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4215 Plants Found

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Ordered by scientific name.

Scientific Name	Common Name	†	Map‡
Pentachaeta alsinoides Greene	tiny pygmydaisy
Pentachaeta exilis (A. Gray) A. Gray	meager pygmydaisy
Pentachaeta fragilis Brandegee	fragile pygmydaisy
Pentagramma pallida (Weath.) Yatsk., Windham & E. Wollenw.	Pale Silverback Fern
Pentagramma triangularis "(Kaulf.) Yatsk.	goldback fern
Pericome caudata A. Gray	mountain tail-leaf
Perideridia bacigalupii T.I. Chuang & Constance	Mother Lode Yampah
Perideridia bolanderi (A. Gray) A. Nelson & J.F. Macbr.	Bolander's yampah
Perideridia californica (Torr.) A. Nelson & J.F. Macbr.	California 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 oregana (S. Watson) Mathias	Oregon yampah
Perideridia parishii (J.M. Coult. & Rose) A. Nelson & J.F. Macbr.	Parish's yampah
Perideridia pringlei (J.M. Coult. & Rose) A. Nelson & J.F. Macbr.	adobe yampah
Perityle emoryi Torr.	Emory's rockdaisy
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 orientalis (L.) Spach	Kiss Me Over The Garden Gate
Persicaria punctata (Elliott) Small	Dotted Smartweed
Petalonyx nitidus S. Watson	Shinyleaf Sandpaper Plant
Petalonyx thurberi A. Gray	Thurber's sandpaper plant
Petasites frigidus (L.) Fr.	arctic sweet coltsfoot
Petradoria pumila (Nutt.) Greene	Rock Goldenrod
Petrophytum acuminatum Rydb.	Big Arroyo Rockmat
Petrophytum caespitosum (Nutt.) Rydb.	mat rockspirea
Petrorhagia dubia (Raf.) G. López & Romo	hairypink
Petrorhagia prolifera (L.) P.W. Ball & Heywood	childing pink
Petroselinum crispum (Mill.) Nyman ex A.W. Hill	Parsley
Phacelia affinis A. Gray	limestone phacelia
Phacelia austromontana J.T. Howell	Southern Sierra Phacelia
Phacelia bicolor Torr. ex S. Watson	Twocolor Phacelia
Phacelia bolanderi A. Gray	Bolander's Phacelia
Phacelia brachyloba (Benth.) A. Gray	shortlobe phacelia
Phacelia breweri A. Gray	Brewer's phacelia
Phacelia californica Cham.	California phacelia
Phacelia cicutaria Greene	caterpillar phacelia
Phacelia ciliata Benth.	Great Valley phacelia
Phacelia congdonii Greene	Congdon's Phacelia
Phacelia corymbosa Jeps.	serpentine phacelia
Phacelia crenulata Torr. ex S. Watson	cleftleaf wildheliotrope
Phacelia cryptantha Greene	Hiddenflower Phacelia
Phacelia curvipes Torr. ex S. Watson	Washoe phacelia
Phacelia davidsonii A. Gray	Davidson's phacelia
Phacelia distans Benth.	distant phacelia
Phacelia divaricata (Benth.) A. Gray	divaricate phacelia
Phacelia douglasii (Benth.) Torr.	Douglas' phacelia
Phacelia egena (Greene ex Brand) Greene ex J.T. Howell	Kaweah River phacelia
Phacelia eisenii Brandegee	Eisen's Phacelia
Phacelia exilis (A. Gray) G.L. Lee	Transverse Range Phacelia
Phacelia fremontii Torr.	Fremont's Phacelia
Phacelia hastata Douglas ex Lehm.	Silverleaf Phacelia
Phacelia heterophylla Pursh	varileaf phacelia
Phacelia hubbyi (J.F. Macbr.) L.M. Garrison	caterpillar phacelia
Phacelia humilis Torr. & A. Gray	low phacelia
Phacelia hydrophylloides Torr. ex A. Gray	waterleaf phacelia
Phacelia imbricata Greene	imbricate phacelia
Phacelia lemmonii A. Gray	Lemmon's Phacelia
Phacelia marcescens Eastw. ex J.F. Macbr.	Persistentflower Phacelia
Phacelia minor (Harv.) Thell.	wild canterbury bells
Phacelia mohavensis A. Gray	Mojave Phacelia
Phacelia mutabilis Greene	Changeable Phacelia
Phacelia nashiana Jeps.	Charlotte's Phacelia
Phacelia nemoralis Greene	shade phacelia
Phacelia novenmillensis Munz	Nine Mile Canyon Phacelia
Phacelia orogenes Brand	Mountain Phacelia
Phacelia pachyphylla A. Gray	blacktack phacelia
Phacelia phacelioides (Benth.) Brand	Mt. Diablo phacelia
Phacelia platyloba A. Gray	Broadlobe Phacelia
Phacelia procera A. Gray	tall phacelia
Phacelia purpusii Brandegee	Purpus' phacelia
Phacelia quickii J.T. Howell	Quick's Phacelia
Phacelia racemosa (Kellogg) Brandegee	Racemose Phacelia
Phacelia ramosissima Douglas ex Lehm.	branching phacelia
Phacelia rattanii A. Gray	Rattan's phacelia
Phacelia rotundifolia Torr. ex S. Watson	roundleaf phacelia
Phacelia stebbinsii Constance & Heckard	Stebbins' Phacelia
Phacelia suaveolens Greene	sweetscented phacelia
Phacelia tanacetifolia Benth.	lacy phacelia
Phacelia vallicola Congd. ex Brand	Mariposa Phacelia
Phacelia vallis-mortae J. Voss	Death Valley phacelia
Phalacroseris bolanderi A. Gray	Bolander's Mock Dandelion
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 caroliniana Walter	Carolina Canarygrass
Phalaris lemmonii Vasey	Lemmon's canarygrass
Phalaris minor Retz.	littleseed canarygrass
Phalaris paradoxa L.	hood canarygrass
Philadelphus californicus Benth.	California mock orange
Philadelphus cordifolius Lange	Heartleaf Mock Orange
Philadelphus lewisii Pursh	Lewis' mock orange
Phleum alpinum L.	Alpine Timothy
Phleum pratense L.	Timothy
Phlox austromontana Coville	mountain phlox
Phlox condensata (A. Gray) E.E. Nelson	Dwarf Phlox
Phlox diffusa Benth.	spreading phlox
Phlox dispersa Sharsm.	High Sierra Phlox
Phlox pulvinata (Wherry) Cronquist	Cushion Phlox
Phlox speciosa Pursh	showy phlox
Phlox stansburyi (Torr.) A. Heller	cold-desert phlox
Phoenicaulis cheiranthoides Nutt.	wallflower phoenicaulis
Phoenix canariensis hort. ex Chabaud	Canary Island date palm
Pholisma arenarium Nutt. ex Hook.	desert christmas tree
Pholistoma auritum (Lindl.) Lilja	blue fiestaflower
Pholistoma membranaceum (Benth.) Constance	white fiestaflower
Pholistoma racemosum (Nutt. ex A. Gray) Constance	racemed 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
Phyllostachys aurea Carrière ex A. Rivière & C. Rivière	golden bamboo
Phyllostachys bambusoides Siebold & Zucc.	Japanese timber bamboo
Physalis acutifolia (Miers) Sandw.	Sharpleaf Groundcherry
Physalis angulata L.	Cutleaf Groundcherry
Physalis crassifolia Benth.	yellow nightshade groundcherry
Physalis philadelphica Lam.	Mexican Groundcherry
Physalis pubescens L.	Husk Tomato
Physocarpus capitatus (Pursh) Kuntze	Pacific ninebark
Phytolacca americana L.	American Pokeweed	✓
Pickeringia montana Nutt. ex Torr. & A. Gray	chaparral pea
Pilularia americana A. Braun	American pillwort
Pinus albicaulis Engelm.	Whitebark Pine
Pinus attenuata Lemmon	knobcone pine
Pinus balfouriana Balf.	Foxtail Pine
Pinus brutia Ten.	Calabrian Pine
Pinus contorta Douglas ex Loudon	Lodgepole Pine
Pinus coulteri D. Don	Coulter pine
Pinus flexilis James	Limber Pine
Pinus halepensis Mill.	aleppo pine
Pinus jeffreyi Balf.	Jeffrey Pine
Pinus lambertiana Douglas	Sugar Pine
Pinus monophylla Torr. & Frém.	Singleleaf Pinyon
Pinus monticola Douglas ex D. Don	Western White Pine
Pinus muricata D. Don	Bishop pine
Pinus pinea L.	Italian stone 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
Piptatherum miliaceum (L.) Coss.	smilograss
Pistacia atlantica Desf.	Mt. Atlas Mastic Tree
Pistacia chinensis Bunge	Chinese Pistache
Pisum sativum L.	Garden Pea
Pittosporum tobira (Thunb.) W.T. Aiton	Japanese cheesewood
Pittosporum undulatum Vent.	Australian cheesewood
Pityopus californica (Eastw.) Copeland f.	California pinefoot
Plagiobothrys acanthocarpus (Piper) I.M. Johnst.	adobe popcornflower
Plagiobothrys arizonicus (A. Gray) Greene ex A. Gray	Arizona popcornflower
Plagiobothrys austiniae (Greene) I.M. Johnst.	Austin's popcornflower
Plagiobothrys bracteatus (Howell) I.M. Johnst.	Bracted Popcornflower
Plagiobothrys canescens Benth.	valley popcornflower
Plagiobothrys collinus (Phil.) I.M. Johnst.	Cooper's popcornflower
Plagiobothrys distantiflorus (Piper) I.M. Johnst. ex M. Peck	California 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 hispidus A. Gray	Cascade Popcornflower
Plagiobothrys humistratus (Greene) I.M. Johnst.	dwarf popcornflower
Plagiobothrys hystriculus (Piper) I.M. Johnst.	bearded popcornflower
Plagiobothrys infectivus I.M. Johnst.	dye popcornflower
Plagiobothrys jonesii A. Gray	Mojave popcornflower
Plagiobothrys leptocladus (Greene) I.M. Johnst.	finebranched popcornflower
Plagiobothrys nothofulvus (A. Gray) A. Gray	rusty 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 torreyi (A. Gray) A. Gray	Torrey's Popcornflower
Plagiobothrys trachycarpus (A. Gray) I.M. Johnst.	roughfruit popcornflower
Plagiobothrys uncinatus J.T. Howell	Salinas Valley popcornflower
Plagiobothrys undulatus (Piper) I.M. Johnst.	artist's popcornflower
Planodes virginicum (L.) Greene	Virginia Winged Rockcress
Plantago bigelovii A. Gray	Coast Plantain
Plantago coronopus L.	Buckhorn Plantain
Plantago erecta Morris	dotseed plantain
Plantago eriopoda Torr.	redwool plantain
Plantago firma Kunze ex Walp.	Chilean plantain
Plantago lanceolata L.	Narrowleaf Plantain
Plantago major L.	Common Plantain
Plantago maritima L.	goose tongue
Plantago ovata Forssk.	desert Indianwheat
Plantago pusilla Nutt.	Dwarf Plantain
Plantago subnuda Pilg.	tall coastal plantain
Plantago virginica L.	Virginia Plantain
Platanthera elegans Lindl.	Hillside Rein Orchid
Platanthera sparsiflora (S. Watson) Schltr.	sparse-flowered bog orchid
Platanthera yosemitensis Colwell, Sheviak & P.E. Moore	Yosemite Bog Orchid
Platanus ×hispanica Mill. ex Münchh.	London Planetree
Platanus racemosa Nutt.	California sycamore
Platystemon californicus Benth.	Creamcups
Platystigma lineare Benth.	Narrowleaf Queen Poppy
Plectritis ciliosa (Greene) Jeps.	longspur seablush
Plectritis congesta (Lindl.) DC.	shortspur seablush
Plectritis macrocera Torr. & A. Gray	Longhorn Plectritis
Pleiacanthus spinosus (Nutt.) Rydb.	Thorn Skeletonweed
Pleuricospora fimbriolata A. Gray	fringed pinesap
Pleuropogon californicus (Nees) Benth. ex Vasey	annual semaphoregrass
Pluchea odorata (L.) Cass.	sweetscent
Pluchea sericea (Nutt.) Coville	Arrowweed
Poa annua L.	annual bluegrass
Poa bigelovii Vasey & Scribn.	Bigelow's bluegrass
Poa bolanderi Vasey	Bolander's bluegrass
Poa bulbosa L.	bulbous bluegrass
Poa compressa L.	Canada 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 infirma Kunth	weak bluegrass
Poa keckii Soreng	Keck's Bluegrass
Poa leptocoma Trin.	marsh bluegrass
Poa lettermanii Vasey	Letterman's bluegrass
Poa palustris L.	Fowl Bluegrass
Poa pringlei Scribn.	Pringle's Bluegrass
Poa secunda J. Presl	Sandberg Bluegrass
Poa sierrae J.T. Howell	Sierra Bluegrass
Poa stebbinsii Soreng	Stebbin's Bluegrass
Poa tenerrima Scribn.	Delicate Bluegrass
Poa trivialis L.	Rough Bluegrass
Poa wheeleri Vasey	Wheeler's Bluegrass
Podistera nevadensis (A. Gray) S. Watson	Nevada Podistera
Pogogyne douglasii Benth.	Douglas' Mesamint
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 eximium Greene	Skypilot
Polemonium micranthum Benth.	annual polemonium
Polemonium occidentale Greene	western polemonium
Polemonium pulcherrimum Hook.	Jacob's-ladder
Polycarpon depressum Nutt.	California manyseed
Polycarpon tetraphyllum (L.) L.	fourleaf manyseed
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 marinense T.R. Mert. & P.H. Raven	Marin knotweed
Polygonum minimum S. Watson	broadleaf knotweed
Polygonum parryi Greene	Parry's knotweed
Polygonum patulum M. Bieb.	Bellard's smartweed
Polygonum pensylvanicum L.	Pennsylvania Smartweed
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
Polypogon australis Brongn.	Chilean rabbitsfoot grass
Polypogon elongatus Kunth	streambank rabbitsfoot grass
Polypogon imberbis (Phil.) Johow	beardless 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 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 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 nigra L.	Lombardy poplar
Populus tremuloides Michx.	Quaking Aspen
Porophyllum gracile Benth.	slender poreleaf
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 illinoensis Morong	Illinois Pondweed
Potamogeton natans L.	floating pondweed
Potamogeton nodosus Poir.	longleaf 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 campestris (M.E.Jones) Jeps.	Field Mousetail
Potentilla congdonis (Rydb.) Mosyakin & Shiyan	Congdon's False Horkelia
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 grayi S. Watson	Gray's Cinquefoil
Potentilla lycopodioides (A.Gray) Baill. ex J.T.Howell	Clubmoss Mousetail
Potentilla millefolia Rydb.	Cutleaf Cinquefoil
Potentilla muirii (A.Gray) Greene	Granite Mousetail
Potentilla norvegica L.	Rough Cinquefoil
Potentilla nubigena Greene	Dwarf Mousetail
Potentilla parryi (Greene) Greene	Parry Horkelia
Potentilla pensylvanica L.	Pennsylvania cinquefoil
Potentilla pseudosericea Rydb.	Silky Cinquefoil
Potentilla purpurascens (S.Watson) Greene	Purple False Horkelia
Potentilla recta L.	sulphur cinquefoil
Potentilla reptans L.	creeping cinquefoil
Potentilla rivalis Nutt.	Brook Cinquefoil
Potentilla saxosa Lemmon & S.A.Lemmon ex Greene	Rock Mousetail
Potentilla sericoleuca (Rydb.) J.T.Howell	Plumas Mousetail
Potentilla shockleyi (S.Watson) Jeps.	Sky Mousetail
Potentilla tularensis J.T.Howell	Kern Plateau Horkelia
Potentilla unguiculata (A.Gray) Hook.f.	Yosemite Mousetail
Potentilla wheeleri S. Watson	Kern cinquefoil
Prenanthella exigua (A. Gray) Rydb.	brightwhite
Primula clevelandii (Greene) A.R.Mast & Reveal	Padre's Shootingstar
Primula fragrans A.R.Mast & Reveal	Scented Shootingstar
Primula hendersonii (A.Gray) A.R.Mast & Reveal	Mosquito Bills
Primula jeffreyi (Van Houtte) A.R.Mast & Reveal	Sierra Shootingstar
Primula subalpina (Eastw.) A.R.Mast & Reveal	Sierra Shootingstar
Primula suffrutescens A. Gray	Sierra Primrose
Primula tetrandra (Suksd.) A.R.Mast & Reveal	Alpine Shootingstar
Proboscidea louisianica (Mill.) Thell.	Ram's Horn
Proboscidea parviflora (Wooton) Wooton & Standl.	Doubleclaw
Prosartes hookeri Torr.	drops-of-gold
Prosopis glandulosa Torr.	Honey Mesquite
Prosopis pubescens Benth.	screwbean mesquite
Prosopis velutina Wooton	velvet mesquite
Prunella vulgaris L.	Common Selfheal
Prunus andersonii A. Gray	Desert Peach
Prunus armeniaca L.	apricot
Prunus avium (L.) L.	Sweet Cherry
Prunus caroliniana Aiton	Carolina Laurelcherry
Prunus cerasifera Ehrh.	cherry plum
Prunus domestica L.	European plum
Prunus dulcis (Mill.) D.A. Webb	sweet almond
Prunus emarginata (Douglas ex Hook.) D. Dietr.	bitter cherry
Prunus fasciculata (Torr.) A. Gray	desert almond
Prunus ilicifolia (Nutt. ex Hook. & Arn.) D. Dietr.	hollyleaf cherry
Prunus lusitanica L.	Portugal laurel
Prunus mahaleb L.	Mahaleb Cherry
Prunus persica (L.) Batsch	Peach
Prunus subcordata Benth.	Klamath plum
Prunus virginiana L.	Chokecherry
Psathyrotes annua (Nutt.) A. Gray	annual psathyrotes
Psathyrotes ramosissima (Torr.) A. Gray	velvet turtleback
Pseudobahia bahiifolia (Benth.) Rydb.	Hartweg's Golden Sunburst
Pseudobahia heermannii (Durand) Rydb.	foothill sunburst
Pseudobahia peirsonii Munz	San Joaquin Adobe Sunburst
Pseudognaphalium biolettii Anderb.	two-color rabbit-tobacco
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
Pseudosasa japonica (Siebold & Zucc. ex Steud.) Makino ex Nakai	Arrow Bamboo
Pseudostellaria jamesiana (Torr.) W.A. Weber & R.L. Hartm.	tuber starwort
Pseudotsuga macrocarpa (Vasey) Mayr	bigcone Douglas-fir
Pseudotsuga menziesii (Mirb.) Franco	Douglas Fir
Psilocarphus brevissimus Nutt.	short woollyheads
Psilocarphus oregonus Nutt.	Oregon woollyheads
Psilocarphus tenellus Nutt.	slender woollyheads
Psorothamnus arborescens (Torr. ex A. Gray) Barneby	Mojave indigobush
Psorothamnus fremontii (Torr. ex A. Gray) Barneby	Fremont's dalea
Ptelea crenulata Greene	California hoptree
Pteridium aquilinum (L.) Kuhn	western brackenfern
Pteris cretica L.	Cretan brake
Pterocarya stenoptera C. DC.	Chinese wingnut
Pterospora andromedea Nutt.	woodland pinedrops
Pterostegia drymarioides Fisch. & C.A. Mey.	woodland pterostegia
Ptilagrostiella kingii (Bol.) Romasc	Sierra False Needlegrass
Puccinellia distans (Jacq.) Parl.	weeping alkaligrass
Puccinellia lemmonii (Vasey) Scribn.	Lemmon's alkaligrass
Puccinellia nutkaensis (J. Presl) Fernald & Weath.	Nootka Alkaligrass
Puccinellia nuttalliana (Schult.) Hitchc.	Nuttall's Alkaligrass
Puccinellia parishii Hitchc.	bog alkaligrass
Puccinellia simplex Scribn.	California alkaligrass
Pulsatilla occidentalis (S. Watson) Freyn	white pasqueflower
Punica granatum L.	pomegranate
Purshia glandulosa Curran	desert bitterbrush
Purshia tridentata (Pursh) DC.	Antelope Bitterbrush
Pycnanthemum californicum Torr. ex Durand	Sierra mint
Pyracantha angustifolia (Franch.) C.K. Schneid.	narrowleaf firethorn
Pyracantha crenulata (D. Don) Roem.	Nepalese 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 apargioides (A. Gray) Greene	Alpineflames
Pyrrocoma lucida (D.D. Keck) Kartesz & Gandhi	Sticky Goldenweed
Pyrrocoma racemosa (Nutt.) Torr. & A. Gray	clustered goldenweed
Pyrrocoma uniflora (Hook.) Greene	Plantain Goldenweed
Pyrus calleryana Decne.	Callery Pear
Pyrus communis L.	Common Pear
Quercus ×alvordiana Eastw.	Alvord Oak
Quercus agrifolia Née	California live oak
Quercus berberidifolia Liebm.	Scrub Oak
Quercus chrysolepis Liebm.	Canyon Live Oak
Quercus cornelius-mulleri Nixon & Steele	Muller 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 ilex L.	holly oak
Quercus john-tuckeri Nixon & C.H. Mull.	Tucker 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
Rafinesquia neomexicana A. Gray	New Mexico plumeseed
Raillardella argentea (A. Gray) A. Gray	Silky Raillardella
Raillardella scaposa (A. Gray) A. Gray	Stem Raillardella
Ranunculus alismifolius Geyer ex Benth.	plantainleaf buttercup
Ranunculus aquatilis L.	white water crowfoot
Ranunculus arvensis L.	corn buttercup
Ranunculus bonariensis Poir.	Carter's Buttercup
Ranunculus californicus Benth.	California buttercup
Ranunculus canus Benth.	Sacramento Valley buttercup
Ranunculus cymbalaria Pursh	Alkali Buttercup
Ranunculus eschscholtzii Schltdl.	Eschscholtz's Buttercup
Ranunculus flammula L.	greater creeping spearwort
Ranunculus glaberrimus Hook.	sagebrush buttercup
Ranunculus hebecarpus Hook. & Arn.	delicate buttercup
Ranunculus lobbii (Hiern.) A. Gray	Lobb's buttercup
Ranunculus longirostris Godr.	Longbeak Buttercup
Ranunculus muricatus L.	spinyfruit buttercup
Ranunculus occidentalis Nutt.	western buttercup
Ranunculus orthorhynchus Hook.	straightbeak 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 testiculatus Crantz	Curveseed Butterwort
Ranunculus trichophyllus Chaix	threadleaf crowfoot
Ranunculus uncinatus D. Don ex G. Don	woodland buttercup
Raphanus raphanistrum L.	wild radish
Raphanus sativus L.	cultivated radish
Ravenella sharsmithiae (Morin) Morin	Mt. Hamilton Bellflower
Reseda alba L.	white upright mignonette
Reseda luteola L.	weld
Reynoutria sachalinensis (F.Schmidt) Nakai	Giant Knotweed
Rhamnus alnifolia L'Hér.	alderleaf buckthorn
Rhamnus crocea Nutt.	Redberry Buckthorn
Rhamnus ilicifolia Kellogg	hollyleaf redberry
Rhinotropis californica (Nutt.) J.R.Abbott	California Milkwort
Rhinotropis cornuta (Kellogg) J.R.Abbott	Sierra Milkwort
Rhodiola integrifolia Raf.	ledge stonecrop
Rhododendron columbianum (Piper) Harmaja	Western Labrador Tea
Rhododendron occidentale (Torr. & A. Gray) A. Gray	western azalea
Rhus aromatica Aiton	Fragrant Sumac
Rhus ovata S. Watson	sugar sumac
Rhus trilobata Nutt.	Skunkbush Sumac
Rhynchospora alba (L.) Vahl	White Beaksedge
Rhynchospora californica Gale	California beaksedge
Rhynchospora capitellata (Michx.) Vahl	Brownish Beaksedge
Ribes amarum McClatchie	bitter gooseberry
Ribes aureum Pursh	Golden Currant
Ribes binominatum A. Heller	Ground Gooseberry
Ribes californicum Hook. & Arn.	hillside gooseberry
Ribes cereum Douglas	wax currant
Ribes divaricatum Douglas	Spreading Gooseberry
Ribes inerme Rydb.	whitestem gooseberry
Ribes lacustre (Pers.) Poir.	prickly currant
Ribes lasianthum Greene	Alpine Gooseberry
Ribes lobbii A. Gray	Gummy Gooseberry
Ribes malvaceum Sm.	chaparral currant
Ribes menziesii Pursh	canyon gooseberry
Ribes montigenum McClatchie	gooseberry currant
Ribes nevadense Kellogg	Sierra currant
Ribes quercetorum Greene	rock gooseberry
Ribes roezlii Regel	Sierra gooseberry
Ribes roezlii var. cruentum (Greene) Rehder	Shinyleaf Currant
Ribes sanguineum Pursh	redflower currant
Ribes tularense (Coville) Fedde	Tulare Gooseberry
Ribes velutinum Greene	desert gooseberry

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