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2645 Plants Found

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Ordered by scientific name.

Scientific Name	Common Name	†	Map‡
Lycopodium alpinum L.	Alpine Clubmoss
Lycopodium annotinum L.	Stiff Clubmoss
Lycopodium clavatum L.	running clubmoss
Lycopodium complanatum L.	Groundcedar
Lycopodium lagopus (Laest. ex Hartm.) Zinserl. ex Kuzen	one-cone clubmoss
Lycopodium sitchense Rupr.	Sitka Clubmoss
Lycopus americanus Muhl. ex W.P.C. Barton	American Water Horehound
Lycopus asper Greene	Rough Bugleweed
Lycopus uniflorus Michx.	Northern Bugleweed
Lygodesmia juncea (Pursh) D. Don ex Hook.	rush skeletonplant
Lysichiton americanus Hultén & H. St. John	American skunkcabbage
Lysimachia ciliata L.	fringed loosestrife
Lysimachia hybrida Michx.	Lowland Yellow Loosestrife
Lysimachia latifolia (Hook.) Cholewa	Pacific Starflower
Lysimachia maritima (L.) Galasso, Banfi & Soldano	Sea Milkwort
Lysimachia nummularia L.	Creeping Jenny
Lysimachia punctata L.	large yellow loosestrife
Lysimachia terrestris "(L.) Britton	earth loosestrife
Lysimachia thyrsiflora L.	tufted loosestrife
Lysimachia vulgaris L.	Garden Yellow Loosestrife
Lythrum hyssopifolium L.	hyssop loosestrife
Lythrum portula (L.) D.A. Webb	spatulaleaf loosestrife
Lythrum salicaria L.	Purple Loosestrife
Madia citriodora Greene	lemonscented madia
Madia exigua (Sm.) A. Gray	small tarweed
Madia glomerata Hook.	mountain tarweed
Madia gracilis (Sm.) D.D. Keck	Grassy Tarweed
Madia sativa Molina	coast tarweed
Mahonia nervosa (Pursh) Nutt.	Cascade barberry
Mahonia repens (Lindl.) G. Don	creeping barberry
Maianthemum dilatatum (Alph. Wood) A. Nelson & J.F. Macbr.	false lily of the valley
Maianthemum racemosum (L.) Link	Feathery False Lily of the Valley
Maianthemum stellatum (L.) Link	Starry False Lily of the Valley
Malus baccata (L.) Borkh.	Siberian crab apple
Malus fusca (Raf.) C.K. Schneid.	Oregon crab apple
Malus hupehensis (Pamp.) Rehder	Chinese crab apple
Malus prunifolia (Willd.) Borkh.	plumleaf crab apple
Malus pumila Mill.	paradise apple
Malus sargentii Rehder	Sargent's apple
Malva alcea L.	vervain mallow
Malva moschata L.	Musk Mallow
Malva neglecta Wallr.	Common Mallow
Malva parviflora L.	cheeseweed mallow
Malva pusilla Sm.	Low Mallow
Malva sylvestris L.	High Mallow
Malva verticillata L.	cluster mallow
Malvella leprosa (Ortega) Krapov.	alkali mallow
Marah oreganus (Torr. ex S. Watson) Howell	coastal manroot
Marrubium vulgare L.	Common Horehound
Marsilea vestita Hook. & Grev.	hairy waterclover
Matricaria chamomilla L.	German Chamomile
Matricaria discoidea DC.	disc mayweed
Matthiola incana (L.) W.T. Aiton	tenweeks stock
Meconella oregana Nutt.	white fairypoppy
Medicago arabica (L.) Huds.	spotted medick
Medicago lupulina L.	Black Medick
Medicago polymorpha L.	burclover
Medicago sativa L.	Alfalfa
Melica bulbosa Geyer ex Porter & J.M. Coult.	oniongrass
Melica ciliata L.	hairy melicgrass
Melica fugax Bol.	Little Oniongrass
Melica harfordii Bol.	Harford's oniongrass
Melica smithii (Porter ex A. Gray) Vasey	Smith's melicgrass
Melica spectabilis Scribn.	purple oniongrass
Melica subulata (Griseb.) Scribn.	Alaska oniongrass
Melilotus indicus (L.) All.	annual yellow sweetclover
Melilotus officinalis (L.) Lam.	Yellow sweetclover
Melissa officinalis L.	Lemon Balm
Mentha ×piperita L.	Peppermint
Mentha aquatica L.	water mint
Mentha arvensis L.	Wild Mint
Mentha spicata L.	Spearmint
Mentha suaveolens Ehrh.	Apple Mint
Mentzelia albicaulis (Hook.) Torr. & A. Gray	whitestem blazingstar
Mentzelia dispersa S. Watson	bushy blazingstar
Mentzelia laevicaulis (Hook.) Torr. & A. Gray	Smoothstem Blazingstar
Menyanthes trifoliata L.	Buckbean
Menziesia ferruginea Sm.	rusty menziesia
Mertensia ciliata (James ex Torr.) G. Don	tall fringed bluebells
Mertensia longiflora Greene	small bluebells
Mertensia oblongifolia (Nutt.) G. Don	oblongleaf bluebells
Mertensia paniculata (Aiton) G. Don	Tall Bluebells
Mertensia platyphylla A. Heller	broadleaf bluebells
Mertensia umbratilis Greenm.	shade bluebells
Micranthes integrifolia (Hook.) Small	Wholeleaf Saxifrage
Micranthes odontoloma (Piper) A.Heller	Brook Saxifrage
Micranthes oregana (Howell) Small	Oregon Saxifrage
Microseris borealis (Bong.) Sch. Bip.	northern microseris
Microseris laciniata (Hook.) Sch. Bip.	cutleaf silverpuffs
Microseris nutans (Hook.) Sch. Bip.	nodding microseris
Microsteris gracilis (Hook.) Greene	slender phlox
Mimulus alsinoides Douglas ex Benth.	wingstem monkeyflower
Mimulus breviflorus Piper	shortflower monkeyflower
Mimulus breweri (Greene) Coville	Brewer's Monkeyflower
Mimulus floribundus Lindl.	manyflowered monkeyflower
Mimulus guttatus DC.	Seep Monkeyflower
Mimulus lewisii Pursh	purple monkeyflower
Mimulus moschatus Douglas ex Lindl.	muskflower
Mimulus nanus Hook. & Arn.	dwarf purple monkeyflower
Mimulus primuloides Benth.	primrose monkeyflower
Mimulus pulsiferae A. Gray	candelabrum monkeyflower
Mimulus suksdorfii A. Gray	Suksdorf's monkeyflower
Mimulus tilingii Regel	Tiling's Monkeyflower
Minuartia michauxii (Fenzl) Farw.	Michaux's stitchwort
Minuartia nuttallii (Pax) Briq.	Nuttall's sandwort
Minuartia tenella (Nutt.) Mattf.	slender stitchwort
Mirabilis jalapa L.	marvel of Peru
Mirabilis nyctaginea (Michx.) MacMill.	Heartleaf Four O'Clock
Misopates orontium (L.) Raf.	linearleaf snapdragon
Mitella nuda L.	naked miterwort
Mitella ovalis Greene	Coastal Miterwort
Mitella stauropetala Piper	smallflower miterwort
Moehringia lateriflora (L.) Fenzl	Bluntleaf Sandwort
Moehringia macrophylla (Hook.) Fenzl	Largeleaf Sandwort
Moenchia erecta (L.) G. Gaertn., B. Mey. & Scherb.	Upright Chickweed
Monarda didyma L.	Scarlet Beebalm
Monardella odoratissima Benth.	mountain monardella
Moneses uniflora (L.) A. Gray	Single Delight
Monotropa hypopitys L.	Pinesap
Monotropa uniflora L.	Ghost Pipe
Montia chamissoi (Ledeb. ex Spreng.) Greene	water minerslettuce
Montia dichotoma (Nutt.) Howell	dwarf minerslettuce
Montia diffusa (Nutt.) Greene	spreading minerslettuce
Montia fontana L.	Annual Water Minerslettuce
Montia howellii S. Watson	Howell's minerslettuce
Montia linearis (Douglas ex Hook.) Greene	narrowleaf minerslettuce
Montia parvifolia (Moc. ex DC.) Greene	littleleaf minerslettuce
Morus alba L.	White Mulberry
Muhlenbergia andina (Nutt.) Hitchc.	foxtail muhly
Muhlenbergia asperifolia (Nees & Meyen ex Trin.) Parodi	Scratchgrass
Muhlenbergia filiformis (Thurb. ex S. Watson) Rydb.	pullup muhly
Muhlenbergia racemosa "(Michx.) Britton	marsh muhly
Muhlenbergia richardsonis (Trin.) Rydb.	mat muhly
Muscari botryoides (L.) Mill.	common grape hyacinth
Mycelis muralis (L.) Dumort.	wall-lettuce
Myosotis arvensis (L.) Hill	field forget-me-not
Myosotis asiatica (Vesterg.) Schischkin & Sergievskaja	Asian forget-me-not
Myosotis azorica H.C. Watson ex Hook.	Azores forget-me-not
Myosotis discolor Pers.	changing forget-me-not
Myosotis latifolia Poir.	broadleaf forget-me-not
Myosotis laxa Lehm.	Bay Forget-me-not
Myosotis scorpioides L.	true forget-me-not
Myosotis stricta Link ex Roem. & Schult.	strict forget-me-not
Myosotis sylvatica Ehrh. ex Hoffm.	Wood Forget-Me-Not
Myosotis verna Nutt.	spring forget-me-not
Myosurus apetalus C. Gay	bristly mousetail
Myosurus minimus L.	Tiny Mousetail
Myrica gale L.	sweetgale
Myriophyllum aquaticum (Vell.) Verdc.	Parrot Feather Watermilfoil
Myriophyllum quitense Kunth	Andean watermilfoil
Myriophyllum sibiricum Kom.	shortspike watermilfoil
Myriophyllum spicatum L.	Eurasian watermilfoil
Myriophyllum verticillatum L.	whorl-leaf watermilfoil
Myrrhis odorata (L.) Scop.	anise
Nabalus hastatus (Less.) A.Heller	Western Rattlesnakeroot
Najas flexilis (Willd.) Rostk. & Schmidt	Nodding Waternymph
Najas guadalupensis (Spreng.) Magnus	southern waternymph
Nanozostera japonica (Asch. & Graebn.) P. Toml. & U. Posl.	dwarf eelgrass
Narcissus poeticus L.	poet's narcissus
Narcissus pseudonarcissus L.	daffodil
Nasturtium officinale W.T. Aiton	watercress
Navarretia breweri (A. Gray) Greene	Brewer's navarretia
Navarretia capillaris (Kellogg) Kuntze	miniature gilia
Navarretia intertexta (Benth.) Hook.	Needleleaf Navarretia
Navarretia sinistra (M.E. Jones) L.A. Johnson	Alva Day's pincushionplant
Navarretia squarrosa (Eschsch.) Hook. & Arn.	skunkbush
Nemophila breviflora A. Gray	basin nemophila
Nemophila parviflora Douglas ex Benth.	smallflower nemophila
Nemophila pedunculata Douglas ex Benth.	littlefoot nemophila
Neomonolepis spathulata (A.Gray) Sukhor.	Beaver Povertyweed
Neottia convallarioides (Sw.) Rich.	Broadlipped Twayblade
Nepeta cataria L.	Catnip
Nephrophyllidium crista-galli (Menzies ex Hook.) Gilg	deercabbage
Neslia paniculata (L.) Desv.	ballmustard
Nestotus stenophyllus (A. Gray) R.P. Roberts, Urbatsch & Neubig	Narrowleaf Mock Goldenweed
Nicotiana alata Link & Otto	jasmine tobacco
Nicotiana attenuata Torr. ex S. Watson	Coyote Tobacco
Nigella damascena L.	devil in the bush
Noccaea fendleri (A. Gray) Holub	Fendler's Pennycress
Nothocalais alpestris (A. Gray) K.L. Chambers	alpine lake false dandelion
Nothocalais troximoides (A. Gray) Greene	sagebrush false dandelion
Nothochelone nemorosa (Douglas ex Lindl.) Straw	Woodland Beardtongue
Nuphar polysepala Engelm.	Great Yellow Pond-Lily
Nuttallanthus texanus (Scheele) D.A. Sutton	Texas Toadflax
Nymphaea odorata Aiton	American White Waterlily
Nymphaea tetragona Georgi	pygmy waterlily
Nymphoides peltata (S.G. Gmel.) Kuntze	yellow floatingheart
Oemleria cerasiformis (Torr. & A. Gray ex Hook. & Arn.) Landon	Indian plum
Oenanthe sarmentosa C. Presl ex DC.	water parsely
Oenothera biennis L.	Common Evening Primrose
Oenothera caespitosa Nutt.	Tufted Evening Primrose
Oenothera elata Kunth	Hooker's evening primrose
Oenothera glazioviana Micheli	redsepal evening primrose
Oenothera pallida Lindl.	pale evening primrose
Oenothera villosa Thunb.	Hairy Evening Primrose
Olsynium douglasii (A. Dietr.) E.P. Bicknell	Douglas' grasswidow
Onobrychis viciifolia Scop.	sainfoin
Onopordum acanthium L.	Scotch cottonthistle
Ophioglossum pusillum Raf.	northern adderstongue
Oplopanax horridus (Sm.) Miq.	Devilsclub
Opuntia fragilis (Nutt.) Haw.	brittle pricklypear
Oreostemma alpigenum (Torr. & A. Gray) Greene	tundra aster
Origanum vulgare L.	Oregano
Orobanche californica Cham. & Schltdl.	California broomrape
Orobanche corymbosa (Rydb.) Ferris	flat-top broomrape
Orobanche fasciculata Nutt.	clustered broomrape
Orobanche ludoviciana Nutt.	Louisiana Broomrape
Orobanche pinorum Geyer ex Hook.	conifer broomrape
Orobanche uniflora L.	oneflowered broomrape
Orogenia linearifolia S. Watson	Great Basin Indian potato
Orthilia secunda (L.) House	sidebells wintergreen
Orthocarpus barbatus Cotton	Grand Coulee owl's-clover
Orthocarpus bracteosus Benth.	Rosy Owl's-Clover
Orthocarpus imbricatus Torr. ex S. Watson	Mountain Owl's-Clover
Orthocarpus luteus Nutt.	yellow owl's-clover
Orthocarpus tenuifolius (Pursh) Benth.	thinleaved owl's-clover
Osmorhiza berteroi DC.	sweetcicely
Osmorhiza depauperata Phil.	bluntseed sweetroot
Osmorhiza occidentalis (Nutt. ex Torr. & A. Gray) Torr.	western sweetroot
Osmorhiza purpurea (J.M. Coult. & Rose) Suksd.	purple sweetroot
Oxalis corniculata L.	Creeping Woodsorrel
Oxalis debilis Kunth	pink woodsorrel
Oxalis dillenii Jacq.	Slender Yellow Woodsorrel
Oxalis oregana Nutt.	redwood-sorrel
Oxalis stricta L.	Common Yellow Oxalis
Oxalis suksdorfii Trel.	Suksdorf Woodsorrel
Oxalis trilliifolia Hook.	threeleaf woodsorrel
Oxybasis rubra (L.) S.Fuentes, Uotila & Borsch	Red Goosefoot
Oxyria digyna (L.) Hill	Alpine Mountainsorrel
Oxytropis borealis DC.	boreal locoweed
Oxytropis campestris (L.) DC.	Field Locoweed
Oxytropis deflexa (Pall.) DC.	nodding locoweed
Oxytropis monticola A. Gray	yellowflower locoweed
Packera bolanderi (A. Gray) W.A. Weber & Á. Löve	Bolander's ragwort
Packera cana (Hook.) W.A. Weber & Á. Löve	woolly groundsel
Packera contermina (Greenm.) J.F. Bain	Northwestern Groundsel
Packera flettii (Wiegand) W.A. Weber & Á. Löve	Flett's ragwort
Packera indecora (Greene) Á. Löve & D. Löve	elegant groundsel
Packera macounii (Greene) W.A. Weber & Á. Löve	Siskiyou Mountain ragwort
Packera pauciflora (Pursh) Á. Löve & D. Löve	alpine groundsel
Packera paupercula (Michx.) Á. Löve & D. Löve	Balsam Groundsel
Packera porteri (Greene) C. Jeffrey	Porter's Groundsel
Packera pseudaurea (Rydb.) W.A. Weber & Á. Löve	falsegold groundsel
Packera streptanthifolia (Greene) W.A. Weber & Á. Löve	Rocky Mountain Groundsel
Packera subnuda (DC.) D.K. Trock & T.M. Barkley	Buek's groundsel
Paeonia brownii Douglas ex Hook.	Brown's peony
Panicum capillare L.	Witchgrass
Panicum dichotomiflorum Michx.	Fall Panicgrass
Panicum miliaceum L.	proso millet
Papaver cambricum L.	Welsh Poppy
Papaver dubium L.	blindeyes
Papaver orientale L.	Oriental poppy
Papaver rhoeas L.	corn poppy
Papaver somniferum L.	opium poppy
Parapholis incurva (L.) C.E. Hubbard	Curved Sicklegrass
Parentucellia viscosa (L.) Caruel	yellow glandweed
Parietaria judaica L.	spreading pellitory
Parietaria officinalis L.	upright pellitory
Parietaria pensylvanica Muhl. ex Willd.	Pennsylvania Pellitory
Parnassia fimbriata K.D. Koenig	Fringed Grass of Parnassus
Parnassia kotzebuei Cham. ex Spreng.	Kotzebue's Grass Of Parnassus
Parnassia palustris L.	marsh grass of Parnassus
Parthenocissus vitacea (Knerr) Hitchc.	Woodbine
Pascopyrum smithii (Rydb.) Á. Löve	Western Wheatgrass
Pastinaca sativa L.	Wild Parsnip
Paulownia tomentosa (Thunb.) Siebold & Zucc. ex Steud.	Princess Tree
Paxistima myrsinites (Pursh) Raf.	Oregon boxleaf
Pectocarya penicillata (Hook. & Arn.) A. DC.	sleeping combseed
Pectocarya pusilla (A. DC.) A. Gray	little combseed
Pedicularis bracteosa Benth.	bracted lousewort
Pedicularis contorta Benth.	coiled lousewort
Pedicularis groenlandica Retz.	Elephanthead Lousewort
Pedicularis ornithorhyncha Benth.	ducksbill lousewort
Pedicularis racemosa Douglas ex Benth.	Sickletop Lousewort
Pediocactus nigrispinus (Hochstätter) Hochstätter	snowball cactus
Pellaea brachyptera (T. Moore) Baker	Sierra cliffbrake
Pellaea breweri D.C. Eaton	Brewer's cliffbrake
Pellaea glabella Mett. ex Kuhn	smooth cliffbrake
Peltandra virginica (L.) Schott	green arrow arum
Penstemon acuminatus Douglas ex Lindl.	Sharpleaf Penstemon
Penstemon attenuatus Douglas ex Lindl.	Sulphur Penstemon
Penstemon cardwellii Howell	Cardwell's Beardtongue
Penstemon confertus Douglas ex Lindl.	Yellow Penstemon
Penstemon davidsonii Greene	Davidson's penstemon
Penstemon deustus Douglas ex Lindl.	Scabland Penstemon
Penstemon eriantherus Pursh	Fuzzytongue Penstemon
Penstemon fruticosus (Pursh) Greene	bush penstemon
Penstemon gairdneri Hook.	Gairdner's Beardtongue
Penstemon glandulosus Douglas	Stickystem Penstemon
Penstemon humilis Nutt. ex A. Gray	Low Beardtongue
Penstemon ovatus Douglas ex Hook.	eggleaf beardtongue
Penstemon procerus Douglas ex Graham	littleflower penstemon
Penstemon pruinosus Douglas ex Lindl.	Chelan beardtongue
Penstemon richardsonii Douglas ex Lindl.	cutleaf beardtongue
Penstemon rupicola (Piper) Howell	Cliff Beardtongue
Penstemon rydbergii A. Nelson	Rydberg's Penstemon
Penstemon serrulatus Menzies ex Sm.	serrulate penstemon
Penstemon speciosus Douglas ex Lindl.	Royal Penstemon
Penstemon triphyllus Douglas ex Lindl.	Riggin's Penstemon
Penstemon venustus Douglas ex Lindl.	Venus Penstemon
Penstemon washingtonensis D.D. Keck	Washington Beardtongue
Pentaglottis sempervirens (L.) Tausch ex L.H. Bailey	evergreen bugloss
Pentagramma triangularis "(Kaulf.) Yatsk.	goldback fern
Perideridia gairdneri (Hook. & Arn.) Mathias	Gardner's yampah
Perilla frutescens (L.) Britton	Beefsteak Plant
Persicaria amphibia (L.) Delarbre	Water Knotweed
Persicaria hydropiper (L.) Delarbre	Marshpepper Knotweed
Persicaria hydropiperoides (Michx.) Small	Swamp Smartweed
Persicaria lapathifolia (L.) Delarbre	Pale Smartweed
Persicaria maculosa Gray	Spotted Ladysthumb
Persicaria punctata (Elliott) Small	Dotted Smartweed
Persicaria setacea (Baldwin) Small	Bog Smartweed
Petasites frigidus (L.) Fr.	arctic sweet coltsfoot
Petrophytum cinerascens (Piper) Rydb.	halfshrub rockmat
Petrophytum hendersonii (Canby) Rydb.	Olympic Mountain rockmat
Petroselinum crispum (Mill.) Nyman ex A.W. Hill	Parsley
Phacelia franklinii (R. Br.) A. Gray	Franklin's phacelia
Phacelia glandulifera Piper	sticky phacelia
Phacelia hastata Douglas ex Lehm.	Silverleaf Phacelia
Phacelia heterophylla Pursh	varileaf phacelia
Phacelia humilis Torr. & A. Gray	low phacelia
Phacelia leptosepala Rydb.	narrowsepal phacelia
Phacelia linearis (Pursh) Holz.	threadleaf phacelia
Phacelia minutissima L.F. Hend.	Small Phacelia
Phacelia nemoralis Greene	shade phacelia
Phacelia procera A. Gray	tall phacelia
Phacelia ramosissima Douglas ex Lehm.	branching phacelia
Phacelia sericea (Graham) A. Gray	silky phacelia
Phalaris arundinacea L.	Reed Canary Grass
Phalaris canariensis L.	Annual Canarygrass
Phalaris paradoxa L.	hood canarygrass
Phegopteris connectilis (Michx.) Watt	long beechfern
Phemeranthus sediformis (Poelln.) Kiger	Okanogan Fameflower
Phemeranthus spinescens (Torr.) Hershkovitz	spiny fameflower
Philadelphus lewisii Pursh	Lewis' mock orange
Phleum alpinum L.	Alpine Timothy
Phleum pratense L.	Timothy
Phlox aculeata A. Nelson	sagebrush phlox
Phlox austromontana Coville	mountain phlox
Phlox diffusa Benth.	spreading phlox
Phlox hendersonii (E.E. Nelson) Cronquist	Henderson's phlox
Phlox longifolia Nutt.	longleaf phlox
Phlox paniculata L.	Fall Phlox
Phlox speciosa Pursh	showy phlox
Phoenicaulis cheiranthoides Nutt.	wallflower phoenicaulis
Photinia davidiana (Decne.) Cardot	Chinese photinia
Photinia villosa (Thunb.) DC.	Oriental Photinia
Phragmites americanus (Saltonst., P.M.Peterson & Soreng) A.Haines	American Common Reed
Phragmites australis (Cav.) Trin. ex Steud.	Eurasian Common Reed
Phyllodoce empetriformis (Sm.) D. Don	pink mountainheath
Phyllodoce glanduliflora (Hook.) Coville	yellow mountainheath
Phyllospadix scouleri Hook.	Scouler's surfgrass
Phyllospadix serrulatus Rupr. ex Asch.	toothed surfgrass
Phyllospadix torreyi S. Watson	Torrey's surfgrass
Physalis longifolia Nutt.	Longleaf Groundcherry
Physalis philadelphica Lam.	Mexican Groundcherry
Physaria alpestris Suksd.	Washington Twinpod
Physaria geyeri (Hook.) A. Gray	Geyer's Twinpod
Physocarpus capitatus (Pursh) Kuntze	Pacific ninebark
Physocarpus malvaceus (Greene) Kuntze	mallow ninebark
Physostegia parviflora Nutt. ex A. Gray	Western False Dragonhead
Phytolacca americana L.	American Pokeweed	✓
Picea engelmannii Parry ex Engelm.	Engelmann Spruce
Picea sitchensis (Bong.) Carrière	Sitka spruce
Picris hieracioides L.	Hawkweed Oxtongue
Pilosella aurantiaca (L.) F.W.Schultz & Sch.Bip.	Fox-and-Cubs
Pilosella piloselloides (Vill.) Soják	Tall Hawkweed
Pimpinella major (L.) Huds.	hollowstem burnet saxifrage
Pinguicula macroceras Link	California butterwort
Pinus albicaulis Engelm.	Whitebark Pine
Pinus contorta Douglas ex Loudon	Lodgepole Pine
Pinus monticola Douglas ex D. Don	Western White Pine
Pinus ponderosa Lawson & C. Lawson	Ponderosa Pine
Piperia elongata Rydb.	denseflower rein orchid
Piperia transversa Suksd.	royal rein orchid
Piperia unalascensis (Spreng.) Rydb.	slender-spire orchid
Piptatheropsis exigua (Thurb.) Romasch., P.M. Peterson & R.J. Soreng	Little Ricegrass
Pityopus californica (Eastw.) Copeland f.	California pinefoot
Plagiobothrys figuratus (Piper) I.M. Johnst. ex M. Peck	fragrant popcornflower
Plagiobothrys leptocladus (Greene) I.M. Johnst.	finebranched popcornflower
Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnst.	Scouler's popcornflower
Plagiobothrys tenellus (Nutt. ex Hook.) A. Gray	Pacific popcornflower
Plantago arenaria Waldst. & Kit.	sand plantain
Plantago aristata Michx.	Largebracted Plantain
Plantago bigelovii A. Gray	Coast Plantain
Plantago coronopus L.	Buckhorn Plantain
Plantago lanceolata L.	Narrowleaf Plantain
Plantago macrocarpa Cham. & Schltdl.	seashore plantain
Plantago major L.	Common Plantain
Plantago maritima L.	goose tongue
Plantago patagonica Jacq.	Woolly Plantain
Platanthera aquilonis Sheviak	northern green orchid
Platanthera chorisiana (Cham.) Rchb.	Chimissso's orchid
Platanthera elegans Lindl.	Hillside Rein Orchid
Platanthera huronensis (Nutt.) Lindl.	Huron green orchid
Platanthera obtusata (Banks ex Pursh) Lindl.	bluntleaved orchid
Platanthera orbiculata (Pursh) Lindl.	lesser roundleaved orchid
Platanthera sparsiflora (S. Watson) Schltr.	sparse-flowered bog orchid
Platanthera stricta Lindl.	slender bog orchid
Plectritis congesta (Lindl.) DC.	shortspur seablush
Plectritis macrocera Torr. & A. Gray	Longhorn Plectritis
Pleuricospora fimbriolata A. Gray	fringed pinesap
Pleuropogon refractus (A. Gray) Benth. ex Vasey	nodding semaphoregrass
Poa abbreviata R. Br.	short bluegrass
Poa alpina L.	Alpine Bluegrass
Poa annua L.	annual bluegrass
Poa arctica R. Br.	arctic bluegrass
Poa bolanderi Vasey	Bolander's bluegrass
Poa bulbosa L.	bulbous bluegrass
Poa compressa L.	Canada bluegrass
Poa confinis Vasey	coastline bluegrass
Poa curtifolia Scribn.	Little Mountain Bluegrass
Poa cusickii Vasey	Cusick's Bluegrass
Poa fendleriana (Steud.) Vasey	muttongrass
Poa glauca Vahl	Glaucous Bluegrass
Poa howellii Vasey & Scribn.	Howell's bluegrass
Poa laxiflora Buckley	looseflower bluegrass
Poa leptocoma Trin.	marsh bluegrass
Poa lettermanii Vasey	Letterman's bluegrass
Poa macrantha Vasey	seashore bluegrass
Poa marcida Hitchc.	withered bluegrass
Poa palustris L.	Fowl Bluegrass
Poa paucispicula Scribn. & Merr.	Alaska bluegrass
Poa secunda J. Presl	Sandberg Bluegrass
Poa stenantha Trin.	northern bluegrass
Poa suksdorfii (Beal) Vasey ex Piper	western bluegrass
Poa trivialis L.	Rough Bluegrass
Poa wheeleri Vasey	Wheeler's Bluegrass
Polemonium californicum Eastw.	moving polemonium
Polemonium carneum A. Gray	royal Jacob's-ladder
Polemonium elegans Greene	elegant Jacob's-ladder
Polemonium micranthum Benth.	annual polemonium
Polemonium occidentale Greene	western polemonium
Polemonium pulcherrimum Hook.	Jacob's-ladder
Polemonium viscosum Nutt.	Sticky Polemonium
Polygonum cascadense W.H. Baker	Cascade Knotweed
Polygonum douglasii Greene	Douglas' knotweed
Polygonum erectum L.	Erect Knotweed
Polygonum fowleri B.L. Rob.	Fowler's knotweed
Polygonum minimum S. Watson	broadleaf knotweed
Polygonum paronychia Cham. & Schltdl.	beach knotweed
Polygonum ramosissimum Michx.	Bushy Knotweed
Polypodium amorphum Suksd.	irregular polypody
Polypodium glycyrrhiza D.C. Eaton	licorice fern
Polypodium hesperium Maxon	western polypody
Polypodium scouleri Hook. & Grev.	leathery polypody
Polypogon monspeliensis (L.) Desf.	annual rabbitsfoot grass
Polypogon viridis (Gouan) Breistr.	beardless rabbitsfoot grass
Polystichum andersonii Hopkins	Anderson's hollyfern
Polystichum imbricans (D.C. Eaton) D.H. Wagner	narrowleaf swordfern
Polystichum kruckebergii W.H. Wagner	Kruckeberg's Hollyfern
Polystichum lemmonii Underw.	Lemmon's hollyfern
Polystichum lonchitis (L.) Roth	northern hollyfern
Polystichum munitum (Kaulf.) C. Presl	western swordfern
Polystichum scopulinum (D.C. Eaton) Maxon	Mountain Hollyfern
Pontederia crassipes Mart.	Common Water Hyacinth
Populus alba L.	White Poplar
Populus balsamifera L.	Balsam Poplar
Populus deltoides W. Bartram ex Marshall	Eastern Cottonwood
Populus nigra L.	Lombardy poplar
Populus tremuloides Michx.	Quaking Aspen
Portulaca oleracea L.	Common Purslane
Potamogeton alpinus Balbis	alpine pondweed
Potamogeton amplifolius Tuck.	largeleaf pondweed
Potamogeton crispus L.	Curly Pondweed
Potamogeton epihydrus Raf.	ribbonleaf 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. & W.D.J. Koch	bluntleaf pondweed
Potamogeton praelongus Wulfen	whitestem pondweed
Potamogeton pusillus L.	small pondweed
Potamogeton richardsonii (Benn.) Rydb.	Richardson's pondweed
Potamogeton robbinsii Oakes	Robbins' Pondweed
Potamogeton zosteriformis Fernald	flatstem pondweed
Potentilla argentea L.	silver cinquefoil
Potentilla biennis Greene	biennial cinquefoil
Potentilla drummondii Lehm.	Drummond's cinquefoil
Potentilla flabellifolia Hook. ex Torr. & A. Gray	high mountain cinquefoil
Potentilla gracilis Douglas ex Hook.	slender cinquefoil
Potentilla inclinata Vill.	ashy cinquefoil
Potentilla nivea L.	Snow Cinquefoil
Potentilla norvegica L.	Rough Cinquefoil
Potentilla pulcherrima Lehm.	beautiful cinquefoil
Potentilla recta L.	sulphur cinquefoil
Potentilla rivalis Nutt.	Brook Cinquefoil
Potentilla supina L.	Paradox Cinquefoil
Potentilla villosa Pall. ex Pursh	villous cinquefoil
Primula conjugens (Greene) A.R.Mast & Reveal	Bonneville Shootingstar
Primula hendersonii (A.Gray) A.R.Mast & Reveal	Mosquito Bills
Primula jeffreyi (Van Houtte) A.R.Mast & Reveal	Sierra Shootingstar
Primula latiloba (A.Gray) A.R.Mast & Reveal	White Shootingstar
Primula pauciflora (Durand) A.R.Mast & Reveal	Darkthroat Shootingstar
Proboscidea louisianica (Mill.) Thell.	Ram's Horn
Prosartes hookeri Torr.	drops-of-gold
Prosartes smithii "(Hook.) Utech	largeflower fairybells
Prosartes trachycarpa S. Watson	roughfruit fairybells

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