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 5,001–5,050 of 9,954.

• 
  Hypericum mutilum L. Native HYMU

  dwarf St. Johnswort · Clusiaceae 4 counties
• 
  Hypericum perforatum L. Introduced HYPE

  common St. Johnswort · Clusiaceae 36 counties
• 
  Hypericum scouleri Hook. Native HYSC5

  Scouler's St. Johnswort · Clusiaceae 42 counties
• 
  Hypericum scouleri Hook. ssp. scouleri Native HYSCS2

  Scouler's St. Johnswort · Clusiaceae 42 counties
• 
  Hypochaeris glabra L. Introduced HYGL2

  smooth cat's ear · Asteraceae 42 counties
• 
  Hypochaeris radicata L. Introduced HYRA3

  hairy cat's ear · Asteraceae 27 counties
• 
  Hyptis emoryi Torr. Native HYEM

  desert lavender · Lamiaceae 4 counties
• 
  Iberis umbellata L. Introduced IBUM

  globe candytuft · Brassicaceae 1 county
• 
  Ibicella lutea (Lindl.) Van Eselt. Introduced IBLU

  yellow unicorn-plant · Pedaliaceae 10 counties
• 
  Idahoa scapigera (Hook.) A. Nelson & J.F. Macbr. Native IDSC

  oldstem idahoa · Brassicaceae 15 counties
• 
  Ilex aquifolium L. Introduced ILAQ80

  English holly · Aquifoliaceae 7 counties
• ⚘
  Ilex ×attenuata Ashe [cassine × opaca] Native ILAT

  topal holly · Aquifoliaceae 1 county
• 
  Iliamna bakeri (Jeps.) Wiggins Native ILBA

  Baker's wild hollyhock · Malvaceae 8 counties
• 
  Iliamna latibracteata Wiggins Native ILLA2

  California wild hollyhock · Malvaceae 4 counties
• 
  Iliamna rivularis (Douglas ex Hook.) Greene Native ILRI

  streambank wild hollyhock · Malvaceae 1 county
• 
  Impatiens balfourii Hook. f. Introduced IMBA2

  Balfour's touch-me-not · Balsaminaceae 2 counties
• 
  Impatiens noli-tangere L. Native IMNO

  western touch-me-not · Balsaminaceae 1 county
• 
  Imperata brevifolia Vasey Native IMBR2

  California satintail · Poaceae 14 counties
• 
  Inula helenium L. Introduced INHE

  elecampane inula · Asteraceae 15 counties
• 
  Ionactis alpina (Nutt.) Greene Native IOAL

  Lava aster · Asteraceae 2 counties
• 
  Ionopsidium acaule (Desf.) Rchb. Introduced IOAC2

  false diamondflower · Brassicaceae 1 county
• 
  Ipomoea aquatica Forssk. Introduced IPAQ

  swamp morning-glory · Convolvulaceae 2 counties
• 
  Ipomoea cairica (L.) Sweet Introduced IPCA

  mile a minute vine · Convolvulaceae 1 county
• 
  Ipomoea indica (Burm. f.) Merr. Introduced IPIN

  oceanblue morning-glory · Convolvulaceae 2 counties
• 
  Ipomoea lacunosa L. Native IPLA

  whitestar · Convolvulaceae 1 county
• 
  Ipomoea nil (L.) Roth Native IPNI

  whiteedge morning-glory · Convolvulaceae 3 counties
• 
  Ipomoea purpurea (L.) Roth Introduced IPPU2

  tall morning-glory · Convolvulaceae 9 counties
• 
  Ipomoea quamoclit L. Introduced IPQU

  cypressvine · Convolvulaceae 1 county
• 
  Ipomoea triloba L. Introduced IPTR2

  littlebell · Convolvulaceae 2 counties
• 
  Ipomopsis aggregata (Pursh) V.E. Grant Native IPAG

  scarlet gilia · Polemoniaceae 29 counties
• 
  Ipomopsis aggregata (Pursh) V.E. Grant ssp. aggregata Native IPAGA3

  scarlet gilia · Polemoniaceae 1 county
• 
  Ipomopsis aggregata (Pursh) V.E. Grant ssp. bridgesii (A. Gray) V.E. Grant & A.D. Grant Native IPAGB

  scarlet gilia · Polemoniaceae 8 counties
• 
  Ipomopsis aggregata (Pursh) V.E. Grant ssp. formosissima (Greene) Wherry Native IPAGF

  scarlet gilia · Polemoniaceae 8 counties
• 
  Ipomopsis arizonica (Greene) Wherry Native IPAR2

  Arizona ipomopsis · Polemoniaceae 1 county
• 
  Ipomopsis congesta (Hook.) V.E. Grant Native IPCO5

  ballhead ipomopsis · Polemoniaceae 14 counties
• 
  Ipomopsis congesta (Hook.) V.E. Grant ssp. congesta Native IPCOC3

  ballhead ipomopsis · Polemoniaceae 5 counties
• 
  Ipomopsis congesta (Hook.) V.E. Grant ssp. montana (A. Nelson & Kennedy) V.E. Grant Native IPCOM

  ballhead ipomopsis · Polemoniaceae 9 counties
• 
  Ipomopsis congesta (Hook.) V.E. Grant ssp. palmifrons (Brand) Day Native IPCOP

  ballhead ipomopsis · Polemoniaceae 4 counties
• 
  Ipomopsis effusa (A. Gray) Moran Native IPEF

  Baja California ipomopsis · Polemoniaceae 1 county
• 
  Ipomopsis polycladon (Torr.) V.E. Grant Native IPPO2

  manybranched ipomopsis · Polemoniaceae 3 counties
• 
  Ipomopsis tenuifolia (A. Gray) V.E. Grant Native IPTE3

  slenderleaf skyrocket · Polemoniaceae 2 counties
• 
  Ipomopsis tenuituba (Rydb.) V.E. Grant Native IPTE4

  slendertube skyrocket · Polemoniaceae 8 counties
• 
  Ipomopsis tenuituba (Rydb.) V.E. Grant ssp. tenuituba Native IPTET2

  slendertube skyrocket · Polemoniaceae 8 counties
• 
  Iris bracteata S. Watson Native IRBR

  Siskiyou iris · Iridaceae 1 county
• 
  Iris chrysophylla Howell Native IRCH

  yellowleaf iris · Iridaceae 5 counties
• 
  Iris douglasiana Herb. Native IRDO

  Douglas iris · Iridaceae 15 counties
• 
  Iris fernaldii R.C. Foster Native IRFE

  Fernald's iris · Iridaceae 8 counties
• 
  Iris foetidissima L. Introduced IRFO

  stinking iris · Iridaceae 3 counties
• ⚘
  Iris germanica L. Introduced IRGE

  German iris · Iridaceae 5 counties
• 
  Iris hartwegii Baker Native IRHA

  rainbow iris · Iridaceae 19 counties