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 7,101–7,150 of 8,499 (native).

• 
  Quercus durata Jeps. var. gabrielensis Nixon & C.H. Mull. Native QUDUG

  leather oak · Fagaceae 1 county
• 
  Quercus engelmannii Greene Native QUEN

  Engelmann oak · Fagaceae 4 counties
• 
  Quercus garryana Douglas ex Hook. Native QUGA4

  Oregon white oak · Fagaceae 35 counties
• 
  Quercus garryana Douglas ex Hook. var. fruticosa (Engelm.) Govaerts Native QUGAF

  Oregon white oak · Fagaceae 26 counties
• 
  Quercus garryana Douglas ex Hook. var. garryana Native QUGAG2

  Oregon white oak · Fagaceae 14 counties
• 
  Quercus garryana Douglas ex Hook. var. semota Jeps. Native QUGAS

  Oregon white oak · Fagaceae 14 counties
• 
  Quercus john-tuckeri Nixon & C.H. Mull. Native QUJO3

  Tucker oak · Fagaceae 11 counties
• 
  Quercus kelloggii Newberry Native QUKE

  California black oak · Fagaceae 49 counties
• 
  Quercus lobata Née Native QULO

  valley oak · Fagaceae 44 counties
• 
  Quercus pacifica Nixon & C.H. Mull. Native QUPA6

  Channel Island scrub oak · Fagaceae 2 counties
• 
  Quercus palmeri Engelm. Native QUPA10

  Palmer oak · Fagaceae 7 counties
• 
  Quercus parvula Greene Native QUPA8

  coast oak · Fagaceae 6 counties
• 
  Quercus parvula Greene var. parvula Native QUPAP2

  Santa Cruz Island oak · Fagaceae 1 county
• 
  Quercus parvula Greene var. shrevei (C.H. Mull.) Nixon Native QUPAS2

  Shreve oak · Fagaceae 4 counties
• 
  Quercus parvula Greene var. tamalpaisensis S.K. Langer Native QUPAT

  Tamalpais oak · Fagaceae 1 county
• 
  Quercus sadleriana R. Br. ter Native QUSA2

  deer oak · Fagaceae 5 counties
• 
  Quercus tomentella Engelm. Native QUTO

  island live oak · Fagaceae 3 counties
• 
  Quercus turbinella Greene Native QUTU2

  Sonoran scrub oak · Fagaceae 1 county
• 
  Quercus vacciniifolia Kellogg Native QUVA

  huckleberry oak · Fagaceae 26 counties
• 
  Quercus wislizeni A. DC. Native QUWI2

  interior live oak · Fagaceae 49 counties
• 
  Quercus wislizeni A. DC. var. frutescens Engelm. Native QUWIF

  interior live oak · Fagaceae 25 counties
• 
  Quercus wislizeni A. DC. var. wislizeni Native QUWIW

  interior live oak · Fagaceae 19 counties
• ⚘
  Quercus ×acutidens Torr. [cornelius-mulleri × engelmannii] Native QUAC3

  hybrid oak · Fagaceae 4 counties
• ⚘
  Quercus ×alvordiana Eastw. (pro sp.) [douglasii × turbinella] Native QUAL2

  Alvord oak · Fagaceae 8 counties
• ⚘
  Quercus ×eplingii C.H. Mull. [douglasii × garryana] Native QUEP

  hybrid oak · Fagaceae 3 counties
• ⚘
  Quercus ×ganderi C.B. Wolf [agrifolia × kelloggii] Native QUGA2

  hybrid oak · Fagaceae 8 counties
• ⚘
  Quercus ×grandidentata Ewan (pro sp.) [dumosa × engelmannii] Native QUGR4

  hybrid oak · Fagaceae 1 county
• ⚘
  Quercus ×howellii Tucker [dumosa × garryana] Native QUHO

  hybrid oak · Fagaceae 4 counties
• ⚘
  Quercus ×jolonensis Sarg. [douglasii × lobata] Native QUJO

  hybrid oak · Fagaceae 2 counties
• ⚘
  Quercus ×macdonaldii Greene & Kellogg (pro sp.) [berberidifolia × lobata] Native QUMA4

  MacDonald oak · Fagaceae 5 counties
• ⚘
  Quercus ×moreha Kellogg (pro sp.) [kelloggii × wislizeni] Native QUMO2

  oracle oak · Fagaceae 41 counties
• ⚘
  Quercus ×munzii Tucker [lobata × turbinella] Native QUMU3

  hybrid oak · Fagaceae 1 county
• ⚘
  Quercus ×subconvexa Tucker [durata × garryana] Native QUSU4

  hybrid oak · Fagaceae 3 counties
• 
  Quincula lobata (Torr.) Raf. Native QULO2

  Chinese lantern · Solanaceae 1 county
• 
  Rafinesquia californica Nutt. Native RACA

  California plumeseed · Asteraceae 37 counties
• 
  Rafinesquia neomexicana A. Gray Native RANE

  New Mexico plumeseed · Asteraceae 8 counties
• 
  Raillardella argentea (A. Gray) A. Gray Native RAAR

  silky raillardella · Asteraceae 18 counties
• 
  Raillardella pringlei Greene Native RAPR

  showy raillardella · Asteraceae 2 counties
• 
  Raillardella scaposa (A. Gray) A. Gray Native RASC2

  stem raillardella · Asteraceae 8 counties
• 
  Ranunculus alismifolius Geyer ex Benth. Native RAAL

  plantainleaf buttercup · Ranunculaceae 28 counties
• 
  Ranunculus alismifolius Geyer ex Benth. var. alismellus A. Gray Native RAALA

  plantainleaf buttercup · Ranunculaceae 24 counties
• 
  Ranunculus alismifolius Geyer ex Benth. var. alismifolius Native RAALA2

  plantainleaf buttercup · Ranunculaceae 21 counties
• 
  Ranunculus andersonii A. Gray Native RAAN

  Anderson's buttercup · Ranunculaceae 6 counties
• 
  Ranunculus andersonii A. Gray var. andersonii Native RAANA

  Anderson's buttercup · Ranunculaceae 6 counties
• 
  Ranunculus aquatilis L. Native RAAQ

  white water crowfoot · Ranunculaceae 45 counties
• 
  Ranunculus bonariensis Poir. Native RABO

  Carter's buttercup · Ranunculaceae 9 counties
• 
  Ranunculus bonariensis Poir. var. trisepalus (Gillies ex Hook. & Arn.) Lourteig Native RABOT

  Carter's buttercup · Ranunculaceae 9 counties
• 
  Ranunculus californicus Benth. Native RACA2

  California buttercup · Ranunculaceae 43 counties
• 
  Ranunculus canus Benth. Native RACA3

  Sacramento Valley buttercup · Ranunculaceae 26 counties
• 
  Ranunculus cymbalaria Pursh Native RACY

  alkali buttercup · Ranunculaceae 22 counties