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 4,401–4,450 of 8,499 (native).

• 
  Ivesia patellifera (J.T. Howell) Ertter Native IVPA2

  Kingston Mountain mousetail · Rosaceae 1 county
• 
  Ivesia pickeringii Torr. ex A. Gray Native IVPI

  silky mousetail · Rosaceae 2 counties
• 
  Ivesia pygmaea A. Gray Native IVPY

  dwarf mousetail · Rosaceae 5 counties
• 
  Ivesia rhypara Ertter & Reveal Native IVRH

  grimy mousetail · Rosaceae 1 county
• 
  Ivesia rhypara Ertter & Reveal var. rhypara Native IVRHR

  grimy mousetail · Rosaceae 1 county
• 
  Ivesia rhypara Ertter & Reveal var. shellyi Ertter Native IVRHS

  Shelly's mousetail · Rosaceae 1 county
• 
  Ivesia santolinoides A. Gray Native IVSA2

  Sierra mousetail · Rosaceae 13 counties
• 
  Ivesia saxosa (Lemmon ex Greene) Ertter Native IVSA3

  rock mousetail · Rosaceae 7 counties
• 
  Ivesia sericoleuca (Rydb.) Rydb. Native IVSE

  Plumas mousetail · Rosaceae 5 counties
• 
  Ivesia shockleyi S. Watson Native IVSH

  sky mousetail · Rosaceae 6 counties
• 
  Ivesia shockleyi S. Watson var. shockleyi Native IVSHS

  sky mousetail · Rosaceae 6 counties
• 
  Ivesia unguiculata A. Gray Native IVUN

  Yosemite mousetail · Rosaceae 3 counties
• 
  Ivesia webberi A. Gray Native IVWE

  wire mousetail · Rosaceae 3 counties
• 
  Jamesia americana Torr. & A. Gray Native JAAM

  fivepetal cliffbush · Hydrangeaceae 4 counties
• 
  Jamesia americana Torr. & A. Gray var. rosea J.A. Purpus ex C.K. Schneid. Native JAAMR

  fivepetal cliffbush · Hydrangeaceae 4 counties
• 
  Jaumea carnosa (Less.) A. Gray Native JACA4

  marsh jaumea · Asteraceae 19 counties
• 
  Jensia rammii (Greene) B.G. Baldw. Native JERA

  Ramm's madia · Asteraceae 7 counties
• 
  Jensia yosemitana (Parry ex A. Gray) B.G. Baldw. Native JEYO

  Yosemite tarweed · Asteraceae 6 counties
• 
  Jepsonia heterandra Eastw. Native JEHE

  foothill jepsonia · Saxifragaceae 6 counties
• 
  Jepsonia malvifolia (Greene) Small Native JEMA

  island jepsonia · Saxifragaceae 3 counties
• 
  Jepsonia parryi (Torr.) Small Native JEPA

  Parry's jepsonia · Saxifragaceae 4 counties
• 
  Johanneshowellia puberula (S. Watson) Reveal Native JOPU

  Red Creek buckwheat · Polygonaceae 1 county
• 
  Juglans californica S. Watson Native JUCA

  Southern California walnut · Juglandaceae 7 counties
• 
  Juglans hindsii (Jeps.) Jeps. ex R.E. Sm. Native JUHI

  Northern California walnut · Juglandaceae 6 counties
• 
  Juncus acuminatus Michx. Native JUAC

  tapertip rush · Juncaceae 15 counties
• 
  Juncus acutus L. Native JUAC2

  spiny rush · Juncaceae 9 counties
• 
  Juncus acutus L. ssp. leopoldii (Parl.) Snog. Native JUACL

  Leopold's rush · Juncaceae 9 counties
• 
  Juncus ambiguus Guss. Native JUAM3

  seasice rush · Juncaceae 14 counties
• 
  Juncus anthelatus (Wiegand) R.E. Brooks Native JUAN3

  greater poverty rush · Juncaceae 1 county
• 
  Juncus arcticus Willd. ssp. littoralis (Engelm.) Hultén Native JUARL

  mountain rush · Juncaceae 49 counties
• 
  Juncus articulatus L. Native JUAR4

  jointleaf rush · Juncaceae 13 counties
• 
  Juncus bolanderi Engelm. Native JUBO

  Bolander's rush · Juncaceae 13 counties
• 
  Juncus breweri Engelm. Native JUBR10

  Brewer's rush · Juncaceae 6 counties
• 
  Juncus bryoides F.J. Herm. Native JUBR5

  moss rush · Juncaceae 16 counties
• 
  Juncus bufonius L. Native JUBU

  toad rush · Juncaceae 54 counties
• 
  Juncus bufonius L. var. bufonius Native JUBUB

  toad rush · Juncaceae 21 counties
• 
  Juncus bufonius L. var. congestus Wahlenb. Native JUBUC2

  toad rush · Juncaceae 22 counties
• 
  Juncus bufonius L. var. occidentalis F.J. Herm. Native JUBUO

  toad rush · Juncaceae 36 counties
• 
  Juncus capillaris F.J. Herm. Native JUCA4

  hairystem dwarf rush · Juncaceae 11 counties
• 
  Juncus chlorocephalus Engelm. Native JUCH

  greenhead rush · Juncaceae 10 counties
• 
  Juncus confusus Coville Native JUCO2

  Colorado rush · Juncaceae 12 counties
• 
  Juncus cooperi Engelm. Native JUCO3

  Cooper's rush · Juncaceae 5 counties
• 
  Juncus covillei Piper Native JUCO5

  Coville's rush · Juncaceae 27 counties
• 
  Juncus covillei Piper var. covillei Native JUCOC

  Coville's rush · Juncaceae 3 counties
• 
  Juncus covillei Piper var. obtusatus C.L. Hitchc. Native JUCOO

  Coville's rush · Juncaceae 26 counties
• 
  Juncus diffusissimus Buckley Native JUDI2

  slimpod rush · Juncaceae 3 counties
• 
  Juncus digitatus C.W. Witham & Zika Native JUDI3

  finger rush · Juncaceae 1 county
• 
  Juncus drummondii E. Mey. Native JUDR

  Drummond's rush · Juncaceae 19 counties
• 
  Juncus drummondii E. Mey. var. subtriflorus (E. Mey.) C.L. Hitchc. Native JUDRS

  threeflower rush · Juncaceae 19 counties
• 
  Juncus dubius Engelm. Native JUDU

  questionable rush · Juncaceae 22 counties