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4154 Plants Found

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Ordered by scientific name.

Scientific Name	Common Name	†	Map‡
Lythrum hyssopifolium L.	hyssop loosestrife
Lythrum portula (L.) D.A. Webb	spatulaleaf loosestrife
Lythrum salicaria L.	Purple Loosestrife
Lythrum tribracteatum Salzm. ex Spreng.	threebract loosestrife
Maclura pomifera (Raf.) C.K. Schneid.	Osage-orange	✓
Madia anomala Greene	plumpseeded madia
Madia citrigracilis D.D. Keck	Shasta Tarweed
Madia citriodora Greene	lemonscented madia
Madia elegans D. Don ex Lindl.	common madia
Madia exigua (Sm.) A. Gray	small tarweed
Madia glomerata Hook.	mountain tarweed
Madia gracilis (Sm.) D.D. Keck	Grassy Tarweed
Madia radiata Kellogg	golden madia
Madia sativa Molina	coast tarweed
Madia subspicata D.D. Keck	Slender Tarweed
Mahonia dictyota (Jeps.) Fedde	shining netvein barberry
Mahonia nervosa (Pursh) Nutt.	Cascade barberry
Mahonia pinnata (Lag.) Fedde	wavyleaf barberry
Mahonia repens (Lindl.) G. Don	creeping barberry
Maianthemum racemosum (L.) Link	Feathery False Lily of the Valley
Maianthemum stellatum (L.) Link	Starry False Lily of the Valley
Malacothamnus aboriginum (B.L. Rob.) Greene	Gray bushmallow
Malacothamnus fasciculatus (Nutt. ex Torr. & A. Gray) Greene	Mendocino bushmallow
Malacothamnus fremontii (Torr. ex A. Gray) Torr. ex Greene	Fremon's bushmallow
Malacothamnus marrubioides (Durand & Hilg.) Greene	Pinkflowered Bushmallow
Malacothrix californica DC.	California desertdandelion
Malacothrix clevelandii A. Gray	Cleveland's desertdandelion
Malacothrix coulteri Harv. & A. Gray	snake's head
Malacothrix floccifera (DC.) S.F. Blake	woolly desertdandelion
Malacothrix glabrata (A. Gray ex D.C. Eaton) A. Gray	smooth desertdandelion
Malacothrix saxatilis (Nutt.) Torr. & A. Gray	cliff desertdandelion
Malacothrix sonchoides (Nutt.) Torr. & A. Gray	sowthistle desertdandelion
Malus pumila Mill.	paradise apple
Malva neglecta Wallr.	Common Mallow
Malva nicaeensis All.	bull mallow
Malva parviflora L.	cheeseweed mallow
Malva sylvestris L.	High Mallow
Malvella leprosa (Ortega) Krapov.	alkali mallow
Marah fabaceus (Naud.) Naud. ex Greene	California manroot
Marah horridus (Congd.) S.T. Dunn	Sierra Manroot
Marah macrocarpus (Greene) Greene	Cucamonga manroot
Marah oreganus (Torr. ex S. Watson) Howell	coastal manroot
Marah watsonii (Cogn.) Greene	taw manroot
Marina parryi (Torr. & A. Gray) Barneby	Parry's false prairie-clover
Marrubium vulgare L.	Common Horehound
Marsilea oligospora Goodding	Pacific waterclover
Marsilea vestita Hook. & Grev.	hairy waterclover
Matricaria discoidea DC.	disc mayweed
Matricaria occidentalis Greene	valley mayweed
Matthiola incana (L.) W.T. Aiton	tenweeks stock
Matthiola longipetala (Vent.) DC.	Night Scented Stock
Maytenus boaria Molina	mayten
Meconella californica Torr. & Frém.	California fairypoppy
Meconella oregana Nutt.	white fairypoppy
Medicago arabica (L.) Huds.	spotted medick
Medicago lupulina L.	black medick
Medicago minima (L.) L.	little bur-clover
Medicago orbicularis (L.) Bartal.	blackdisk medick
Medicago polymorpha L.	burclover
Medicago praecox DC.	Mediterranean medick
Medicago sativa L.	Alfalfa
Medicago scutellata (L.) Mill.	snail medick
Melia azedarach L.	Chinaberrytree
Melica aristata Thurb. ex Bol.	Bearded Melicgrass
Melica bulbosa Geyer ex Porter & J.M. Coult.	oniongrass
Melica californica Scribn.	California melicgrass
Melica frutescens Scribn.	woody melicgrass
Melica fugax Bol.	Little Oniongrass
Melica geyeri Munro ex Bol.	Geyer's oniongrass
Melica harfordii Bol.	Harford's oniongrass
Melica imperfecta Trin.	Smallflower Melicgrass
Melica stricta Bol.	Rock Melicgrass
Melica subulata (Griseb.) Scribn.	Alaska oniongrass
Melica torreyana Scribn.	Torrey's melicgrass
Melilotus indicus (L.) All.	annual yellow sweetclover
Melilotus officinalis (L.) Lam.	Yellow sweetclover
Melissa officinalis L.	Lemon Balm
Menodora spinescens A. Gray	Spiny Menodora
Mentha ×piperita	Peppermint
Mentha aquatica L.	water mint
Mentha arvensis L.	Wild Mint
Mentha pulegium L.	pennyroyal
Mentha spicata L.	Spearmint
Mentha suaveolens Ehrh.	Apple Mint
Mentzelia affinis Greene	yellowcomet
Mentzelia albicaulis (Hook.) Torr. & A. Gray	whitestem blazingstar
Mentzelia congesta Nutt. ex Torr. & A. Gray	united blazingstar
Mentzelia crocea Kellogg	Sierra Blazingstar
Mentzelia dispersa S. Watson	bushy blazingstar
Mentzelia eremophila (Jeps.) H.J. Thomp. & Roberts	Pinyon Blazingstar
Mentzelia gracilenta Torr. & A. Gray	grass blazingstar
Mentzelia involucrata S. Watson	whitebract blazingstar
Mentzelia jonesii (Urb. & Gilg) H.J. Thomp. & Roberts	Jones' blazingstar
Mentzelia laevicaulis (Hook.) Torr. & A. Gray	Smoothstem Blazingstar
Mentzelia lindleyi Torr. & A. Gray	Lindley's blazingstar
Mentzelia micrantha (Hook. & Arn.) Torr. & A. Gray	San Luis blazingstar
Mentzelia montana (Davidson) Davidson	variegated-bract blazingstar
Mentzelia nitens Greene	shining blazingstar
Mentzelia obscura H.J. Thomp. & Roberts	Pacific blazingstar
Mentzelia pectinata Kellogg	San Joaquin blazingstar
Mentzelia tricuspis A. Gray	spinyhair blazingstar
Mentzelia tridentata (Davidson) H.J. Thomp. & Roberts	threetooth blazingstar
Mentzelia veatchiana Kellogg	Veatch's blazingstar
Menyanthes trifoliata L.	Buckbean
Mercurialis annua L.	annual mercury
Mertensia ciliata (James ex Torr.) G. Don	tall fringed bluebells
Mertensia oblongifolia (Nutt.) G. Don	oblongleaf bluebells
Mesembryanthemum crystallinum L.	Common Iceplant
Mesembryanthemum nodiflorum L.	Slenderleaf Iceplant
Micranthes californica (Greene) Small	California Saxifrage
Micranthes integrifolia (Hook.) Small	Wholeleaf Saxifrage
Micranthes odontoloma (Piper) A.Heller	Brook Saxifrage
Micranthes oregana (Howell) Small	Oregon Saxifrage
Micropus amphibolus A. Gray	Mt. Diablo cottonseed
Micropus californicus Fisch. & C.A. Mey.	q-tips
Microseris acuminata Greene	Sierra foothill silverpuffs
Microseris campestris Greene	San Joaquin silverpuffs
Microseris douglasii (DC.) Sch. Bip.	Douglas' silverpuffs
Microseris elegans Greene ex A. Gray	elegant silverpuffs
Microseris laciniata (Hook.) Sch. Bip.	cutleaf silverpuffs
Microseris nutans (Hook.) Sch. Bip.	nodding microseris
Microseris sylvatica (Benth.) Sch. Bip.	sylvan scorzonella
Microsteris gracilis (Hook.) Greene	slender phlox
Mimetanthe pilosa (Benth.) Greene	false monkeyflower
Mimulus androsaceus Curran ex Greene	rockjasmine monkeyflower
Mimulus angustatus (A. Gray) A. Gray	purplelip pansy monkeyflower
Mimulus bicolor Hartw. ex Benth.	yellow and white monkeyflower
Mimulus bigelovii (A. Gray) A. Gray	Bigelow's monkeyflower
Mimulus bolanderi A. Gray	Bolander's monkeyflower
Mimulus breviflorus Piper	shortflower monkeyflower
Mimulus breweri (Greene) Coville	Brewer's Monkeyflower
Mimulus cardinalis Douglas ex Benth.	scarlet monkeyflower
Mimulus congdonii B.L. Rob.	Congdon's monkeyflower
Mimulus douglasii (Benth.) A. Gray	brownies
Mimulus filicifolius Sexton, K.G. Ferris & Schoenig	Fern-Leaved Monkeyflower
Mimulus floribundus Lindl.	manyflowered monkeyflower
Mimulus guttatus DC.	Seep Monkeyflower
Mimulus kelloggii (Curran ex Greene) Curran ex A. Gray	Kellogg's monkeyflower
Mimulus latidens (A. Gray) Greene	broadtooth monkeyflower
Mimulus layneae (Greene) Jeps.	Layne's monkeyflower
Mimulus lewisii Pursh	purple monkeyflower
Mimulus moschatus Douglas ex Lindl.	muskflower
Mimulus nanus Hook. & Arn.	dwarf purple monkeyflower
Mimulus nudatus Curran ex Greene	bare monkeyflower
Mimulus palmeri A. Gray	Palmer's monkeyflower
Mimulus primuloides Benth.	primrose monkeyflower
Mimulus pulsiferae A. Gray	candelabrum monkeyflower
Mimulus rattanii A. Gray	Rattan's monkeyflower
Mimulus ringens L.	Allegheny monkeyflower
Mimulus rubellus A. Gray	little redstem monkeyflower
Mimulus suksdorfii A. Gray	Suksdorf's monkeyflower
Mimulus tilingii Regel	Tiling's Monkeyflower
Mimulus torreyi A. Gray	Torrey's monkeyflower
Mimulus tricolor Hartw. ex Lindl.	tricolor monkeyflower
Minuartia californica (A. Gray) Mattf.	California sandwort
Minuartia cismontana R.J. Meinke & P.F. Zika	cismontane minuartia
Minuartia douglasii (Fenzl ex Torr. & A. Gray) Mattf.	Douglas' stitchwort
Minuartia nuttallii (Pax) Briq.	Nuttall's sandwort
Minuartia pusilla (S. Watson) Mattf.	annual sandwort
Mirabilis greenei S. Watson	Greene's Four O'clock
Mirabilis jalapa L.	marvel of Peru
Mirabilis laevis (Benth.) Curran	desert wishbone-bush
Mirabilis multiflora (Torr.) A. Gray	Colorado four o'clock
Misopates orontium (L.) Raf.	linearleaf snapdragon
Moehringia macrophylla (Hook.) Fenzl	Largeleaf Sandwort
Moenchia erecta (L.) G. Gaertn., B. Mey. & Scherb.	Upright Chickweed
Mohavea breviflora Coville	Golden Desert-Snapdragon
Mollugo cerviana (L.) Ser.	threadstem carpetweed
Mollugo verticillata L.	Green Carpetweed
Moluccella laevis L.	shellflower
Monarda citriodora Cerv. ex Lag.	Lemon Beebalm
Monardella beneolens Shevock, Ertter & Jokerst	Sweet-Smelling Monardella
Monardella breweri A. Gray	Brewer's monardella
Monardella breweri subsp. lanceolata (A.Gray) A.C.Sanders & Elvin	Mustang Monardella
Monardella candicans Benth.	Sierra Monardella
Monardella douglasii Benth.	Douglas' monardella
Monardella exilis (A. Gray) Greene	Desert Monardella
Monardella linoides A. Gray	Flaxleaf Monardella
Monardella odoratissima Benth.	mountain monardella
Monardella odoratissima subsp. glauca (Greene) Epling	Pale Monardella
Monardella sheltonii (Torr.) Howell	Shelton's monardella
Monardella villosa Benth.	coyote mint
Monardella viridis Jeps.	green monardella
Moneses uniflora (L.) A. Gray	Single Delight
Monolopia congdonii (A. Gray) B.G. Baldw.	San Joaquin woollythread
Monolopia gracilens A. Gray	woodland monolopia
Monolopia lanceolata Nutt.	common monolopia
Monolopia major DC.	cupped monolopia
Monolopia stricta Crum	Crum's monolopia
Monoptilon bellidiforme Torr. & A. Gray ex A. Gray	Daisy Desertstar
Monoptilon bellioides (A. Gray) H.M. Hall	Mojave desertstar
Montia chamissoi (Ledeb. ex Spreng.) Greene	water minerslettuce
Montia diffusa (Nutt.) Greene	spreading minerslettuce
Montia fontana L.	Annual Water Minerslettuce
Montia linearis (Douglas ex Hook.) Greene	narrowleaf minerslettuce
Montia parvifolia (Moc. ex DC.) Greene	littleleaf minerslettuce
Morella californica (Cham.) Wilbur	California wax myrtle
Morus alba L.	White Mulberry
Mucronea californica Benth.	California spineflower
Mucronea perfoliata (A. Gray) A. Heller	perfoliate spineflower
Muhlenbergia andina (Nutt.) Hitchc.	foxtail muhly
Muhlenbergia asperifolia (Nees & Meyen ex Trin.) Parodi	Scratchgrass
Muhlenbergia filiformis (Thurb. ex S. Watson) Rydb.	pullup muhly
Muhlenbergia jonesii (Vasey) Hitchc.	Modoc Muhly
Muhlenbergia mexicana (L.) Trin.	Mexican Muhly
Muhlenbergia microsperma (DC.) Trin.	littleseed muhly
Muhlenbergia minutissima (Steud.) Swallen	Annual Muhly
Muhlenbergia montana (Nutt.) Hitchc.	mountain muhly
Muhlenbergia richardsonis (Trin.) Rydb.	mat muhly
Muhlenbergia rigens (Benth.) Hitchc.	deergrass
Muhlenbergia schreberi J.F. Gmel.	Nimblewill
Muilla coronata Greene	Crowned Muilla
Muilla maritima (Torr.) S. Watson	sea muilla
Muntingia calabura L.	strawberrytree
Muscari botryoides (L.) Mill.	common grape hyacinth
Myoporum laetum G. Forst.	ngaio tree
Myosotis discolor Pers.	changing forget-me-not
Myosotis laxa Lehm.	Bay Forget-me-not
Myosotis scorpioides L.	true 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
Myosurus sessilis S. Watson	vernal pool mousetail
Myrica hartwegii S. Watson	Sierra Bayberry
Myriophyllum aquaticum (Vell.) Verdc.	Parrot Feather Watermilfoil
Myriophyllum hippuroides Nutt. ex Torr. & A. Gray	western watermilfoil
Myriophyllum quitense Kunth	Andean watermilfoil
Myriophyllum sibiricum Kom.	shortspike watermilfoil
Myriophyllum spicatum L.	Eurasian watermilfoil
Myriophyllum verticillatum L.	whorl-leaf watermilfoil
Najas gracillima (A. Braun ex Engelm.) Magnus	slender waternymph
Najas graminea Delile	Ricefield Waternymph
Najas guadalupensis (Spreng.) Magnus	southern waternymph
Najas marina L.	spiny naiad
Nama aretioides (Hook. & Arn.) Brand	Ground Nama
Nama californicum (A. Gray) Bacon	California fiddleleaf
Nama demissum A. Gray	purplemat
Nama depressum Lemmon ex A. Gray	depressed fiddleleaf
Nama hispidum A. Gray	bristly nama
Nama rothrockii A. Gray	Rothrock's Fiddleleaf
Nama stenocarpum A. Gray	mud fiddleleaf
Nandina domestica Thunb.	sacred bamboo
Narcissus pseudonarcissus L.	daffodil
Narcissus tazetta L.	cream narcissus
Narthecium californicum Baker	California Bog Asphodel
Nassella cernua (Stebbins & R.M. Love) Barkworth	nodding needlegrass
Nassella lepida (Hitchc.) Barkworth	foothill needlegrass
Nassella manicata (Desv.) Barkworth	tropical needlegrass
Nassella pulchra (Hitchc.) Barkworth	purple needlegrass
Nassella tenuissima (Trin.) Barkworth	Finestem Needlegrass
Nassella viridula (Trin.) Barkworth	Green Needlegrass
Nasturtium officinale W.T. Aiton	watercress
Navarretia atractyloides (Benth.) Hook. & Arn.	hollyleaf pincushionplant
Navarretia breweri (A. Gray) Greene	Brewer's navarretia
Navarretia capillaris (Kellogg) Kuntze	miniature gilia
Navarretia cotulifolia (Benth.) Hook. & Arn.	cotulaleaf pincushionplant
Navarretia divaricata (Torr. ex A. Gray) Greene	divaricate navarretia
Navarretia eriocephala H. Mason	Hoary Pincushionplant
Navarretia filicaulis (Torr. ex A. Gray) Greene	threadstem pincushionplant
Navarretia heterandra H. Mason	Tehama pincushionplant
Navarretia intertexta (Benth.) Hook.	Needleleaf Navarretia
Navarretia jepsonii V. Bailey ex Jeps.	Jepson's pincushionplant
Navarretia leptalea (A. Gray) L.A. Johnson	Bridges' pincushionplant
Navarretia leucocephala Benth.	whitehead navarretia
Navarretia mellita Greene	honeyscented pincushionplant
Navarretia myersii Allen & Day	Myers' Pincushionplant
Navarretia nigelliformis Greene	adobe navarretia
Navarretia paradoxiclara L.A. Johnson & D. Gowen	Bright Navarretia
Navarretia paradoxinota L.A. Johnson & D. Gowen	paradox navarretia
Navarretia peninsularis Greene	Baja Pincushionplant
Navarretia prolifera Greene	Bur Pincushionplant
Navarretia prostrata (A. Gray) Greene	prostrate pincushionplant
Navarretia pubescens (Benth.) Hook. & Arn.	downy pincushionplant
Navarretia setiloba Coville	Paiute Mountain Pincushionplant
Navarretia squarrosa (Eschsch.) Hook. & Arn.	skunkbush
Navarretia subuligera Greene	awl-leaf pincushionplant
Navarretia tagetina Greene	marigold pincushionplant
Navarretia viscidula Benth.	sticky pincushionplant
Nelumbo lutea Willd.	American lotus
Nemacladus capillaris Greene	common threadplant
Nemacladus glanduliferus Jeps.	glandular threadplant
Nemacladus gracilis Eastw.	slender threadplant
Nemacladus interior (Munz) G.T. Robbins	Sierra threadplant
Nemacladus longiflorus A. Gray	longflower threadplant
Nemacladus montanus Greene	mountain threadplant
Nemacladus ramosissimus Nutt.	smallflower threadplant
Nemacladus rubescens Greene	desert threadplant
Nemacladus secundiflorus G.T. Robbins	onesided threadplant
Nemacladus sigmoideus G.T. Robbins	Sigmoid Threadplant
Nemacladus twisselmannii J.T. Howell	Twisselmann's Threadplant
Nemophila heterophylla Fisch. & C.A. Mey.	small baby blue eyes
Nemophila maculata Benth. ex Lindl.	Fivespot
Nemophila menziesii Hook. & Arn.	Baby Blue Eyes
Nemophila parviflora Douglas ex Benth.	smallflower nemophila
Nemophila pedunculata Douglas ex Benth.	littlefoot nemophila
Nemophila pulchella Eastw.	Eastwood's baby blue eyes
Nemophila spatulata Coville	Sierra baby blue eyes
Neogaerrhinum filipes (A. Gray) Rothm.	yellow twining snapdragon
Neogaerrhinum strictum (Hook. & Arn.) Rothm.	Kellogg snapdragon
Neomonolepis spathulata (A.Gray) Sukhor.	Beaver Povertyweed
Neostapfia colusana (Burtt Davy) Burtt Davy	Colusagrass
Neottia convallarioides (Sw.) Rich.	Broadlipped Twayblade
Nepeta cataria L.	Catnip
Nerium oleander L.	oleander
Nicolletia occidentalis A. Gray	Mojave Hole-in-the-Sand Plant
Nicotiana acuminata (Graham) Hook.	manyflower tobacco
Nicotiana alata Link & Otto	jasmine tobacco
Nicotiana attenuata Torr. ex S. Watson	Coyote Tobacco
Nicotiana glauca Graham	tree tobacco
Nicotiana quadrivalvis Pursh	Indian tobacco
Nicotiana tabacum L.	cultivated tobacco
Nigella damascena L.	devil in the bush
Nitrophila occidentalis (Moq.) S. Watson	boraxweed
Noccaea fendleri (A. Gray) Holub	Fendler's Pennycress
Nolina parryi S. Watson	Parry's beargrass
Nothocalais alpestris (A. Gray) K.L. Chambers	alpine lake false dandelion
Notholithocarpus densiflorus (Hook. & Arn.) Manos, Cannon & S.H.Oh	Tanoak
Nothoscordum gracile (Aiton) Stearn	slender false garlic
Nuphar polysepala Engelm.	Great Yellow Pond-Lily
Nuttallanthus texanus (Scheele) D.A. Sutton	Texas Toadflax
Nymphaea mexicana Zucc.	Yellow Waterlily
Nymphaea odorata Aiton	American white waterlily
Nymphoides peltata (S.G. Gmel.) Kuntze	yellow floatingheart
Odontostomum hartwegii Torr.	Hartweg's doll's-lily
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 californica (S. Watson) S. Watson	California evening primrose
Oenothera deltoides Torr. & Frém.	birdcage evening primrose
Oenothera elata Kunth	Hooker's evening primrose
Oenothera glazioviana Micheli	redsepal evening primrose
Oenothera laciniata Hill	Cutleaf Evening Primrose
Oenothera primiveris A. Gray	desert evening primrose
Oenothera sinuosa W.L. Wagner & Hoch	Wavyleaf Beeblossom
Oenothera speciosa Nutt.	Pink Evening Primrose
Oenothera suffrutescens (Moc. & Sessé ex Ser.) W.L.Wagner & Hoch	Scarlet Beeblossom
Oenothera villosa Thunb.	Hairy Evening Primrose
Oenothera xylocarpa Coville	Woodyfruit Evening Primrose
Olea europaea L.	Olive
Oligomeris linifolia (Vahl) J.F. Macbr.	lineleaf whitepuff
Onobrychis viciifolia Scop.	sainfoin
Onopordum acanthium L.	Scotch cottonthistle
Onopordum tauricum Willd.	bull cottonthistle
Ophioglossum californicum Prantl	California adderstongue
Opuntia basilaris Engelm. & J.M. Bigelow	beavertail pricklypear
Opuntia ficus-indica (L.) Mill.	Barbary fig
Opuntia phaeacantha Engelm.	tulip pricklypear
Opuntia polyacantha Haw.	plains pricklypear
Orcuttia inaequalis Hoover	San Joaquin Valley Orcutt Grass
Orcuttia pilosa Hoover	Hairy Orcutt Grass
Orcuttia tenuis Hitchc.	Slender Orcutt Grass
Orcuttia viscida (Hoover) J. Reeder	Sacramento Orcutt Grass
Oreocarya confertiflora Greene	Basin Yellow Perennial Cat's-Eye
Oreocarya humilis (A.Gray) Greene	Round-Spike Perennial Cat's-Eye
Oreocarya nubigena Greene	Sierran Perennial Cat's-Eye
Oreonana clementis (M.E. Jones) Jeps.	Pygmy Mountainparsley
Oreonana purpurascens Shevock & Constance	Purple Mountainparsley
Oreonana vestita (S. Watson) Jeps.	Woolly Mountainparsley
Oreostemma alpigenum (Torr. & A. Gray) Greene	tundra aster
Oreostemma elatum (Greene) Greene	Plumas Alpine Aster
Oreostemma peirsonii (Sharsm.) G.L. Nesom	Peirson's Aster
Orobanche bulbosa (A. Gray) G. Beck	chaparral broomrape
Orobanche californica Cham. & Schltdl.	California broomrape
Orobanche corymbosa (Rydb.) Ferris	flat-top broomrape
Orobanche fasciculata Nutt.	clustered broomrape
Orobanche parishii (Jeps.) Heckard	Parish's broomrape
Orobanche pinorum Geyer ex Hook.	conifer broomrape
Orobanche uniflora L.	oneflowered broomrape
Orobanche valida Jeps.	Rock Creek broomrape
Orobanche vallicola (Jeps.) Heckard	hillside broomrape
Orochaenactis thysanocarpha (A. Gray) Coville	California Mountainpincushion
Orthilia secunda (L.) House	sidebells wintergreen
Orthocarpus cuspidatus Greene	toothed owl's-clover
Orthocarpus imbricatus Torr. ex S. Watson	Mountain Owl's-Clover
Orthocarpus luteus Nutt.	yellow owl's-clover
Oryza sativa L.	rice
Osmadenia tenella Nutt.	false rosinweed
Osmorhiza berteroi DC.	sweetcicely
Osmorhiza brachypoda Torr.	California sweetcicely
Osmorhiza occidentalis (Nutt. ex Torr. & A. Gray) Torr.	western sweetroot
Ottelia alismoides (L.) Pers.	Duck Lettuce
Oxalis bowiei Lindl.	Red-Flower Woodsorrel
Oxalis corniculata L.	Creeping Woodsorrel
Oxalis hirta L.	tropical woodsorrel
Oxalis intermedia A. Rich.	West Indian woodsorrel
Oxalis oregana Nutt.	redwood-sorrel
Oxalis pes-caprae L.	Bermuda buttercup
Oxalis purpurea L.	purple woodsorrel
Oxalis radicosa A. Rich.	dwarf woodsorrel
Oxalis stricta L.	Common Yellow Oxalis
Oxybasis rubra (L.) S.Fuentes, Uotila & Borsch	Red Goosefoot
Oxypolis occidentalis J.M. Coult. & Rose	western cowbane
Oxyria digyna (L.) Hill	Alpine Mountainsorrel
Oxytheca perfoliata Torr. & A. Gray	roundleaf oxytheca
Packera breweri (Burtt Davy) W.A. Weber & Á. Löve	Brewer'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 ionophylla (Greene) W.A. Weber & Á. Löve	Tehachapi Ragwort
Packera layneae (Greene) W.A. Weber & Á. Löve	Layne's 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
Packera werneriifolia (A. Gray) W.A. Weber & Á. Löve	Hoary Groundsel
Paeonia brownii Douglas ex Hook.	Brown's peony
Palafoxia arida B.L. Turner & Morris	desert palafox
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 californicum A. Gray	western poppy
Papaver hybridum L.	round pricklyhead poppy
Papaver rhoeas L.	corn poppy
Papaver somniferum L.	opium poppy
Pappostipa speciosa (Trin. & Rupr.) Romasch.	Desert Needlegrass
Parapholis incurva (L.) C.E. Hubbard	Curved Sicklegrass
Paraserianthes lophantha (Willd.) I.C. Nielsen	plume albizia
Parentucellia viscosa (L.) Caruel	yellow glandweed
Parietaria judaica L.	spreading pellitory
Parietaria pensylvanica Muhl. ex Willd.	Pennsylvania Pellitory
Parkinsonia aculeata L.	Jerusalem Thorn
Parnassia fimbriata K.D. Koenig	Fringed Grass of Parnassus
Parnassia palustris L.	marsh grass of Parnassus
Paronychia ahartii Ertter	Ahart's Nailwort
Paronychia echinulata Chater	Eurasian Nailwort
Parthenocissus vitacea (Knerr) Hitchc.	Woodbine
Pascopyrum smithii (Rydb.) Á. Löve	Western Wheatgrass
Paspalum dilatatum Poir.	dallisgrass
Paspalum distichum L.	knotgrass
Paspalum notatum Flueggé	Bahiagrass
Paspalum urvillei Steud.	Vasey's grass
Passiflora caerulea L.	bluecrown passionflower
Passiflora tarminiana Coppens & V.E. Barney	banana passionflower
Pastinaca sativa L.	Wild Parsnip
Paxistima myrsinites (Pursh) Raf.	Oregon boxleaf
Pectocarya heterocarpa (I.M. Johnst.) I.M. Johnst.	Chuckwalla Combseed
Pectocarya linearis (Ruiz & Pav.) DC.	sagebrush combseed
Pectocarya penicillata (Hook. & Arn.) A. DC.	sleeping combseed
Pectocarya platycarpa (Munz & I.M. Johnst.) Munz & I.M. Johnst.	broadfruit combseed
Pectocarya pusilla (A. DC.) A. Gray	little combseed
Pectocarya recurvata I.M. Johnst.	curvenut combseed
Pectocarya setosa A. Gray	moth combseed
Pedicularis attollens A. Gray	Little Elephantshead
Pedicularis densiflora Benth. ex Hook.	Indian warrior
Pedicularis groenlandica Retz.	Elephanthead Lousewort
Pedicularis racemosa Douglas ex Benth.	Sickletop Lousewort
Pedicularis semibarbata A. Gray	pinewoods lousewort
Pediomelum californicum (S. Watson) Rydb.	California Indian breadroot
Peganum harmala L.	harmal peganum
Pelargonium grossularioides (L.) L'Hér. ex Aiton	gooseberry geranium
Pelargonium inquinans (L.) L'Hér. ex Aiton	scarlet 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
Pennisetum villosum R. Br. ex Fresen.	feathertop
Penstemon ×parishii A.Gray	Beardtongue
Penstemon anguineus Eastw.	Siskiyou Beardtongue
Penstemon azureus Benth.	Azure Penstemon
Penstemon caesius A. Gray	San Bernardino Beardtongue
Penstemon centranthifolius (Benth.) Benth.	scarlet bugler
Penstemon davidsonii Greene	Davidson's penstemon
Penstemon deustus Douglas ex Lindl.	Scabland Penstemon
Penstemon eatonii A. Gray	Firecracker Penstemon
Penstemon fruticiformis Coville	Death Valley Beardtongue
Penstemon gracilentus A. Gray	Slender Penstemon
Penstemon grinnellii Eastw.	Grinnell's beardtongue
Penstemon heterodoxus A. Gray	Sierra Beardtongue
Penstemon heterophyllus Lindl.	Bunchleaf Penstemon
Penstemon incertus Brandegee	Mojave Beardtongue
Penstemon labrosus (A. Gray) Hook. f.	San Gabriel Beardtongue
Penstemon laetus A. Gray	Mountain Blue Penstemon
Penstemon neotericus D.D. Keck	Plumas County Beardtongue
Penstemon newberryi A. Gray	Mountain Pride
Penstemon personatus D.D. Keck	Closethroat Beardtongue
Penstemon procerus Douglas ex Graham	littleflower penstemon
Penstemon purpusii Brandegee	Snow Mountain Beardtongue
Penstemon roezlii Regel	Roezl's Penstemon
Penstemon rostriflorus Kellogg	Bridge penstemon
Penstemon rupicola (Piper) Howell	Cliff Beardtongue
Penstemon rydbergii A. Nelson	Rydberg's Penstemon
Penstemon speciosus Douglas ex Lindl.	Royal Penstemon
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

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