Home » Search: All Plants in Klamath Mountains/California High North Coast Range

3707 Plants Found

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Ordered by scientific name.

Scientific Name	Common Name	†	Map‡
Orobanche valida Jeps.	Rock Creek broomrape
Orobanche vallicola (Jeps.) Heckard	hillside broomrape
Orthilia secunda (L.) House	sidebells wintergreen
Orthocarpus bracteosus Benth.	Rosy Owl's-Clover
Orthocarpus cuspidatus Greene	toothed owl's-clover
Orthocarpus imbricatus Torr. ex S. Watson	Mountain Owl's-Clover
Orthocarpus luteus Nutt.	yellow owl's-clover
Orthocarpus pachystachyus A. Gray	Shasta Owl's-clover
Oryza sativa L.	rice
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 dillenii Jacq.	Slender Yellow Woodsorrel
Oxalis hirta L.	tropical woodsorrel
Oxalis incarnata L.	crimson woodsorrel
Oxalis oregana Nutt.	redwood-sorrel
Oxalis pes-caprae L.	Bermuda buttercup
Oxalis purpurea L.	purple woodsorrel
Oxalis radicosa A. Rich.	dwarf woodsorrel
Oxalis suksdorfii Trel.	Suksdorf Woodsorrel
Oxalis trilliifolia Hook.	threeleaf woodsorrel
Oxybasis rubra (L.) S.Fuentes, Uotila & Borsch	Red Goosefoot
Oxypolis occidentalis J.M. Coult. & Rose	western cowbane
Oxyria digyna (L.) Hill	Alpine Mountainsorrel
Packera bolanderi (A. Gray) W.A. Weber & Á. Löve	Bolander's ragwort
Packera cana (Hook.) W.A. Weber & Á. Löve	woolly groundsel
Packera clevelandii (Greene) W.A. Weber & Á. Löve	Cleveland's ragwort
Packera eurycephala (Torr. & A. Gray) W.A. Weber & Á. Löve	widehead groundsel
Packera greenei (A. Gray) W.A. Weber & Á. Löve	flame ragwort
Packera hesperia (Greene) W.A. Weber & Á. Löve	Western 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 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 hillmanii Chase	Hillman's panicgrass
Panicum hirticaule J. Presl	Mexican panicgrass
Panicum miliaceum L.	proso millet
Panicum rigidulum Bosc ex Nees	Redtop Panicgrass
Papaver rhoeas L.	corn poppy
Parapholis incurva (L.) C.E. Hubbard	Curved Sicklegrass
Parapholis strigosa (Dumort.) C.E. Hubbard	Strigose Sicklegrass
Parentucellia viscosa (L.) Caruel	yellow glandweed
Parietaria pensylvanica Muhl. ex Willd.	Pennsylvania Pellitory
Parnassia cirrata Piper	San Bernardino Grass Of Parnassus
Parnassia fimbriata K.D. Koenig	Fringed Grass of Parnassus
Parnassia palustris L.	marsh grass of Parnassus
Paronychia ahartii Ertter	Ahart's Nailwort
Paronychia franciscana Eastw.	San Francisco nailwort
Pascopyrum smithii (Rydb.) Á. Löve	Western Wheatgrass
Paspalum dilatatum Poir.	dallisgrass
Paspalum distichum L.	knotgrass
Paspalum urvillei Steud.	Vasey's grass
Pastinaca sativa L.	Wild Parsnip
Paxistima myrsinites (Pursh) Raf.	Oregon boxleaf
Pectocarya heterocarpa (I.M. Johnst.) I.M. Johnst.	Chuckwalla Combseed
Pectocarya penicillata (Hook. & Arn.) A. DC.	sleeping combseed
Pectocarya pusilla (A. DC.) A. Gray	little combseed
Pectocarya setosa A. Gray	moth combseed
Pedicularis attollens A. Gray	Little Elephantshead
Pedicularis bracteosa Benth.	bracted lousewort
Pedicularis contorta Benth.	coiled lousewort
Pedicularis densiflora Benth. ex Hook.	Indian warrior
Pedicularis groenlandica Retz.	Elephanthead Lousewort
Pedicularis howellii A. Gray	Howell's Lousewort
Pedicularis semibarbata A. Gray	pinewoods lousewort
Pediomelum californicum (S. Watson) Rydb.	California Indian breadroot
Pelargonium capitatum (L.) L'Hér. ex Aiton	rose scented geranium
Pelargonium grossularioides (L.) L'Hér. ex Aiton	gooseberry geranium
Pelargonium vitifolium (L.) L'Hér. ex Aiton	Grapeleaf Geranium
Pellaea andromedifolia (Kaulf.) Fée	coffee cliffbrake
Pellaea brachyptera (T. Moore) Baker	Sierra cliffbrake
Pellaea breweri D.C. Eaton	Brewer's cliffbrake
Pellaea mucronata (D.C. Eaton) D.C. Eaton	birdfoot cliffbrake
Penstemon anguineus Eastw.	Siskiyou Beardtongue
Penstemon azureus Benth.	Azure Penstemon
Penstemon cardwellii Howell	Cardwell's Beardtongue
Penstemon centranthifolius (Benth.) Benth.	scarlet bugler
Penstemon cinicola D.D. Keck	Ash Penstemon
Penstemon davidsonii Greene	Davidson's penstemon
Penstemon deustus Douglas ex Lindl.	Scabland Penstemon
Penstemon euglaucus English	Glaucous Beardtongue
Penstemon filiformis (D.D. Keck) D.D. Keck	Threadleaf Beardtongue
Penstemon gracilentus A. Gray	Slender Penstemon
Penstemon heterodoxus A. Gray	Sierra Beardtongue
Penstemon heterophyllus Lindl.	Bunchleaf Penstemon
Penstemon humilis Nutt. ex A. Gray	Low Beardtongue
Penstemon laetus A. Gray	Mountain Blue Penstemon
Penstemon neotericus D.D. Keck	Plumas County Beardtongue
Penstemon newberryi A. Gray	Mountain Pride
Penstemon procerus Douglas ex Graham	littleflower penstemon
Penstemon purpusii Brandegee	Snow Mountain Beardtongue
Penstemon rattanii A. Gray	Rattan's Beardtongue
Penstemon roezlii Regel	Roezl's Penstemon
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 tracyi D.D. Keck	Trinity Penstemon
Pentachaeta alsinoides Greene	tiny pygmydaisy
Pentachaeta exilis (A. Gray) A. Gray	meager pygmydaisy
Pentagramma triangularis "(Kaulf.) Yatsk.	goldback fern
Peraphyllum ramosissimum Nutt.	Wild Crab Apple
Perideridia bolanderi (A. Gray) A. Nelson & J.F. Macbr.	Bolander's yampah
Perideridia erythrorhiza (Piper) T.I. Chuang & Constance	Western Yampah
Perideridia gairdneri (Hook. & Arn.) Mathias	Gardner's yampah
Perideridia howellii (J.M. Coult. & Rose) Mathias	Howell's yampah
Perideridia kelloggii (A. Gray) Mathias	Kellogg's yampah
Perideridia lemmonii (J.M. Coult. & Rose) T.I. Chuang & Constance	Lemmon's yampah
Perideridia leptocarpa T.I. Chuang & Constance	Narrowseed Yampah
Perideridia oregana (S. Watson) Mathias	Oregon yampah
Perideridia parishii (J.M. Coult. & Rose) A. Nelson & J.F. Macbr.	Parish's yampah
Persicaria amphibia (L.) Delarbre	Water Knotweed
Persicaria hydropiperoides (Michx.) Small	Swamp Smartweed
Persicaria lapathifolia (L.) Delarbre	Pale Smartweed
Persicaria punctata (Elliott) Small	Dotted Smartweed
Petasites frigidus (L.) Fr.	arctic sweet coltsfoot
Petrorhagia dubia (Raf.) G. López & Romo	hairypink
Petrorhagia prolifera (L.) P.W. Ball & Heywood	childing pink
Phacelia argentea A. Nelson & J.F. Macbr.	Sanddune Phacelia
Phacelia bolanderi A. Gray	Bolander's Phacelia
Phacelia californica Cham.	California phacelia
Phacelia capitata Kruckeb.	Clustered Phacelia
Phacelia cicutaria Greene	caterpillar phacelia
Phacelia ciliata Benth.	Great Valley phacelia
Phacelia cookei Constance & Heckard	Cooke's Phacelia
Phacelia corymbosa Jeps.	serpentine phacelia
Phacelia distans Benth.	distant phacelia
Phacelia divaricata (Benth.) A. Gray	divaricate phacelia
Phacelia egena (Greene ex Brand) Greene ex J.T. Howell	Kaweah River phacelia
Phacelia glandulifera Piper	sticky phacelia
Phacelia greenei J.T. Howell	Scott Valley Phacelia
Phacelia hastata Douglas ex Lehm.	Silverleaf Phacelia
Phacelia heterophylla Pursh	varileaf phacelia
Phacelia humilis Torr. & A. Gray	low phacelia
Phacelia hydrophylloides Torr. ex A. Gray	waterleaf phacelia
Phacelia imbricata Greene	imbricate phacelia
Phacelia insularis Munz	coast phacelia
Phacelia inundata J.T. Howell	Playa Yellow Phacelia
Phacelia leonis J.T. Howell	Siskiyou Phacelia
Phacelia linearis (Pursh) Holz.	threadleaf phacelia
Phacelia malvifolia Cham.	stinging phacelia
Phacelia mutabilis Greene	Changeable Phacelia
Phacelia nemoralis Greene	shade phacelia
Phacelia peckii J.T. Howell	Peck's Phacelia
Phacelia pringlei A. Gray	Pringle's Phacelia
Phacelia procera A. Gray	tall phacelia
Phacelia purpusii Brandegee	Purpus' phacelia
Phacelia racemosa (Kellogg) Brandegee	Racemose Phacelia
Phacelia ramosissima Douglas ex Lehm.	branching phacelia
Phacelia rattanii A. Gray	Rattan's phacelia
Phacelia sericea (Graham) A. Gray	silky phacelia
Phacelia suaveolens Greene	sweetscented phacelia
Phacelia tanacetifolia Benth.	lacy phacelia
Phacelia thermalis Greene	Heated Phacelia
Phacelia vallicola Congd. ex Brand	Mariposa Phacelia
Phacelia verna Howell	Spring Phacelia
Phalaris angusta Nees ex Trin.	timothy canarygrass
Phalaris aquatica L.	bulbous canarygrass
Phalaris arundinacea L.	Reed Canary Grass
Phalaris brachystachys Link	shortspike canarygrass
Phalaris californica Hook. & Arn.	California canarygrass
Phalaris canariensis L.	Annual Canarygrass
Phalaris lemmonii Vasey	Lemmon's canarygrass
Phalaris minor Retz.	littleseed canarygrass
Phalaris paradoxa L.	hood canarygrass
Philadelphus californicus Benth.	California mock orange
Philadelphus lewisii Pursh	Lewis' mock orange
Phleum alpinum L.	Alpine Timothy
Phleum pratense L.	Timothy
Phlox adsurgens Torr. ex A. Gray	Northern Phlox
Phlox austromontana Coville	mountain phlox
Phlox diffusa Benth.	spreading phlox
Phlox hirsuta E.E. Nelson	Yreka Phlox
Phlox speciosa Pursh	showy phlox
Phoenicaulis cheiranthoides Nutt.	wallflower phoenicaulis
Phoenix canariensis hort. ex Chabaud	Canary Island date palm
Pholistoma auritum (Lindl.) Lilja	blue fiestaflower
Phoradendron bolleanum (Seem.) Eichl.	Bollean mistletoe
Phoradendron juniperinum Engelm. ex A. Gray	Juniper Mistletoe
Phoradendron leucarpum (Raf.) Reveal & M.C. Johnst.	Oak Mistletoe
Phragmites australis (Cav.) Trin. ex Steud.	Eurasian Common Reed
Phyla lanceolata (Michx.) Greene	Lanceleaf Fogfruit
Phyla nodiflora (L.) Greene	turkey tangle fogfruit
Phyllodoce breweri (A. Gray) A. Heller	purple mountainheath
Phyllodoce empetriformis (Sm.) D. Don	pink mountainheath
Phyllodoce glanduliflora (Hook.) Coville	yellow mountainheath
Phyllospadix scouleri Hook.	Scouler's surfgrass
Phyllospadix torreyi S. Watson	Torrey's surfgrass
Phyllostachys aurea Carrière ex A. Rivière & C. Rivière	golden bamboo
Physalis angulata L.	Cutleaf Groundcherry
Physalis grisea (Waterf.) M. Martínez	Strawberry-Tomato
Physalis longifolia Nutt.	Longleaf Groundcherry
Physalis pubescens L.	Husk Tomato
Physocarpus capitatus (Pursh) Kuntze	Pacific ninebark
Phytolacca americana L.	American Pokeweed	✓
Picea breweriana S. Watson	Brewer Spruce
Picea engelmannii Parry ex Engelm.	Engelmann Spruce
Picea sitchensis (Bong.) Carrière	Sitka spruce
Pickeringia montana Nutt. ex Torr. & A. Gray	chaparral pea
Pilularia americana A. Braun	American pillwort
Pimpinella saxifraga L.	solidstem burnet saxifrage
Pinguicula macroceras Link	California butterwort
Pinus albicaulis Engelm.	Whitebark Pine
Pinus attenuata Lemmon	knobcone pine
Pinus balfouriana Balf.	Foxtail Pine
Pinus contorta Douglas ex Loudon	Lodgepole Pine
Pinus jeffreyi Balf.	Jeffrey Pine
Pinus lambertiana Douglas	Sugar Pine
Pinus monticola Douglas ex D. Don	Western White Pine
Pinus muricata D. Don	Bishop pine
Pinus pinaster Aiton	Maritime Pine
Pinus ponderosa Lawson & C. Lawson	Ponderosa Pine
Pinus sabiniana Douglas ex Douglas	California foothill pine
Piperia colemanii R. Morgan & Glicenstein	Coleman's piperia
Piperia elongata Rydb.	denseflower rein orchid
Piperia leptopetala Rydb.	narrow-petal 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
Piptatherum miliaceum (L.) Coss.	smilograss
Pisum sativum L.	Garden Pea
Pittosporum tenuifolium Gaertn.	tawhiwhi
Pityopus californica (Eastw.) Copeland f.	California pinefoot
Plagiobothrys acanthocarpus (Piper) I.M. Johnst.	adobe popcornflower
Plagiobothrys austiniae (Greene) I.M. Johnst.	Austin's popcornflower
Plagiobothrys canescens Benth.	valley popcornflower
Plagiobothrys collinus (Phil.) I.M. Johnst.	Cooper's popcornflower
Plagiobothrys figuratus (Piper) I.M. Johnst. ex M. Peck	fragrant popcornflower
Plagiobothrys fulvus (Hook. & Arn.) I.M. Johnst.	fulvous popcornflower
Plagiobothrys glyptocarpus (Piper) I.M. Johnst.	sculptured popcornflower
Plagiobothrys greenei (A. Gray) I.M. Johnst.	Greene's popcornflower
Plagiobothrys hirtus (Greene) I.M. Johnst.	Rough Popcornflower
Plagiobothrys hispidus A. Gray	Cascade Popcornflower
Plagiobothrys humistratus (Greene) I.M. Johnst.	dwarf popcornflower
Plagiobothrys infectivus I.M. Johnst.	dye popcornflower
Plagiobothrys leptocladus (Greene) I.M. Johnst.	finebranched popcornflower
Plagiobothrys lithocaryus (Greene ex A. Gray) I.M. Johnst.	Mayacamas Popcornflower
Plagiobothrys nothofulvus (A. Gray) A. Gray	rusty popcornflower
Plagiobothrys reticulatus (Piper) I.M. Johnst.	netted popcornflower
Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnst.	Scouler's popcornflower
Plagiobothrys scriptus (Greene) I.M. Johnst.	scribe popcornflower
Plagiobothrys shastensis Greene ex A. Gray	Shasta popcornflower
Plagiobothrys stipitatus (Greene) I.M. Johnst.	stalked popcornflower
Plagiobothrys tenellus (Nutt. ex Hook.) A. Gray	Pacific popcornflower
Plagiobothrys tener (Greene) I.M. Johnst.	slender popcornflower
Plagiobothrys undulatus (Piper) I.M. Johnst.	artist's popcornflower
Planodes virginicum (L.) Greene	Virginia Winged Rockcress
Plantago aristata Michx.	Largebracted Plantain
Plantago erecta Morris	dotseed plantain
Plantago eriopoda Torr.	redwool plantain
Plantago lanceolata L.	Narrowleaf Plantain
Plantago major L.	Common Plantain
Plantago maritima L.	goose tongue
Plantago patagonica Jacq.	Woolly Plantain
Plantago pusilla Nutt.	Dwarf Plantain
Plantago subnuda Pilg.	tall coastal plantain
Plantago virginica L.	Virginia Plantain
Platanthera sparsiflora (S. Watson) Schltr.	sparse-flowered bog orchid
Platanthera stricta Lindl.	slender bog orchid
Platanus ×hispanica Mill. ex Münchh.	London Planetree
Platanus racemosa Nutt.	California sycamore
Platystemon californicus Benth.	Creamcups
Plectritis ciliosa (Greene) Jeps.	longspur seablush
Plectritis congesta (Lindl.) DC.	shortspur seablush
Plectritis macrocera Torr. & A. Gray	Longhorn Plectritis
Pleuricospora fimbriolata A. Gray	fringed pinesap
Pleuropogon californicus (Nees) Benth. ex Vasey	annual semaphoregrass
Pleuropogon hooverianus (L.D. Benson) J.T. Howell	North Coast semaphoregrass
Pleuropogon refractus (A. Gray) Benth. ex Vasey	nodding semaphoregrass
Pluchea odorata (L.) Cass.	sweetscent
Poa annua L.	annual bluegrass
Poa bolanderi Vasey	Bolander's bluegrass
Poa bulbosa L.	bulbous bluegrass
Poa compressa L.	Canada bluegrass
Poa confinis Vasey	coastline bluegrass
Poa douglasii Nees	Douglas' bluegrass
Poa fendleriana (Steud.) Vasey	muttongrass
Poa glauca Vahl	Glaucous Bluegrass
Poa howellii Vasey & Scribn.	Howell's bluegrass
Poa infirma Kunth	weak bluegrass
Poa kelloggii Vasey	Kellogg's bluegrass
Poa leptocoma Trin.	marsh bluegrass
Poa macrantha Vasey	seashore bluegrass
Poa palustris L.	Fowl Bluegrass
Poa piperi Hitchc.	Piper's Bluegrass
Poa pringlei Scribn.	Pringle's Bluegrass
Poa rhizomata Hitchc.	Rhizome Bluegrass
Poa secunda J. Presl	Sandberg Bluegrass
Poa sierrae J.T. Howell	Sierra Bluegrass
Poa stenantha Trin.	northern bluegrass
Poa trivialis L.	Rough Bluegrass
Poa unilateralis Scribn.	San Francisco bluegrass
Pogogyne floribunda Jokerst	Profuseflower Mesamint
Pogogyne serpylloides (Torr.) A. Gray	thymeleaf mesamint
Pogogyne ziziphoroides Benth.	Sacramento mesamint
Polanisia dodecandra (L.) DC.	redwhisker clammyweed
Polemonium californicum Eastw.	moving polemonium
Polemonium carneum A. Gray	royal Jacob's-ladder
Polemonium chartaceum H. Mason	Mason's Jacob's-Ladder
Polemonium eddyense Stubbs	Mount Eddy Jacob's-Ladder
Polemonium micranthum Benth.	annual polemonium
Polemonium occidentale Greene	western polemonium
Polemonium pulcherrimum Hook.	Jacob's-ladder
Polycarpon tetraphyllum (L.) L.	fourleaf manyseed
Polyctenium fremontii (S. Watson) Greene	desert combleaf
Polygonum argyrocoleon Steud. ex Kunze	silversheath knotweed
Polygonum bidwelliae S. Watson	Bidwell's Knotweed
Polygonum bolanderi W.H. Brewer	Bolander's knotweed
Polygonum californicum Meisn.	California knotweed
Polygonum douglasii Greene	Douglas' knotweed
Polygonum fowleri B.L. Rob.	Fowler's knotweed
Polygonum marinense T.R. Mert. & P.H. Raven	Marin knotweed
Polygonum minimum S. Watson	broadleaf knotweed
Polygonum paronychia Cham. & Schltdl.	beach knotweed
Polygonum parryi Greene	Parry's knotweed
Polygonum pensylvanicum L.	Pennsylvania Smartweed
Polygonum polygaloides Wall. ex Meisn.	Milkwort Knotweed
Polygonum ramosissimum Michx.	Bushy Knotweed
Polygonum shastense W.H. Brewer	Shasta knotweed
Polypodium californicum Kaulf.	California polypody
Polypodium calirhiza S. Whitmore & A.R. Sm.	nested polypody
Polypodium glycyrrhiza D.C. Eaton	licorice fern
Polypodium hesperium Maxon	western polypody
Polypodium scouleri Hook. & Grev.	leathery polypody
Polypogon australis Brongn.	Chilean rabbitsfoot grass
Polypogon interruptus Kunth	ditch rabbitsfoot grass
Polypogon maritimus Willd.	Mediterranean rabbitsfoot grass
Polypogon monspeliensis (L.) Desf.	annual rabbitsfoot grass
Polypogon viridis (Gouan) Breistr.	beardless rabbitsfoot grass
Polystichum californicum (D.C. Eaton) Diels	California swordfern
Polystichum dudleyi Maxon	Dudley's swordfern
Polystichum imbricans (D.C. Eaton) D.H. Wagner	narrowleaf swordfern
Polystichum lemmonii Underw.	Lemmon's hollyfern
Polystichum lonchitis (L.) Roth	northern hollyfern
Polystichum munitum (Kaulf.) C. Presl	western swordfern
Pontederia cordata L.	Pickerelweed
Pontederia crassipes Mart.	Common Water Hyacinth
Pontederia vaginalis Burm.f.	Heartshape False Pickerelweed
Populus alba L.	White Poplar
Populus balsamifera L.	Balsam Poplar
Populus deltoides W. Bartram ex Marshall	Eastern Cottonwood
Populus fremontii S. Watson	Fremont Cottonwood
Populus tremuloides Michx.	Quaking Aspen
Porterella carnosula (Hook. & Arn.) Torr.	Fleshy Porterella
Portulaca oleracea L.	Common Purslane
Potamogeton alpinus Balbis	alpine pondweed
Potamogeton amplifolius Tuck.	largeleaf pondweed
Potamogeton crispus L.	Curly Pondweed
Potamogeton diversifolius Raf.	waterthread pondweed
Potamogeton epihydrus Raf.	ribbonleaf pondweed
Potamogeton foliosus Raf.	Leafy Pondweed
Potamogeton gramineus L.	variableleaf pondweed
Potamogeton natans L.	floating pondweed
Potamogeton nodosus Poir.	longleaf 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 anglica Laicharding	English cinquefoil
Potentilla biennis Greene	biennial cinquefoil
Potentilla bolanderi (A.Gray) Greene	Border Horkelia
Potentilla cristae Ferlatte & Strother	Crested Cinquefoil
Potentilla daucifolia Greene	Carrotleaf Horkelia
Potentilla drummondii Lehm.	Drummond's cinquefoil
Potentilla flabellifolia Hook. ex Torr. & A. Gray	high mountain cinquefoil
Potentilla gracilis Douglas ex Hook.	slender cinquefoil
Potentilla hendersonii (Howell) J.T.Howell	Henderson's Horkelia
Potentilla longibracteata (Ertter) Mosyakin & Shiyan	Longbract Mousetail
Potentilla millefolia Rydb.	Cutleaf Cinquefoil
Potentilla newberryi A. Gray	Newberry's cinquefoil
Potentilla norvegica L.	Norwegian cinquefoil
Potentilla pickeringii (Torr. ex A.Gray) Greene	Silky Mousetail
Potentilla pulcherrima Lehm.	beautiful cinquefoil
Potentilla recta L.	sulphur cinquefoil
Potentilla sericata (S.Watson) Greene	Silky Horkelia
Primula suffrutescens A. Gray	Sierra Primrose
Proboscidea louisianica (Mill.) Thell.	Ram's Horn
Prosartes hookeri Torr.	drops-of-gold
Prosartes smithii "(Hook.) Utech	largeflower fairybells
Prunella vulgaris L.	Common Selfheal
Prunus cerasifera Ehrh.	cherry plum
Prunus domestica L.	European plum
Prunus emarginata (Douglas ex Hook.) D. Dietr.	bitter cherry
Prunus laurocerasus L.	cherry laurel
Prunus persica (L.) Batsch	Peach
Prunus spinosa L.	blackthorn
Prunus subcordata Benth.	Klamath plum
Prunus virginiana L.	Chokecherry
Pseudocydonia sinensis (Thouin) C.K. Schneid.	Chinese-Quince
Pseudognaphalium californicum (DC.) Anderb.	ladies' tobacco
Pseudognaphalium canescens (DC.) W.A. Weber	Wright's cudweed
Pseudognaphalium macounii (Greene) Kartesz	Macoun's cudweed
Pseudognaphalium ramosissimum (Nutt.) Anderb.	pink cudweed
Pseudognaphalium stramineum (Kunth) Anderb.	Cottonbatting Plant
Pseudoroegneria spicata (Pursh) Á. Löve	Bluebunch Wheatgrass
Pseudostellaria jamesiana (Torr.) W.A. Weber & R.L. Hartm.	tuber starwort
Pseudotsuga menziesii (Mirb.) Franco	Douglas Fir
Psilocarphus brevissimus Nutt.	short woollyheads
Psilocarphus elatior (A. Gray) A. Gray	meadow woollyheads
Psilocarphus oregonus Nutt.	Oregon woollyheads
Psilocarphus tenellus Nutt.	slender woollyheads
Ptelea crenulata Greene	California hoptree
Pteridium aquilinum (L.) Kuhn	western brackenfern
Pterospora andromedea Nutt.	woodland pinedrops
Pterostegia drymarioides Fisch. & C.A. Mey.	woodland pterostegia
Puccinellia distans (Jacq.) Parl.	weeping alkaligrass
Puccinellia howellii J.I. Davis	Howell's Alkaligrass
Puccinellia lemmonii (Vasey) Scribn.	Lemmon's alkaligrass
Puccinellia nuttalliana (Schult.) Hitchc.	Nuttall's Alkaligrass
Puccinellia pumila (Vasey) Hitchc.	dwarf alkaligrass
Puccinellia simplex Scribn.	California alkaligrass
Pueraria montana (Lour.) Merr.	Kudzu
Pulsatilla occidentalis (S. Watson) Freyn	white pasqueflower
Purshia tridentata (Pursh) DC.	Antelope Bitterbrush
Pycnanthemum californicum Torr. ex Durand	Sierra mint
Pyracantha angustifolia (Franch.) C.K. Schneid.	narrowleaf firethorn
Pyracantha coccinea M. Roem.	scarlet firethorn
Pyracantha fortuneana (Maxim.) Li	Chinese firethorn
Pyracantha koidzumii (Hayata) Rehder	Formosa firethorn
Pyrola asarifolia Michx.	Liverleaf Wintergreen
Pyrola minor L.	snowline wintergreen
Pyrola picta Sm.	whiteveined wintergreen
Pyrrocoma carthamoides Hook.	largeflower goldenweed
Pyrrocoma lanceolata (Hook.) Greene	lanceleaf goldenweed
Pyrrocoma racemosa (Nutt.) Torr. & A. Gray	clustered goldenweed
Pyrrocoma uniflora (Hook.) Greene	Plantain Goldenweed
Pyrus communis L.	Common Pear
Quercus agrifolia Née	California live oak
Quercus berberidifolia Liebm.	Scrub Oak
Quercus chrysolepis Liebm.	Canyon Live Oak
Quercus douglasii Hook. & Arn.	blue oak
Quercus dumosa Nutt.	coastal sage scrub oak
Quercus durata Jeps.	leather oak
Quercus garryana Douglas ex Hook.	Oregon White Oak
Quercus kelloggii Newberry	California Black Oak
Quercus lobata Née	valley oak
Quercus palmeri Engelm.	Palmer oak
Quercus parvula Greene	coast oak
Quercus sadleriana R. Br. ter	Deer Oak
Quercus vacciniifolia Kellogg	huckleberry oak
Quercus wislizeni A. DC.	interior live oak
Rafinesquia californica Nutt.	California plumeseed
Raillardella argentea (A. Gray) A. Gray	Silky Raillardella
Raillardella pringlei Greene	Showy Raillardella
Rainiera stricta (Greene) Greene	false silverback
Ranunculus acris L.	tall buttercup
Ranunculus alismifolius Geyer ex Benth.	plantainleaf buttercup
Ranunculus aquatilis L.	white water crowfoot
Ranunculus arvensis L.	corn buttercup
Ranunculus austro-oreganus L.D.Benson	Southern Oregon Buttercup
Ranunculus bonariensis Poir.	Carter's Buttercup
Ranunculus bulbosus L.	St. Anthony's turnip
Ranunculus californicus Benth.	California buttercup
Ranunculus canus Benth.	Sacramento Valley buttercup
Ranunculus cymbalaria Pursh	Alkali Buttercup
Ranunculus eschscholtzii Schltdl.	Eschscholtz's Buttercup
Ranunculus flabellaris Raf.	Yellow Water Buttercup
Ranunculus flammula L.	greater creeping spearwort
Ranunculus glaberrimus Hook.	sagebrush buttercup
Ranunculus gormanii Greene	Gorman's buttercup
Ranunculus hebecarpus Hook. & Arn.	delicate buttercup
Ranunculus lobbii (Hiern.) A. Gray	Lobb's buttercup
Ranunculus longirostris Godr.	Longbeak Buttercup
Ranunculus macounii Britton	Macoun's buttercup
Ranunculus muricatus L.	spinyfruit buttercup
Ranunculus occidentalis Nutt.	western buttercup
Ranunculus orthorhynchus Hook.	straightbeak buttercup
Ranunculus parviflorus L.	smallflower buttercup
Ranunculus populago Greene	popular buttercup
Ranunculus pusillus Poir.	low spearwort
Ranunculus repens L.	creeping buttercup
Ranunculus sardous Crantz	hairy buttercup
Ranunculus sceleratus L.	cursed buttercup
Ranunculus suksdorfii A. Gray	Suksdorf's buttercup
Ranunculus trichophyllus Chaix	threadleaf crowfoot
Ranunculus uncinatus D. Don ex G. Don	woodland buttercup
Raphanus raphanistrum L.	wild radish
Raphanus sativus L.	cultivated radish
Reseda alba L.	white upright mignonette
Reseda lutea L.	yellow mignonette
Reseda luteola L.	weld
Rhamnus crocea Nutt.	Redberry Buckthorn
Rhamnus ilicifolia Kellogg	hollyleaf redberry
Rhodiola integrifolia Raf.	ledge stonecrop
Rhododendron columbianum (Piper) Harmaja	Western Labrador Tea
Rhododendron macrophyllum D. Don ex G. Don	Pacific rhododendron
Rhododendron occidentale (Torr. & A. Gray) A. Gray	western azalea
Rhus aromatica Aiton	Fragrant Sumac
Rhus glabra L.	Smooth Sumac
Rhus ovata S. Watson	sugar sumac
Rhus trilobata Nutt.	Skunkbush Sumac
Rhynchospora alba (L.) Vahl	White Beaksedge

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