California

• Alameda 06001
  1,856 taxa Open ↗
• Alpine 06003
  1,174 taxa Open ↗
• Amador 06005
  1,226 taxa Open ↗
• Butte 06007
  2,704 taxa Open ↗
• Calaveras 06009
  1,227 taxa Open ↗
• Colusa 06011
  1,330 taxa Open ↗
• Contra Costa 06013
  1,712 taxa Open ↗
• Del Norte 06015
  1,424 taxa Open ↗
• El Dorado 06017
  1,950 taxa Open ↗
• Fresno 06019
  2,373 taxa Open ↗

Showing 951–1,000 of 1,412 (introduced).

• ⚘
  Pelargonium ×hortorum L.H. Bailey (pro sp.) [inquinans × zonale] Introduced PEHO2

  zonal geranium · Geraniaceae 3 counties
• 
  Pennisetum ciliare (L.) Link Introduced PECI

  buffelgrass · Poaceae 2 counties
• 
  Pennisetum clandestinum Hochst. ex Chiov. Introduced PECL2

  kikuyugrass · Poaceae 13 counties
• 
  Pennisetum glaucum (L.) R. Br. Introduced PEGL2

  pearl millet · Poaceae 36 counties
• 
  Pennisetum latifolium Spreng. Introduced PELA5

  Uruguayan fountaingrass · Poaceae 2 counties
• 
  Pennisetum nervosum (Nees) Trin. Introduced PENE4

  bentspike fountaingrass · Poaceae 1 county
• 
  Pennisetum setaceum (Forssk.) Chiov. Introduced PESE3

  crimson fountaingrass · Poaceae 12 counties
• 
  Pennisetum villosum R. Br. ex Fresen. Introduced PEVI2

  feathertop · Poaceae 12 counties
• 
  Pentaglottis sempervirens (L.) Tausch ex L.H. Bailey Introduced PESE10

  evergreen bugloss · Boraginaceae 1 county
• ⚘
  Pericallis hybrida B. Nord. Introduced PEHY13

  common ragwort · Asteraceae 2 counties
• 
  Petrorhagia dubia (Raf.) G. López & Romo Introduced PEDU2

  hairypink · Caryophyllaceae 15 counties
• 
  Petrorhagia nanteuilii (Burnat) P.W. Ball & Heywood Introduced PENA2

  proliferous pink · Caryophyllaceae 1 county
• 
  Petrorhagia prolifera (L.) P.W. Ball & Heywood Introduced PEPR4

  childing pink · Caryophyllaceae 2 counties
• 
  Petroselinum crispum (Mill.) Nyman ex A.W. Hill Introduced PECR2

  parsley · Apiaceae 8 counties
• 
  Petunia axillaris (Lam.) Britton, Sterns & Poggenb. Introduced PEAX

  large white petunia · Solanaceae 1 county
• 
  Petunia integrifolia (Hook.) Schinz & Thell. Introduced PEIN5

  violetflower petunia · Solanaceae 3 counties
• 
  Phalaris aquatica L. Introduced PHAQ

  bulbous canarygrass · Poaceae 35 counties
• 
  Phalaris brachystachys Link Introduced PHBR3

  shortspike canarygrass · Poaceae 3 counties
• 
  Phalaris canariensis L. Introduced PHCA5

  annual canarygrass · Poaceae 17 counties
• 
  Phalaris coerulescens Desf. Introduced PHCO40

  sunolgrass · Poaceae 1 county
• 
  Phalaris minor Retz. Introduced PHMI3

  littleseed canarygrass · Poaceae 34 counties
• 
  Phalaris paradoxa L. Introduced PHPA5

  hood canarygrass · Poaceae 33 counties
• 
  Phleum pratense L. Introduced PHPR3

  timothy · Poaceae 39 counties
• 
  Phoenix canariensis hort. ex Chabaud Introduced PHCA13

  Canary Island date palm · Arecaceae 6 counties
• 
  Phoenix dactylifera L. Introduced PHDA4

  date palm · Arecaceae 3 counties
• 
  Photinia davidiana (Decne.) Cardot Introduced PHDA5

  Chinese photinia · Rosaceae 1 county
• 
  Phragmites australis (Cav.) Trin. ex Steud. ssp. australis Introduced PHAUA7

  European common reed · Poaceae 3 counties
• 
  Phyllostachys aurea Carrière ex A. Rivière & C. Rivière Introduced PHAU8

  golden bamboo · Poaceae 3 counties
• 
  Phyllostachys bambusoides Siebold & Zucc. Introduced PHBA80

  Japanese timber bamboo · Poaceae 1 county
• 
  Physalis philadelphica Lam. Introduced PHPH2

  Mexican groundcherry · Solanaceae 20 counties
• 
  Physalis philadelphica Lam. var. immaculata Waterf. Introduced PHPHI

  Mexican groundcherry · Solanaceae 20 counties
• 
  Picris echioides L. Introduced PIEC

  bristly oxtongue · Asteraceae 27 counties
• 
  Pinellia ternata (Thunb.) Makino ex Breitenbach Introduced PITE

  crowdipper · Araceae 1 county
• 
  Pinus halepensis Mill. Introduced PIHA7

  aleppo pine · Pinaceae 2 counties
• 
  Pinus pinea L. Introduced PIPI7

  Italian stone pine · Pinaceae 2 counties
• 
  Piptatherum miliaceum (L.) Coss. Introduced PIMI3

  smilograss · Poaceae 27 counties
• 
  Piptochaetium fuscum (Steud.) Barkworh, Ciald. & Gandhi Introduced PIFU2

  bristly speargrass · Poaceae 1 county
• 
  Piptochaetium stipoides (Trin. & Rupr.) Hack. ex Arechav. Introduced PIST7

  purple speargrass · Poaceae 1 county
• 
  Pistacia atlantica Desf. Introduced PIAT4

  Mt. Atlas mastic tree · Anacardiaceae 4 counties
• 
  Pistacia chinensis Bunge Introduced PICH4

  Chinese pistache · Anacardiaceae 1 county
• 
  Pisum sativum L. Introduced PISA6

  garden pea · Fabaceae 11 counties
• 
  Pittosporum crassifolium Banks & Sol. ex A. Cunn. Introduced PICR

  stiffleaf cheesewood · Pittosporaceae 2 counties
• 
  Pittosporum tenuifolium Gaertn. Introduced PITE11

  tawhiwhi · Pittosporaceae 1 county
• 
  Pittosporum tobira (Thunb.) W.T. Aiton Introduced PITO2

  Japanese cheesewood · Pittosporaceae 1 county
• 
  Pittosporum undulatum Vent. Introduced PIUN2

  Australian cheesewood · Pittosporaceae 3 counties
• 
  Plantago arenaria Waldst. & Kit. Introduced PLAR6

  sand plantain · Plantaginaceae 4 counties
• 
  Plantago coronopus L. Introduced PLCO3

  buckhorn plantain · Plantaginaceae 30 counties
• 
  Plantago firma Kunze ex Walp. Introduced PLFI3

  Chilean plantain · Plantaginaceae 6 counties
• 
  Plantago lanceolata L. Introduced PLLA

  narrowleaf plantain · Plantaginaceae 49 counties
• 
  Plantago major L. Introduced PLMA2

  common plantain · Plantaginaceae 41 counties