir
Bidens cernua L.	Nodding Beggartick
Cerastium nutans Raf.	nodding chickweed
Trifolium cernuum Brot.	Nodding Clover
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
Thelypodium flexuosum B.L. Rob.	Nodding Thelypody
Najas flexilis (Willd.) Rostk. & Schmidt	Nodding Waternymph
Rosa nutkana C. Presl	Nootka Rose
Ventenata dubia (Leers) Coss.	North Africa grass
Kalmiopsis fragrans Meinke & Kaye	North Umpqua Kalmiopsis
Ophioglossum pusillum Raf.	northern adderstongue
Galium boreale L.	northern bedstraw
Lomatium farinosum (Hook.) J.M. Coult. & Rose	Northern Biscuitroot
Ribes hudsonianum Richardson	Northern Black Currant
Poa stenantha Trin.	northern bluegrass
Symphyotrichum boreale (Torr. & A. Gray) Á. Löve & D. Löve	northern bog aster
Viola nephrophylla Greene	northern bog violet
Lycopus uniflorus Michx.	Northern Bugleweed
Juglans hindsii (Jeps.) Jeps. ex R.E. Sm.	Northern California walnut
Clarkia borealis E. Small	Northern Clarkia
Carex arcta Boott	northern cluster sedge
Bolandra oregana S. Watson	northern false coolwort
Juncus alpinoarticulatus Chaix	northern green rush
Polystichum lonchitis (L.) Roth	northern hollyfern
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
Phlox adsurgens Torr. ex A. Gray	Northern Phlox
Quercus rubra L.	Northern Red Oak	✓
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
Salix sessilifolia Nutt.	northwest sandbar willow
Carex utriculata Boott	Northwest Territory sedge
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	✓
Picea abies (L.) Karst.	Norway Spruce	✓
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
Minuartia nuttallii (Pax) Briq.	Nuttall's sandwort
Helianthus nuttallii Torr. & A. Gray	Nuttall's Sunflower
Cardamine nuttallii Greene	Nuttall's toothwort
Phoradendron leucarpum (Raf.) Reveal & M.C. Johnst.	Oak Mistletoe
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
Sedum oblanceolatum R.T. Clausen	Oblongleaf Stonecrop
Ranunculus triternatus A. Gray	Obscure Buttercup
Castilleja cryptantha Pennell & G.N. Jones	obscure Indian paintbrush
Holodiscus discolor (Pursh) Maxim.	oceanspray
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
Carex gynodynama Olney	Olney's hairy sedge
Campanula piperi Howell	Olympic bellflower
Delphinium glareosum Greene	Olympic larkspur
Allium crenulatum Wiegand	Olympic Onion
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
Calyptridium paniculatum (Kellogg) Greene	Oneseed Pussypaws
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
Lewisia oppositifolia (S. Watson) B.L. Rob.	Oppositeleaf Lewisia
Agoseris aurantiaca (Hook.) Greene	orange agoseris
Cotoneaster franchetii Boiss.	orange cotoneaster
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
Isoetes orcuttii A.A. Eaton	Orcutt's quillwort
Origanum vulgare L.	Oregano
Fraxinus latifolia Benth.	Oregon Ash
Galium oreganum Britton	Oregon Bedstraw
Bensoniella oregona (Abrams & Bacig.) Morton	Oregon Bensoniella
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
Scoliopus hallii S. Watson	Oregon Fetid Adderstongue
Scrophularia oregana Pennell	Oregon figwort
Geranium oreganum Howell	Oregon geranium
Coptis laciniata A. Gray	Oregon goldthread
Berberis aquifolium Pursh	Oregon Grape
Lupinus oreganus A. Heller	Oregon Lupine
Arabis oregana Rollins	Oregon rockcress
Micranthes oregana (Howell) Small	Oregon Saxifrage
Silene oregana S. Watson	Oregon silene
Selaginella oregana D.C. Eaton	Oregon spikemoss
Sedum oreganum Nutt.	Oregon stonecrop
Cicendia quadrangularis (Lam.) Griseb.	Oregon timwort
Viola hallii A. Gray	Oregon Violet
Calycadenia truncata DC.	Oregon western rosinweed
Quercus garryana Douglas ex Hook.	Oregon White Oak
Sericocarpus oregonensis Nutt.	Oregon Whitetop Aster
Epilobium oregonense Hausskn.	Oregon willowherb
Psilocarphus oregonus Nutt.	Oregon woollyheads
Perideridia oregana (S. Watson) Mathias	Oregon yampah
Photinia villosa (Thunb.) DC.	Oriental Photinia
Clematis orientalis L.	Oriental virginsbower
Corchorus hirtus L.	Orinoco jute
Impatiens glandulifera Royle	ornamental jewelweed
Lupinus ornatus Douglas ex Lindl.	ornate lupine
Maclura pomifera (Raf.) C.K. Schneid.	Osage-orange	✓
Vaccinium ovalifolium Sm.	Oval-leaf Blueberry
Hymenoxys hoopesii (A. Gray) Bierner	owl's-claws
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
Bromus pacificus Shear	Pacific brome
Huperzia haleakalae (Brack.) Holub	Pacific clubmoss
Corallorhiza mertensiana Bong.	Pacific coralroot
Cornus nuttallii Audubon ex Torr. & A. Gray	Pacific Dogwood
Alopecurus saccatus Vasey	Pacific foxtail
Chrysosplenium glechomifolium Nutt.	Pacific golden saxifrage
Cynoglossum grande Douglas ex Lehm.	Pacific hound's tongue
Streptanthus barbatus S. Watson	Pacific Jewelflower
Lupinus lepidus Douglas ex Lindl.	Pacific Lupine
Arbutus menziesii Pursh	Pacific Madrone
Azolla filiculoides Lam.	Pacific mosquitofern
Physocarpus capitatus (Pursh) Kuntze	Pacific ninebark
Gymnocarpium disjunctum (Rupr.) Ching	Pacific oakfern
Allium validum S. Watson	Pacific onion
Lathyrus vestitus Nutt.	Pacific pea
Toxicodendron diversilobum (Torr. & A. Gray) Greene	Pacific poison oak
Plagiobothrys tenellus (Nutt. ex Hook.) A. Gray	Pacific popcornflower
Calamagrostis nutkaensis (J. Presl) J. Presl ex Steud.	Pacific reedgrass
Rhododendron macrophyllum D. Don ex G. Don	Pacific rhododendron
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
Oenothera pallida Lindl.	pale evening primrose
Torreyochloa pallida (Torr.) Church	Pale False Mannagrass
Linum bienne Mill.	pale flax
Alyssum alyssoides (L.) L.	pale madwort
Monardella odoratissima subsp. glauca (Greene) Epling	Pale Monardella
Carex pallescens L.	pale sedge
Persicaria lapathifolia (L.) Delarbre	Pale Smartweed
Erysimum occidentale (S. Watson) B.L. Rob.	pale wallflower
Lupinus luteolus Kellogg	pale yellow lupine
Silene bernardina S. Watson	Palmer's catchfly
Astragalus arrectus A. Gray	Palouse milkvetch
Cirsium brevifolium Nutt.	Palouse thistle
Scirpus microcarpus J. Presl & C. Presl	panicled bulrush
Betula papyrifera Marshall	Paper Birch	✓
Urochloa mutica (Forssk.) T.Q. Nguyen	para grass
Malus pumila Mill.	paradise apple
Descurainia paradisa (A. Nelson & Kennedy) O.E. Schulz	Paradise Tansymustard
Elymus stebbinsii Gould	Parish wheatgrass
Solanum parishii A. Heller	Parish's nightshade
Eleocharis parishii Britton	Parish's spikerush
Perideridia parishii (J.M. Coult. & Rose) A. Nelson & J.F. Macbr.	Parish's yampah
Myriophyllum aquaticum (Vell.) Verdc.	Parrot Feather Watermilfoil
Castilleja pilosa (S. Watson) Rydb.	Parrothead Indian Paintbrush
Ceanothus parryi Trel.	Parry ceanothus
Arnica parryi A. Gray	Parry's arnica
Campanula parryi A. Gray	Parry's bellflower
Polygonum parryi Greene	Parry's knotweed
Ericameria parryi (A. Gray) G.L. Nesom & Baird	Parry's rabbitbrush
Juncus parryi Engelm.	Parry's rush
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
Prunus persica (L.) Batsch	Peach
Campanula persicifolia L.	peachleaf bellflower
Salix amygdaloides Andersson	peachleaf willow
Antennaria anaphaloides Rydb.	pearly pussytoes
Penstemon peckii Pennell	Peck's Beardtongue
Lomatium peckianum Mathias & Constance	Peck's Desertparsley
Castilleja peckiana Pennell	Peck's Indian Paintbrush
Astragalus peckii Piper	Peck's Milkvetch
Phacelia peckii J.T. Howell	Peck's Phacelia
Phlox peckii Wherry, nom. inq.	Peck's Phlox
Cardamine pensylvanica Muhl. ex Willd.	Pennsylvania bittercress
Ranunculus pensylvanicus L. f.	Pennsylvania buttercup
Parietaria pensylvanica Muhl. ex Willd.	Pennsylvania Pellitory
Polygonum pensylvanicum L.	Pennsylvania Smartweed
Mentha pulegium L.	pennyroyal
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
Pontederia cordata L.	Pickerelweed
Cruciata pedemontana (Bellardi) Ehrend.	piedmont bedstraw
Epilobium anagallidifolium Lam.	pimpernel willowherb
Viola lobata Benth.	Pine Violet
Calamagrostis rubescens Buckley	Pinegrass
Ceanothus diversifolius Kellogg	pinemat
Arctostaphylos nevadensis A. Gray	Pinemat Manzanita
Cryptantha simulans Greene	pinewoods cryptantha
Horkelia fusca Lindl.	Pinewoods Horkelia
Pedicularis semibarbata A. Gray	pinewoods lousewort
Antennaria geyeri A. Gray	pinewoods pussytoes
Heuchera rubescens Torr.	Pink Alumroot
Lonicera hispidula (Lindl.) Douglas ex Torr. & A. Gray	pink honeysuckle
Phyllodoce empetriformis (Sm.) D. Don	pink mountainheath
Abronia umbellata Lam.	Pink Sand Verbena
Chorizanthe membranacea Benth.	pink spineflower
Hackelia mundula (Jeps.) Ferris	Pink Stickseed
Chelone lyonii Pursh	pink turtlehead
Oxalis debilis Kunth	pink woodsorrel
Clarkia pulchella Pursh	pinkfairies
Trifolium gracilentum Torr. & A. Gray	pinpoint clover
Viola ocellata Torr. & A. Gray	pinto violet
Cryptantha scoparia A. Nelson	Pinyon Desert cryptantha
Chenopodium atrovirens Rydb.	pinyon goosefoot
Gayophytum ramosissimum Torr. & A. Gray	pinyon groundsmoke
Boechera platysperma (A.Gray) Al-Shehbaz	Pioneer Rockcress
Viola glabella Nutt.	pioneer violet
Anemone piperi Britton ex Rydb.	Piper's anemone
Poa piperi Hitchc.	Piper's Bluegrass
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
Eryngium planum L.	plains eryngo
Camissonia contorta (Douglas ex Lehm.) Kearney	Plains Evening Primrose
Doronicum plantagineum L.	Plantain False Leopardbane
Ranunculus alismifolius Geyer ex Benth.	plantainleaf buttercup
Phacelia inundata J.T. Howell	Playa Yellow Phacelia
Gentiana affinis Griseb.	pleated gentian
Penstemon neotericus D.D. Keck	Plumas County Beardtongue
Lupinus onustus S. Watson	Plumas Lupine
Trifolium plumosum Douglas ex Hook.	plumed clover
Malus prunifolia (Willd.) Borkh.	plumleaf crab apple
Narcissus poeticus L.	poet's narcissus
Dodecatheon poeticum L.F. Hend.	poet's shootingstar
Juncus oxymeris Engelm.	pointed rush
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
Chamaecyparis lawsoniana (A. Murray bis) Parl.	Port Orford Cedar
Bromus porteri (J.M. Coult.) Nash	Porter brome
Prunus lusitanica L.	Portugal laurel
Calendula officinalis L.	pot marigold
Bromus sterilis L.	poverty brome
Danthonia spicata (L.) P. Beauv. ex Roem. & Schult.	Poverty Oatgrass
Juncus tenuis Willd.	poverty rush
Iva axillaris Pursh	povertyweed
Dudleya farinosa (Lindl.) Britton & Rose	powdery liveforever
Amaranthus powellii S. Watson	Powell's Amaranth
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
Helianthus petiolaris Nutt.	Prairie Sunflower
Aristida oligantha Michx.	Prairie Threeawn
Sphenopholis obtusata (Michx.) Scribn.	Prairie Wedgescale
Carex preslii Steud.	Presl's sedge
Triteleia ixioides (W.T. Aiton) Greene	prettyface
Trifolium echinatum M. Bieb.	Prickly Clover
Symphytum asperum Lepechin	prickly comfrey
Ribes lacustre (Pers.) Poir.	prickly currant
Berkheya heterophylla O. Hoffm.	Prickly Gousblom
Hieracium horridum Fr.	prickly hawkweed
Lactuca serriola L.	Prickly Lettuce	✓
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
Poa pringlei Scribn.	Pringle's Bluegrass
Phacelia pringlei A. Gray	Pringle's Phacelia
Galega officinalis L.	professor-weed
Pogogyne floribunda Jokerst	Profuseflower Mesamint
Panicum miliaceum L.	proso millet
Eriogonum prociduum Reveal	Prostrate Buckwheat
Ceanothus prostratus Benth.	prostrate ceanothus
Hornungia procumbens (L.) Hayek	prostrate hutchinsia
Amaranthus albus L.	Prostrate Pigweed
Sporobolus neglectus Nash	puffsheath dropseed
Grindelia integrifolia DC.	Puget Sound Gumweed
Muhlenbergia filiformis (Thurb. ex S. Watson) Rydb.	pullup muhly
Tribulus terrestris L.	puncturevine
Iris purdyi Eastw.	Purdy's Iris
Amaranthus blitum L.	Purple Amaranth
Erigeron poliospermus A. Gray	purple cushion fleabane
Lamium purpureum L.	Purple Deadnettle
Brachypodium distachyon (L.) P. Beauv.	purple false brome
Allophyllum divaricatum (Nutt.) A.D. Grant & V.E. Grant	purple false gilyflower
Erythronium purpurascens S. Watson	Purple Fawnlily
Digitalis purpurea L.	Purple Foxglove
Lomatium columbianum Mathias & Constance	Purple Leptotaenia
Lythrum salicaria L.	Purple Loosestrife
Comarum palustre L.	purple marshlocks
Astragalus agrestis Douglas ex G. Don	purple milkvetch
Mimulus lewisii Pursh	purple monkeyflower
Saxifraga oppositifolia L.	purple mountain saxifrage
Phyllodoce breweri (A. Gray) A. Heller	purple mountainheath
Nassella pulchra (Hitchc.) Barkworth	purple needlegrass
Cyperus rotundus L.	Purple Nutsedge
Melica spectabilis Scribn.	purple oniongrass
Cortaderia jubata (Lem.) Stapf	Purple Pampas Grass
Sarracenia purpurea L.	purple pitcherplant
Callirhoe involucrata (Torr. & A. Gray) A. Gray	Purple Poppy Mallow
Calamagrostis purpurascens R. Br.	purple reedgrass
Salvia dorrii (Kellogg) Abrams	purple sage
Triplasis purpurea (Walter) Chapm.	purple sandgrass
Sanicula bipinnatifida Douglas ex Hook.	purple sanicle
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
Verbena incompta P.W. Michael	purpletop vervain
Suaeda calceoliformis (Hook.) Moq.	Pursh Seepweed
Rosa bridgesii Crép.	pygmy rose
Cirsium pyrenaicum (Jacq.) All.	Pyrenean Thistle
Micropus californicus Fisch. & C.A. Mey.	q-tips
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
Juncus dubius Engelm.	questionable rush
Galinsoga quadriradiata Cav.	Quickweed
Cryptantha affinis (A. Gray) Greene	quill cryptantha
Lewisia leeana (Porter) B.L. Rob.	Quill-Leaf Lewisia
Cydonia oblonga Mill.	quince
Ericameria bloomeri (A. Gray) J.F. Macbr.	rabbitbush
Trifolium arvense L.	Rabbitfoot Clover
Antennaria racemosa Hook.	raceme pussytoes
Chloris radiata (L.) Sw.	radiate fingergrass
Gentiana calycosa Griseb.	Rainier pleated gentian
Viola trinervata (Howell) Howell ex A. Gray	Rainier violet
Proboscidea louisianica (Mill.) Thell.	Ram's Horn
Trifolium albopurpureum Torr. & A. Gray	rancheria clover
Scheuchzeria palustris L.	rannoch-rush
Brassica napus L.	rape
Heterocodon rariflorum Nutt.	rareflower heterocodon
Penstemon rattanii A. Gray	Rattan's Beardtongue
Phacelia rattanii A. Gray	Rattan's phacelia
Bromus briziformis Fisch. & C.A. Mey.	rattlesnake brome
Botrychium virginianum (L.) Sw.	Rattlesnake Fern
Arnica discoidea Benth.	rayless arnica
Doellingeria tomentella (Greene) Semple, Brouillet & G.A.Allen	Rayless Aster
Senecio aronicoides DC.	rayless ragwort
Erigeron aphanactis (A. Gray) Greene	Rayless Shaggy Fleabane
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
Frangula rubra (Greene) V. Grub.	red buckthorn
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
Silene invisa C.L. Hitchc. & Maguire	Red Fir Catchfly
Oxybasis rubra (L.) S.Fuentes, Uotila & Borsch	Red Goosefoot
Vaccinium parvifolium Sm.	red huckleberry
Delphinium nudicaule Torr. & A. Gray	red larkspur
Acer rubrum L.	Red Maple	✓
Silene greenei (S.Watson ex B.L.Rob.) Howell	Red Mountain Catchfly
Clarkia concinna (Fisch. & C.A. Mey.) Greene	red ribbons
Spergularia rubra (L.) J. Presl & C. Presl	Red Sandspurry
Allium obtusum Lemmon	red Sierra onion
Centaurea calcitrapa L.	red star-thistle
Salicornia rubra A. Nelson	red swampfire

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