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5330 Plants Found

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Ordered by scientific name.

Scientific Name	Common Name	†	Map‡
Phoradendron californicum Nutt.	mesquite mistletoe
Phoradendron capitellatum Torr. ex Trel.	downy mistletoe
Phoradendron hawksworthii (Wiens) Wiens	Hawksworth's mistletoe
Phoradendron juniperinum Engelm. ex A. Gray	Juniper Mistletoe
Phoradendron leucarpum (Raf.) Reveal & M.C. Johnst.	Oak Mistletoe
Phragmites americanus (Saltonst., P.M.Peterson & Soreng) A.Haines	American Common Reed
Phyla cuneifolia (Torr.) Greene	wedgeleaf
Phyla fruticosa (Mill.) Kennedy	diamondleaf fogfruit
Phyla lanceolata (Michx.) Greene	Lanceleaf Fogfruit
Phyllanthopsis arida (Warnock & M.C. Johnst.) Voronts. & Petra Hoffm.	Trans-Pecos maidenbush
Phyllanthus abnormis Baill.	Drummond's leaf-flower
Phyllanthus ericoides Torr.	heather leaf-flower
Phyllanthus polygonoides Nutt. ex Spreng.	smartweed leaf-flower
Phyllospadix torreyi S. Watson	Torrey's surfgrass
Physalis acutifolia (Miers) Sandw.	Sharpleaf Groundcherry
Physalis cinerascens (Dunal) Hitchc.	Smallflower Groundcherry
Physalis crassifolia Benth.	yellow nightshade groundcherry
Physalis hederifolia A. Gray	ivyleaf groundcherry
Physalis missouriensis Mack. & Bush	Missouri groundcherry
Physalis subulata Rydb.	Chihuahuan groundcherry
Physalis virginiana Mill.	Virginia groundcherry
Physaria acutifolia Rydb.	sharpleaf twinpod
Physaria chambersii Rollins	Chambers' Twinpod
Physaria didymocarpa (Hook.) A. Gray	common twinpod
Physaria douglasii subsp. tuplashensis (Rollins, K.A.Beck & Caplow) O'Kane & Al-Shehbaz	White Bluffs Bladderpod
Physaria fendleri (A.Gray) O'Kane & Al-Shehbaz	Fendler's Bladderpod
Physaria floribunda Rydb.	Pointtip Twinpod
Physaria geyeri (Hook.) A. Gray	Geyer's Twinpod
Physaria gordonii (A.Gray) O'Kane & Al-Shehbaz	Gordon's Bladderpod
Physaria grahamii Morton	Graham's Twinpod
Physaria kingii subsp. kingii (S.Watson) O'Kane & Al-Shehbaz	King Bladderpod
Physaria ludoviciana (Nutt.) O'Kane & Al-Shehbaz	Foothill Bladderpod
Physaria newberryi A. Gray	Newberry's Twinpod
Physaria rectipes (Wooton & Standl) O'Kane & Al-Shehbaz	Straight Bladderpod
Physaria reediana O'Kane & Al-Shehbaz	Reed's Twinpod
Physaria tenella (A.Nelson) O'Kane & Al-Shehbaz	Moapa Bladderpod
Physocarpus alternans (M.E. Jones) J.T. Howell	Dwarf Ninebark
Physocarpus capitatus (Pursh) Kuntze	Pacific ninebark
Physocarpus malvaceus (Greene) Kuntze	mallow ninebark
Physocarpus monogynus (Torr.) J.M. Coult.	mountain ninebark
Physostegia parviflora Nutt. ex A. Gray	Western False Dragonhead
Picea engelmannii Parry ex Engelm.	Engelmann Spruce
Picea glauca (Moench) Voss	White Spruce	✓
Picea pungens Engelm.	Blue Spruce
Picradeniopsis oppositifolia (Nutt.) Rydb. ex Britton	oppositeleaf bahia
Picradeniopsis woodhousei (A. Gray) Rydb.	Woodhouse's Bahia
Pilostyles thurberi A. Gray	Thurber's stemsucker
Pilularia americana A. Braun	American pillwort
Pinaropappus parvus S.F. Blake	small rocklettuce
Pinaropappus roseus (Less.) Less.	white rocklettuce
Pinus albicaulis Engelm.	Whitebark Pine
Pinus aristata Engelm.	bristlecone pine
Pinus arizonica Engelm.	Arizona pine
Pinus cembroides Zucc.	Mexican pinyon
Pinus contorta Douglas ex Loudon	Lodgepole Pine
Pinus edulis Engelm.	Twoneedle Pinyon
Pinus flexilis James	Limber Pine
Pinus jeffreyi Balf.	Jeffrey Pine
Pinus lambertiana Douglas	Sugar Pine
Pinus leiophylla Schiede & Deppe	Chihuahuan pine
Pinus longaeva D.K. Bailey	Great Basin Bristlecone Pine
Pinus monticola Douglas ex D. Don	Western White Pine
Pinus ponderosa Lawson & C. Lawson	Ponderosa Pine
Pinus quadrifolia Parl. ex Sudw.	Parry pinyon
Pinus remota (Little) D.K. Bailey & Hawksw.	papershell pinyon
Pinus strobiformis Engelm.	southwestern white pine
Piperia unalascensis (Spreng.) Rydb.	slender-spire orchid
Piptatheropsis exigua (Thurb.) Romasch., P.M. Peterson & R.J. Soreng	Little Ricegrass
Piptatheropsis micrantha "(Trin. & Rupr.) Romasch.	littleseed ricegrass
Piptochaetium fimbriatum (Kunth) Hitchc.	pinyon ricegrass
Piptochaetium pringlei (Beal) Parodi	Pringle's speargrass
Plagiobothrys arizonicus (A. Gray) Greene ex A. Gray	Arizona popcornflower
Plagiobothrys collinus (Phil.) I.M. Johnst.	Cooper's popcornflower
Plagiobothrys glomeratus A. Gray	Clustered Popcornflower
Plagiobothrys hispidus A. Gray	Cascade Popcornflower
Plagiobothrys jonesii A. Gray	Mojave popcornflower
Plagiobothrys leptocladus (Greene) I.M. Johnst.	finebranched popcornflower
Plagiobothrys mollis (A. Gray) I.M. Johnst.	soft popcornflower
Plagiobothrys nothofulvus (A. Gray) A. Gray	rusty popcornflower
Plagiobothrys pringlei Greene	Pringle's popcornflower
Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnst.	Scouler's popcornflower
Plagiobothrys stipitatus (Greene) I.M. Johnst.	stalked popcornflower
Plagiobothrys tenellus (Nutt. ex Hook.) A. Gray	Pacific popcornflower
Plantago argyrea Morris	Saltmeadow Plantain
Plantago erecta Morris	dotseed plantain
Plantago eriopoda Torr.	redwool plantain
Plantago helleri Small	Heller's plantain
Plantago hookeriana Fisch. & C.A. Mey.	California Plantain
Plantago ovata Forssk.	desert Indianwheat
Plantago patagonica Jacq.	Woolly Plantain
Plantago rhodosperma Decne.	redseed plantain
Plantago tweedyi A. Gray	Tweedy's Plantain
Plantago wrightiana Decne.	Wright's plantain
Platanthera aquilonis Sheviak	northern green orchid
Platanthera elegans Lindl.	Hillside Rein Orchid
Platanthera huronensis (Nutt.) Lindl.	Huron green orchid
Platanthera obtusata (Banks ex Pursh) Lindl.	bluntleaved orchid
Platanthera sparsiflora (S. Watson) Schltr.	sparse-flowered bog orchid
Platanthera stricta Lindl.	slender bog orchid
Platanthera tescamnis Sheviak & W.F. Jenn.	Intermountain Bog Orchid
Platanthera zothecina (Higgins & S.L. Welsh) Kartesz & Gandhi	Alcove Bog Orchid
Platanus wrightii S. Watson	Arizona sycamore
Plateilema palmeri (A. Gray) Cockerell	plateilema
Platyschkuhria integrifolia (A. Gray) Rydb.	basindaisy
Platystemon californicus Benth.	Creamcups
Plectocephalus americanus (Nutt.) D.Don	American Star-thistle
Plectritis ciliosa (Greene) Jeps.	longspur seablush
Plectritis macrocera Torr. & A. Gray	Longhorn Plectritis
Pleiacanthus spinosus (Nutt.) Rydb.	Thorn Skeletonweed
Pleopeltis polylepis (Roem. ex Kunze) T. Moore	redscale scaly polypody
Pleopeltis riograndensis (T. Wendt) Andrews & Windham	Rio Grande scaly polypody
Pleuraphis mutica Buckley	tobosagrass
Pleuraphis rigida Thurb.	big galleta
Pleurocoronis pluriseta (A. Gray) R.M. King & H. Rob.	bush arrowleaf
Pluchea odorata (L.) Cass.	sweetscent
Pluchea sericea (Nutt.) Coville	Arrowweed
Plumbago zeylanica L.	Doctorbush
Poa abbreviata R. Br.	short bluegrass
Poa alpina L.	Alpine Bluegrass
Poa arctica R. Br.	arctic bluegrass
Poa arida Vasey	Plains Bluegrass
Poa arnowiae Soreng	Wasatch Bluegrass
Poa bigelovii Vasey & Scribn.	Bigelow's bluegrass
Poa bolanderi Vasey	Bolander's bluegrass
Poa cusickii Vasey	Cusick's Bluegrass
Poa fendleriana (Steud.) Vasey	muttongrass
Poa glauca Vahl	Glaucous Bluegrass
Poa leibergii Scribn.	Leiberg's Bluegrass
Poa leptocoma Trin.	marsh bluegrass
Poa lettermanii Vasey	Letterman's bluegrass
Poa occidentalis Vasey	New Mexico bluegrass
Poa palustris L.	Fowl Bluegrass
Poa reflexa Vasey & Scribn. ex Vasey	Nodding Bluegrass
Poa secunda J. Presl	Sandberg Bluegrass
Poa stenantha Trin.	northern bluegrass
Poa strictiramea Hitchc.	Big Bend bluegrass
Poa wheeleri Vasey	Wheeler's Bluegrass
Podistera eastwoodiae (J.M. Coult. & Rose) Mathias & Constance	Eastwood's Podistera
Polanisia dodecandra (L.) DC.	redwhisker clammyweed
Polanisia jamesii (Torr. & A. Gray) Iltis	James' clammyweed
Polanisia uniglandulosa (Cav.) DC.	Mexican clammyweed
Polemonium brandegeei (A. Gray) Greene	Brandegee's Jacob's-ladder
Polemonium californicum Eastw.	moving polemonium
Polemonium chartaceum H. Mason	Mason's Jacob's-Ladder
Polemonium confertum A. Gray	Rocky Mountain Jacob's-Ladder
Polemonium foliosissimum A. Gray	towering Jacob's-ladder
Polemonium micranthum Benth.	annual polemonium
Polemonium occidentale Greene	western polemonium
Polemonium pauciflorum S. Watson	fewflower Jacob's-ladder
Polemonium pectinatum Greene	Washington Jacob's-ladder
Polemonium pulcherrimum Hook.	Jacob's-ladder
Polemonium viscosum Nutt.	Sticky Polemonium
Poliomintha glabrescens A. Gray	leafy rosemary-mint
Poliomintha incana (Torr.) A. Gray	frosted mint
Polyctenium fremontii (S. Watson) Greene	desert combleaf
Polygonatum biflorum (Walter) Elliott	Smooth Solomon's Seal
Polygonum achoreum S.F. Blake	leathery knotweed
Polygonum douglasii Greene	Douglas' knotweed
Polygonum erectum L.	Erect Knotweed
Polygonum heterosepalum M. Peck & Ownbey	Oddsepal Knotweed
Polygonum minimum S. Watson	broadleaf knotweed
Polygonum polygaloides Wall. ex Meisn.	Milkwort Knotweed
Polygonum ramosissimum Michx.	Bushy Knotweed
Polypodium hesperium Maxon	western polypody
Polypogon elongatus Kunth	streambank rabbitsfoot grass
Polypogon interruptus Kunth	ditch rabbitsfoot grass
Polystichum kruckebergii W.H. Wagner	Kruckeberg's Hollyfern
Polystichum lonchitis (L.) Roth	Northern Hollyfern
Polystichum munitum (Kaulf.) C. Presl	western swordfern
Polystichum scopulinum (D.C. Eaton) Maxon	Mountain Hollyfern
Pomaria jamesii (Torr. & A. Gray) Walp.	James' holdback
Pomaria melanosticta S. Schauer	Parry's holdback
Populus angustifolia James	Narrowleaf Cottonwood
Populus balsamifera L.	Balsam Poplar
Populus deltoides W. Bartram ex Marshall	Eastern Cottonwood
Populus fremontii S. Watson	Fremont Cottonwood
Populus tremuloides Michx.	Quaking Aspen
Porophyllum gracile Benth.	slender poreleaf
Porophyllum greggii A. Gray	Gregg's poreleaf
Porophyllum pygmaeum Keil & J. Morefield	Dwarf Poreleaf
Porophyllum ruderale (Jacq.) Cass.	yerba porosa
Porophyllum scoparium A. Gray	Trans-Pecos poreleaf
Porterella carnosula (Hook. & Arn.) Torr.	Fleshy Porterella
Portulaca halimoides L.	silkcotton purslane
Portulaca pilosa L.	kiss me quick
Portulaca suffrutescens Engelm.	shrubby purslane
Potamogeton alpinus Balbis	alpine pondweed
Potamogeton amplifolius Tuck.	largeleaf pondweed
Potamogeton clystocarpus Fernald	little aguja pondweed
Potamogeton diversifolius Raf.	waterthread 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 praelongus Wulfen	whitestem pondweed
Potamogeton pusillus L.	small pondweed
Potamogeton richardsonii (Benn.) Rydb.	Richardson's pondweed
Potamogeton robbinsii Oakes	Robbins' Pondweed
Potamogeton strictifolius Benn.	narrowleaf pondweed
Potamogeton zosteriformis Fernald	flatstem pondweed
Potentilla baileyi (S.Watson) Greene	Bailey's Ivesia
Potentilla biennis Greene	biennial cinquefoil
Potentilla bipinnatifida Douglas ex Hook.	tansy cinquefoil
Potentilla concinna Richardson	elegant cinquefoil
Potentilla cottamii N.H. Holmgren	Pilot Range Cinquefoil
Potentilla crinita A. Gray	bearded cinquefoil
Potentilla cryptocaulis Clokey	Charleston Peak Mousetail
Potentilla effusa Douglas ex Lehm.	Branched Cinquefoil
Potentilla flabellifolia Hook. ex Torr. & A. Gray	high mountain cinquefoil
Potentilla gracilis Douglas ex Hook.	slender cinquefoil
Potentilla hippiana Lehm.	Woolly Cinquefoil
Potentilla hispidula (Rydb.) Jeps.	White Mountain Horkelia
Potentilla jaegeri (Munz & I.M.Johnst.) L.C.Wheeler	Jaeger's Mousetail
Potentilla kingii (S.Watson) Greene	King's Mousetail
Potentilla millefolia Rydb.	Cutleaf Cinquefoil
Potentilla morefieldii Ertter, nom. inq.	Morefield's Cinquefoil
Potentilla multisecta (S. Watson) Rydb.	Featherleaf Cinquefoil
Potentilla newberryi A. Gray	Newberry's cinquefoil
Potentilla nivea L.	Snow Cinquefoil
Potentilla norvegica L.	Rough Cinquefoil
Potentilla ovina Macoun ex J.M. Macoun	sheep cinquefoil
Potentilla pensylvanica L.	Pennsylvania cinquefoil
Potentilla plattensis Nutt.	Platte River cinquefoil
Potentilla pseudosericea Rydb.	Silky Cinquefoil
Potentilla pulcherrima Lehm.	beautiful cinquefoil
Potentilla rivalis Nutt.	Brook Cinquefoil
Potentilla sabulosa M.E.Jones	Intermountain Mousetail
Potentilla sericoleuca (Rydb.) J.T.Howell	Plumas Mousetail
Potentilla shockleyi (S.Watson) Jeps.	Sky Mousetail
Potentilla subjuga Rydb.	Colorado Cinquefoil
Potentilla subviscosa Greene	Navajo cinquefoil
Potentilla supina L.	Paradox Cinquefoil
Potentilla thurberi A. Gray	Scarlet Cinquefoil
Prenanthella exigua (A. Gray) Rydb.	brightwhite
Primula angustifolia Torr.	Alpine Primrose
Primula conjugens (Greene) A.R.Mast & Reveal	Bonneville Shootingstar
Primula cusickiana (A. Gray) A. Gray	Cusick's Primrose
Primula fragrans A.R.Mast & Reveal	Scented Shootingstar
Primula incana M.E. Jones	silvery primrose
Primula jeffreyi (Van Houtte) A.R.Mast & Reveal	Sierra Shootingstar
Primula latiloba (A.Gray) A.R.Mast & Reveal	White Shootingstar
Primula parryi A. Gray	Parry's Primrose
Primula pauciflora (Durand) A.R.Mast & Reveal	Darkthroat Shootingstar
Primula poetica (L.F.Hend.) A.R.Mast & Reveal	Poet's Shootingstar
Primula specuicola Rydb.	Cavedwelling Primrose
Primula tetrandra (Suksd.) A.R.Mast & Reveal	Alpine Shootingstar
Proatriplex pleiantha (W.A. Weber) Stutz & G.L. Chu	Mancos Shadscale
Proboscidea althaeifolia (Benth.) Decne.	desert unicorn-plant
Proboscidea parviflora (Wooton) Wooton & Standl.	Doubleclaw
Proboscidea sabulosa Correll	sanddune unicorn-plant
Proboscidea spicata Correll	New Mexico unicorn-plant
Prosartes hookeri Torr.	drops-of-gold
Prosartes trachycarpa S. Watson	roughfruit fairybells
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 emarginata (Douglas ex Hook.) D. Dietr.	Bitter Cherry
Prunus fasciculata (Torr.) A. Gray	desert almond
Prunus fremontii S. Watson	desert apricot
Prunus havardii (W. Wight) S.C. Mason	Havard's plum
Prunus ilicifolia (Nutt. ex Hook. & Arn.) D. Dietr.	hollyleaf cherry
Prunus minutiflora Engelm.	Texas almond
Prunus murrayana Palmer	Murray's plum
Prunus virginiana L.	Chokecherry
Psathyrotes annua (Nutt.) A. Gray	annual psathyrotes
Psathyrotes pilifera A. Gray	Hairybeast Turtleback
Psathyrotes ramosissima (Torr.) A. Gray	velvet turtleback
Psathyrotopsis scaposa (A. Gray) H. Rob.	naked turtleback
Pseudoclappia arenaria Rydb.	Trans-Pecos false clapdaisy
Pseudoclappia watsonii A. Powell & B.L. Turner	Watson's false clapdaisy
Pseudoeriocoma eminens (Cav.) Romasch.	Southwestern Needlegrass
Pseudognaphalium arizonicum (A. Gray) Anderb.	Arizona cudweed
Pseudognaphalium biolettii Anderb.	two-color rabbit-tobacco
Pseudognaphalium canescens (DC.) W.A. Weber	Wright's cudweed
Pseudognaphalium jaliscense (Greenm.) Anderb.	Jalisco rabbit-tobacco
Pseudognaphalium leucocephalum (A. Gray) Anderb.	white cudweed
Pseudognaphalium macounii (Greene) Kartesz	Macoun's cudweed
Pseudognaphalium pringlei (A. Gray) Anderb.	Pringle's cudweed
Pseudognaphalium viscosum (Kunth) W.A. Weber	winged cudweed
Pseudorontium cyathiferum (Benth.) Rothm.	dog's-mouth
Pseudostellaria jamesiana (Torr.) W.A. Weber & R.L. Hartm.	tuber starwort
Pseudotsuga menziesii (Mirb.) Franco	Douglas Fir
Psilactis asteroides A. Gray	New Mexico tansyaster
Psilactis brevilingulata Sch. Bip. ex Hemsl.	Trans-Pecos tansyaster
Psilactis tenuis S. Watson	slender tansyaster
Psilocarphus brevissimus Nutt.	short woollyheads
Psilocarphus elatior (A. Gray) A. Gray	meadow woollyheads
Psilocarphus oregonus Nutt.	Oregon woollyheads
Psilocarphus tenellus Nutt.	slender woollyheads
Psilostrophe bakeri Greene	Baker's Paperflower
Psilostrophe cooperi (A. Gray) Greene	whitestem paperflower
Psilostrophe sparsiflora (A. Gray) A. Nelson	Greenstem Paperflower
Psilostrophe tagetina (Nutt.) Greene	Woolly Paperflower
Psorothamnus arborescens (Torr. ex A. Gray) Barneby	Mojave indigobush
Psorothamnus emoryi (A. Gray) Rydb.	dyebush
Psorothamnus fremontii (Torr. ex A. Gray) Barneby	Fremont's dalea
Psorothamnus kingii (S. Watson) Barneby	King's Dalea
Psorothamnus polydenius (Torr. ex S. Watson) Rydb.	Nevada dalea
Psorothamnus schottii (Torr.) Barneby	Schott's dalea
Psorothamnus scoparius (A. Gray) Rydb.	broom dalea
Psorothamnus spinosus (A. Gray) Barneby	smoketree
Psorothamnus thompsoniae (Vail) S.L. Welsh & N.D. Atwood	Thompson's Dalea
Ptelea trifoliata L.	Common Hoptree
Pteridium aquilinum (L.) Kuhn	western brackenfern
Pterospora andromedea Nutt.	woodland pinedrops
Pterostegia drymarioides Fisch. & C.A. Mey.	woodland pterostegia
Puccinellia lemmonii (Vasey) Scribn.	Lemmon's 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
Pulsatilla patens (L.) Mill.	Eastern Pasqueflower
Purshia ericifolia (Torr. ex A. Gray) Henrickson	heath cliffrose
Purshia glandulosa Curran	desert bitterbrush
Purshia tridentata (Pursh) DC.	Antelope Bitterbrush
Pyrola asarifolia Michx.	Liverleaf Wintergreen
Pyrola chlorantha Sw.	Greenflowered Wintergreen
Pyrola elliptica Nutt.	waxflower shinleaf
Pyrola minor L.	snowline wintergreen
Pyrola picta Sm.	whiteveined wintergreen
Pyrrhopappus pauciflorus (D. Don) DC.	smallflower desert-chicory
Pyrrocoma apargioides (A. Gray) Greene	Alpineflames
Pyrrocoma carthamoides Hook.	largeflower goldenweed
Pyrrocoma clementis Rydb.	Tranquil Goldenweed
Pyrrocoma crocea (A. Gray) Greene	Curlyhead Goldenweed
Pyrrocoma hirta (A. Gray) Greene	tacky goldenweed
Pyrrocoma howellii (A.Gray) Greene	Narrowleaf Goldenhead
Pyrrocoma insecticruris L.F. Hend.	Wholeleaf Goldenweed
Pyrrocoma lanceolata (Hook.) Greene	lanceleaf goldenweed
Pyrrocoma liatriformis Greene	smallhead goldenweed
Pyrrocoma racemosa (Nutt.) Torr. & A. Gray	clustered goldenweed
Pyrrocoma radiata Nutt.	Ray Goldenweed
Pyrrocoma uniflora (Hook.) Greene	Plantain Goldenweed
Quercus ×undulata Torr.	Wavyleaf Oak
Quercus ajoensis C.H. Mull.	Ajo Mountain scrub oak
Quercus arizonica Sarg.	Arizona white oak
Quercus carmenensis C.H. Mull.	Mexican oak
Quercus chihuahuensis Trel.	Chihuahuan oak
Quercus chrysolepis Liebm.	Canyon Live Oak
Quercus cornelius-mulleri Nixon & Steele	Muller oak
Quercus depressipes Trel.	Davis Mountain oak
Quercus emoryi Torr.	Emory oak
Quercus fusiformis Small	Texas Live Oak
Quercus gambelii Nutt.	Gambel Oak
Quercus graciliformis C.H. Mull.	Chisos oak
Quercus gravesii Sudw.	Chisos red oak
Quercus grisea Liebm.	Gray Oak
Quercus havardii Rydb.	Havard Oak
Quercus hinckleyi C.H. Mull.	Hinckley oak
Quercus hypoleucoides A. Camus	silverleaf oak
Quercus intricata Trel.	dwarf oak
Quercus laceyi Small	Lacey oak
Quercus mohriana Buckley ex Rydb.	Mohr Oak
Quercus muehlenbergii Engelm.	Chinquapin Oak	✓
Quercus palmeri Engelm.	Palmer oak
Quercus pungens Liebm.	pungent oak
Quercus robusta C.H. Mull.	robust oak
Quercus rugosa Née	netleaf oak
Quercus tardifolia C.H. Mull.	lateleaf oak
Quercus toumeyi Sarg.	Toumey oak
Quercus turbinella Greene	Sonoran scrub oak
Quercus vacciniifolia Kellogg	huckleberry oak
Quercus vaseyana Buckley	sandpaper oak
Quercus wislizeni A. DC.	interior live oak
Quincula lobata (Torr.) Raf.	Chinese lantern
Rafinesquia californica Nutt.	California plumeseed
Rafinesquia neomexicana A. Gray	New Mexico plumeseed
Raillardella argentea (A. Gray) A. Gray	Silky Raillardella
Ranunculus acriformis A. Gray	sharpleaf buttercup
Ranunculus adoneus A. Gray	Alpine Buttercup
Ranunculus alismifolius Geyer ex Benth.	plantainleaf buttercup
Ranunculus aquatilis L.	white water crowfoot
Ranunculus cardiophyllus Hook.	heartleaf buttercup
Ranunculus cymbalaria Pursh	Alkali Buttercup
Ranunculus egglestonii (Wooton & Standl.) Christenh. & Byng	Western Mousetail
Ranunculus eschscholtzii Schltdl.	Eschscholtz's Buttercup
Ranunculus eschscholtzii var. eximius (Greene) L.D.Benson	Tundra Buttercup
Ranunculus flabellaris Raf.	Yellow Water Buttercup
Ranunculus flammula L.	greater creeping spearwort
Ranunculus glaberrimus Hook.	sagebrush buttercup
Ranunculus gmelinii DC.	Gmelin's buttercup
Ranunculus hebecarpus Hook. & Arn.	delicate buttercup
Ranunculus hydrocharoides A. Gray	frogbit buttercup
Ranunculus hyperboreus Rottb.	High Northern Buttercup
Ranunculus inamoenus Greene	Graceful Buttercup
Ranunculus jovis A. Nelson	Utah Buttercup
Ranunculus longirostris Godr.	Longbeak Buttercup
Ranunculus macauleyi A. Gray	Rocky Mountain Buttercup
Ranunculus macounii Britton	Macoun's buttercup
Ranunculus occidentalis Nutt.	western buttercup
Ranunculus oreogenes Greene	Oregon Buttercup
Ranunculus orthorhynchus Hook.	straightbeak buttercup
Ranunculus pedatifidus Sm.	surefoot buttercup
Ranunculus pensylvanicus L. f.	Pennsylvania buttercup
Ranunculus petiolaris Kunth ex DC.	Latin American buttercup
Ranunculus pygmaeus Wahlenb.	Pygmy Buttercup
Ranunculus ranunculinus (Nutt.) Rydb.	Tadpole 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
Ratibida tagetes (James) Barnhart	green prairie coneflower
Rayjacksonia annua (Rydb.) R.L. Hartm. & M.A. Lane	viscid tansyaster
Rhamnus ilicifolia Kellogg	hollyleaf redberry
Rhamnus serrata Humb. & Bonpl. ex Schult.	sawleaf buckthorn
Rhamnus smithii Greene	Smith's buckthorn
Rhinotropis intermontana (T.Wendt) J.R.Abbott	Intermountain Milkwort
Rhinotropis lindheimeri (A.Gray) J.R.Abbott	Shrubby Milkwort
Rhinotropis maravillasensis (Correll) J.R.Abbott	Maravillas Milkwort
Rhinotropis nudata (Brandegee) J.R.Abbott	Smallflower Milkwort
Rhinotropis rimulicola (Steyerm.) J.R.Abbott	Steyermark's Milkwort
Rhinotropis subspinosa (S.Watson) J.R.Abbott	Spiny Milkwort
Rhodiola integrifolia Raf.	ledge stonecrop
Rhodiola rhodantha (A. Gray) H. Jacobsen	Redpod Stonecrop
Rhododendron columbianum (Piper) Harmaja	Western Labrador Tea
Rhus copallinum L.	Winged Sumac
Rhus integrifolia (Nutt.) W.H. Brewer & S. Watson	lemonade sumac
Rhus kearneyi F.A. Barkley	Kearney's sumac
Rhus lanceolata (A. Gray) Britton	prairie sumac
Rhus microphylla Engelm. ex A. Gray	littleleaf sumac
Rhus ovata S. Watson	sugar sumac
Rhus virens Lindh. ex A. Gray	evergreen sumac
Rhynchosia edulis Griseb.	Chihuahuan snoutbean
Rhynchosia senna Gillies ex Hook.	Texas snoutbean
Rhynchosida physocalyx (A. Gray) Fryxell	buffpetal
Rhynchospora colorata (L.) H. Pfeiffer	starrush whitetop
Rhysopterus plurijugus J.M.Coult. & Rose	Wrinklewing Springparsley
Ribes americanum Mill.	American Black Currant
Ribes aureum Pursh	Golden Currant
Ribes cereum Douglas	wax currant
Ribes hudsonianum Richardson	Northern Black Currant
Ribes indecorum Eastw.	whiteflower currant
Ribes inerme Rydb.	whitestem gooseberry
Ribes lacustre (Pers.) Poir.	prickly currant
Ribes laxiflorum Pursh	trailing black currant
Ribes leptanthum A. Gray	trumpet gooseberry
Ribes mescalerium Coville	Mescalero currant
Ribes montigenum McClatchie	gooseberry currant
Ribes niveum Lindl.	snow currant
Ribes oxyacanthoides L.	Canadian gooseberry
Ribes pinetorum Greene	orange gooseberry
Ribes quercetorum Greene	rock gooseberry
Ribes velutinum Greene	desert gooseberry
Ribes viscosissimum Pursh	sticky currant
Ribes wolfii Rothr.	Wolf's currant
Rigiopappus leptocladus A. Gray	wireweed
Rivina humilis L.	rougeplant
Robinia neomexicana A. Gray	New Mexico locust
Romanzoffia sitchensis Bong.	Sitka Mistmaiden
Romneya trichocalyx Eastw.	bristly Matilija poppy
Rorippa alpina (S. Watson) Rydb.	Alpine Yellowcress
Rorippa calycina (Engelm.) Rydb.	Persistent Sepal Yellowcress
Rorippa columbiae (Suksd. ex B.L. Rob.) Suksd. ex Howell	Columbian yellowcress
Rorippa curvipes Greene	bluntleaf yellowcress
Rorippa curvisiliqua (Hook.) Besser ex Britton	curvepod yellowcress
Rorippa palustris (L.) Besser	bog yellowcress
Rorippa ramosa Rollins	Durango yellowcress
Rorippa sinuata (Nutt.) Hitchc.	spreading yellowcress
Rorippa sphaerocarpa (A. Gray) Britton	roundfruit yellowcress
Rorippa tenerrima Greene	Modoc yellowcress
Rorippa teres (Michx.) R. Stuckey	southern marsh yellowcress
Rosa acicularis Lindl.	Prickly Rose
Rosa arkansana Porter	prairie rose
Rosa californica Cham. & Schltdl.	California wildrose
Rosa gymnocarpa Nutt.	dwarf rose
Rosa nutkana C. Presl	Nootka Rose
Rosa stellata Wooton	desert rose
Rosa woodsii Lindl.	Woods' Rose
Rotala ramosior (L.) Koehne	lowland rotala
Rubus arizonensis Focke	Arizona dewberry
Rubus flagellaris Willd.	Northern Dewberry
Rubus leucodermis Douglas ex Torr. & A. Gray	whitebark raspberry
Rubus neomexicanus A. Gray	New Mexico raspberry
Rubus nigerrimus (Greene) Rydb.	dark raspberry
Rubus parviflorus Nutt.	thimbleberry
Rubus strigosus Michx.	American Red Raspberry
Rubus ursinus Cham. & Schltdl.	California Blackberry
Rudbeckia laciniata L.	Cutleaf Coneflower	✓
Rudbeckia montana A. Gray	Montane Coneflower
Rudbeckia occidentalis Nutt.	western coneflower
Ruellia corzoi Tharp & F.A. Barkley	Corzo's wild petunia
Ruellia metziae Tharp	Metz's wild petunia
Ruellia nudiflora (Engelm. & A. Gray) Urb.	violet wild petunia
Ruellia occidentalis (A. Gray) Tharp & F.A. Barkley	western wild petunia
Ruellia parryi A. Gray	Parry's wild petunia
Rumex altissimus Alph. Wood	pale dock
Rumex densiflorus Osterh.	Denseflowered Dock
Rumex hymenosepalus Torr.	canaigre dock
Rumex occidentalis S. Watson	Western Dock
Rumex paucifolius Nutt.	alpine sheep sorrel
Rumex salicifolius Weinm.	Willow Dock
Rumex spiralis Small	Winged Dock
Rumex venosus Pursh	Veiny Dock
Rumex violascens Rech. f.	Violet Dock
Ruppia cirrhosa (Petagna) Grande	spiral ditchgrass

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