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 4,201–4,250 of 8,499 (native).

• 
  Hoita strobilina (Hook. & Arn.) Rydb. Native HOST3

  Loma prieta · Fabaceae 4 counties
• 
  Hollisteria lanata S. Watson Native HOLA2

  false spikeflower · Polygonaceae 10 counties
• 
  Holmgrenanthe petrophila (Coville & Morton) Elisens Native HOPE2

  rocklady · Scrophulariaceae 1 county
• 
  Holocarpha heermannii (Greene) D.D. Keck Native HOHE

  Heermann's tarweed · Asteraceae 16 counties
• 
  Holocarpha macradenia (DC.) Greene Native HOMA

  Santa Cruz tarplant · Asteraceae 5 counties
• 
  Holocarpha obconica (J.C. Clausen & D.D. Keck) D.D. Keck Native HOOB

  San Joaquin tarweed · Asteraceae 9 counties
• 
  Holocarpha obconica (J.C. Clausen & D.D. Keck) D.D. Keck ssp. autumnalis D.D. Keck Native HOOBA

  San Joaquin tarweed · Asteraceae 1 county
• 
  Holocarpha obconica (J.C. Clausen & D.D. Keck) D.D. Keck ssp. obconica Native HOOBO

  San Joaquin tarweed · Asteraceae 8 counties
• 
  Holocarpha virgata (A. Gray) D.D. Keck Native HOVI

  yellowflower tarweed · Asteraceae 31 counties
• 
  Holocarpha virgata (A. Gray) D.D. Keck ssp. elongata D.D. Keck Native HOVIE

  wand tarbush · Asteraceae 3 counties
• 
  Holocarpha virgata (A. Gray) D.D. Keck ssp. virgata Native HOVIV

  yellowflower tarweed · Asteraceae 28 counties
• 
  Holodiscus discolor (Pursh) Maxim. Native HODI

  oceanspray · Rosaceae 51 counties
• 
  Holozonia filipes (Hook. & Arn.) Greene Native HOFI

  whitecrown · Asteraceae 17 counties
• ⚘
  Hordeum arizonicum Covas Native HOAR

  Arizona barley · Poaceae 1 county
• 
  Hordeum brachyantherum Nevski Native HOBR2

  meadow barley · Poaceae 51 counties
• 
  Hordeum brachyantherum Nevski ssp. brachyantherum Native HOBRB2

  meadow barley · Poaceae 44 counties
• 
  Hordeum brachyantherum Nevski ssp. californicum (Covas & Stebbins) Bothmer, N. Jacobsen & Seberg Native HOBRC2

  California barley · Poaceae 38 counties
• 
  Hordeum depressum (Scribn. & J.G. Sm.) Rydb. Native HODE2

  dwarf barley · Poaceae 27 counties
• 
  Hordeum intercedens Nevski Native HOIN2

  bobtail barley · Poaceae 11 counties
• 
  Hordeum jubatum L. Native HOJU

  foxtail barley · Poaceae 26 counties
• 
  Hordeum jubatum L. ssp. jubatum Native HOJUJ

  foxtail barley · Poaceae 26 counties
• 
  Hordeum pusillum Nutt. Native HOPU

  little barley · Poaceae 3 counties
• 
  Horkelia bolanderi A. Gray Native HOBO2

  border horkelia · Rosaceae 3 counties
• 
  Horkelia californica Cham. & Schltdl. Native HOCA3

  California horkelia · Rosaceae 27 counties
• 
  Horkelia californica Cham. & Schltdl. ssp. californica Native HOCAC

  California horkelia · Rosaceae 4 counties
• 
  Horkelia californica Cham. & Schltdl. ssp. dissita (Crum) Ertter Native HOCAD

  California horkelia · Rosaceae 18 counties
• 
  Horkelia californica Cham. & Schltdl. ssp. frondosa (Greene) Ertter Native HOCAF2

  California horkelia · Rosaceae 6 counties
• 
  Horkelia clevelandii (Greene) Rydb. Native HOCL

  Cleveland's horkelia · Rosaceae 2 counties
• 
  Horkelia congesta Douglas ex Hook. Native HOCO

  Sierra horkelia · Rosaceae 1 county
• 
  Horkelia congesta Douglas ex Hook. ssp. nemorosa D.D. Keck Native HOCON

  Sierra horkelia · Rosaceae 1 county
• 
  Horkelia cuneata Lindl. Native HOCU

  wedgeleaf horkelia · Rosaceae 14 counties
• 
  Horkelia cuneata Lindl. ssp. cuneata Native HOCUC

  wedgeleaf horkelia · Rosaceae 6 counties
• 
  Horkelia cuneata Lindl. ssp. puberula (Greene) D.D. Keck Native HOCUP

  wedgeleaf horkelia · Rosaceae 8 counties
• 
  Horkelia cuneata Lindl. ssp. sericea (A. Gray) D.D. Keck Native HOCUS

  wedgeleaf horkelia · Rosaceae 9 counties
• 
  Horkelia daucifolia (Greene) Rydb. Native HODA

  carrotleaf horkelia · Rosaceae 4 counties
• 
  Horkelia daucifolia (Greene) Rydb. ssp. daucifolia Native HODAD

  carrotleaf horkelia · Rosaceae 3 counties
• 
  Horkelia daucifolia (Greene) Rydb. ssp. latior D.D. Keck Native HODAL

  carrotleaf horkelia · Rosaceae 1 county
• 
  Horkelia fusca Lindl. Native HOFU

  pinewoods horkelia · Rosaceae 22 counties
• 
  Horkelia fusca Lindl. ssp. capitata (Lindl.) D.D. Keck Native HOFUC2

  bighead horkelia · Rosaceae 3 counties
• 
  Horkelia fusca Lindl. ssp. parviflora (Nutt. ex Torr. & A. Gray) D.D. Keck Native HOFUP2

  smallflower horkelia · Rosaceae 22 counties
• 
  Horkelia fusca Lindl. ssp. tenella (S. Watson) D.D. Keck Native HOFUT

  pinewoods horkelia · Rosaceae 5 counties
• 
  Horkelia hendersonii Howell Native HOHE2

  Henderson's horkelia · Rosaceae 1 county
• 
  Horkelia hispidula Rydb. Native HOHI

  White Mountain horkelia · Rosaceae 2 counties
• 
  Horkelia marinensis (Elmer) Crum ex D.D. Keck Native HOMA3

  Point Reyes horkelia · Rosaceae 4 counties
• 
  Horkelia parryi Greene Native HOPA2

  Parry horkelia · Rosaceae 4 counties
• 
  Horkelia rydbergii Elmer Native HORY

  Rydberg's horkelia · Rosaceae 4 counties
• 
  Horkelia sericata S. Watson Native HOSE

  silky horkelia · Rosaceae 2 counties
• 
  Horkelia tenuiloba (Torr.) A. Gray Native HOTE2

  Santa Rosa horkelia · Rosaceae 3 counties
• 
  Horkelia tridentata Torr. Native HOTR

  threetooth horkelia · Rosaceae 23 counties
• 
  Horkelia tridentata Torr. ssp. flavescens (Rydb.) D.D. Keck Native HOTRF

  threetooth horkelia · Rosaceae 11 counties