Orange County

Showing 901–950 of 1,336.

• 
  Oenothera elata Kunth Native OEEL

  Hooker's evening primrose · Onagraceae
• 
  Oenothera elata Kunth ssp. hirsutissima (A. Gray ex S. Watson) W. Dietr. Native OEELH

  Hooker's evening primrose · Onagraceae
• 
  Oenothera elata Kunth ssp. hookeri (Torr. & A. Gray) W. Dietr. & W.L. Wagner Native OEELH2

  Hooker's evening primrose · Onagraceae
• 
  Oenothera sinuosa W.L. Wagner & Hoch Native OESI3

  wavyleaf beeblossom · Onagraceae
• 
  Oenothera speciosa Nutt. Native OESP2

  pinkladies · Onagraceae
• 
  Oenothera suffrutescens (Ser.) W.L. Wagner & Hoch Native OESU3

  scarlet beeblossom · Onagraceae
• ⚘
  Oenothera xerogaura W.L. Wagner & Hoch Native OEXE

  Drummond's beeblossom · Onagraceae
• 
  Oligomeris linifolia (Vahl) J.F. Macbr. Native OLLI

  lineleaf whitepuff · Resedaceae
• 
  Oncosiphon piluliferum (L. f.) Källersjö Introduced ONPI

  stinknet · Asteraceae
• 
  Ophioglossum californicum Prantl Native OPCA8

  California adderstongue · Ophioglossaceae
• 
  Opuntia littoralis (Engelm.) Cockerell Native OPLI3

  coastal pricklypear · Cactaceae
• 
  Opuntia littoralis (Engelm.) Cockerell var. littoralis Native OPLIL3

  coastal pricklypear · Cactaceae
• 
  Opuntia oricola Philbrick Native OPOR

  chaparral pricklypear · Cactaceae
• ⚘
  Opuntia ×occidentalis Engelm. & J.M. Bigelow (pro sp.) [littoralis × (engelmannii × phaeacantha)] Native OPOC2

  pricklypear · Cactaceae
• ⚘
  Opuntia ×vaseyi (J.M. Coult.) Britton & Rose [littoralis × phaeacantha] Native OPVA4

  Vasey's coastal pricklypear · Cactaceae
• 
  Osmadenia tenella Nutt. Native OSTE

  false rosinweed · Asteraceae
• 
  Osmorhiza brachypoda Torr. Native OSBR

  California sweetcicely · Apiaceae
• 
  Oxalis albicans Kunth Native OXAL

  radishroot woodsorrel · Oxalidaceae
• 
  Oxalis albicans Kunth ssp. californica (Abrams) Eiten Native OXALC

  California woodsorrel · Oxalidaceae
• 
  Oxalis pes-caprae L. Introduced OXPE

  Bermuda buttercup · Oxalidaceae
• 
  Oxytheca trilobata A. Gray Native OXTR2

  threelobe oxytheca · Polygonaceae
• 
  Paeonia californica Nutt. Native PACA2

  California peony · Paeoniaceae
• 
  Pallenis maritima Greuter Introduced PAMA28

  estrella de mar · Asteraceae
• 
  Papaver californicum A. Gray Native PACA9

  western poppy · Papaveraceae
• 
  Parapholis incurva (L.) C.E. Hubbard Introduced PAIN

  curved sicklegrass · Poaceae
• 
  Parietaria hespera Hinton Native PAHE5

  rillita pellitory · Urticaceae
• 
  Parietaria hespera Hinton var. hespera Native PAHEH

  rillita pellitory · Urticaceae
• 
  Parietaria judaica L. Introduced PAJU

  spreading pellitory · Urticaceae
• 
  Paspalum dilatatum Poir. Introduced PADI3

  dallisgrass · Poaceae
• 
  Paspalum distichum L. Native PADI6

  knotgrass · Poaceae
• 
  Paspalum vaginatum Sw. Native PAVA

  seashore paspalum · Poaceae
• 
  Pectocarya linearis (Ruiz & Pav.) DC. Native PELI

  sagebrush combseed · Boraginaceae
• 
  Pectocarya linearis (Ruiz & Pav.) DC. ssp. ferocula (I.M. Johnst.) Thorne Native PELIF2

  sagebrush combseed · Boraginaceae
• 
  Pectocarya penicillata (Hook. & Arn.) A. DC. Native PEPE26

  sleeping combseed · Boraginaceae
• 
  Pedicularis densiflora Benth. ex Hook. Native PEDE

  Indian warrior · Scrophulariaceae
• 
  Pelargonium panduriforme Eckl. & Zeyh. Introduced PEPA52

  oakleaf garden geranium · Geraniaceae
• 
  Pelargonium quercifolium (L. f.) L'Hér. ex Aiton Introduced PEQU5

  oakleaf geranium · Geraniaceae
• ⚘
  Pelargonium ×domesticum L.H. Bailey (pro sp.) [cucullatum × grandiflorum] Introduced PEDO2

  regal pelargonium · Geraniaceae
• 
  Pellaea andromedifolia (Kaulf.) Fée Native PEAN2

  coffee cliffbrake · Pteridaceae
• 
  Pellaea mucronata (D.C. Eaton) D.C. Eaton Native PEMU

  birdfoot cliffbrake · Pteridaceae
• 
  Pellaea mucronata (D.C. Eaton) D.C. Eaton ssp. californica (Lemmon) Windham Native PEMUC2

  California cliffbrake · Pteridaceae
• 
  Pellaea mucronata (D.C. Eaton) D.C. Eaton ssp. mucronata Native PEMUM

  birdfoot cliffbrake · Pteridaceae
• 
  Pennisetum ciliare (L.) Link Introduced PECI

  buffelgrass · Poaceae
• 
  Pennisetum clandestinum Hochst. ex Chiov. Introduced PECL2

  kikuyugrass · Poaceae
• 
  Pennisetum glaucum (L.) R. Br. Introduced PEGL2

  pearl millet · Poaceae
• 
  Pennisetum setaceum (Forssk.) Chiov. Introduced PESE3

  crimson fountaingrass · Poaceae
• 
  Pennisetum villosum R. Br. ex Fresen. Introduced PEVI2

  feathertop · Poaceae
• 
  Penstemon centranthifolius (Benth.) Benth. Native PECE2

  scarlet bugler · Scrophulariaceae
• 
  Penstemon heterophyllus Lindl. Native PEHE3

  bunchleaf penstemon · Scrophulariaceae
• 
  Penstemon heterophyllus Lindl. ssp. australis (Munz & I.M. Johnst.) D.D. Keck Native PEHEA

  foothill beardtongue · Scrophulariaceae