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 8,201–8,250 of 8,499 (native).

• 
  Trifolium gracilentum Torr. & A. Gray var. gracilentum Native TRGRG

  pinpoint clover · Fabaceae 39 counties
• 
  Trifolium gracilentum Torr. & A. Gray var. palmeri (S. Watson) McDermott Native TRGRP

  Palmer's clover · Fabaceae 3 counties
• 
  Trifolium gymnocarpon Nutt. Native TRGY

  hollyleaf clover · Fabaceae 4 counties
• 
  Trifolium gymnocarpon Nutt. ssp. plummerae (S. Watson) J.M. Gillett Native TRGYP2

  Plummer's clover · Fabaceae 4 counties
• 
  Trifolium howellii S. Watson Native TRHO

  canyon clover · Fabaceae 3 counties
• 
  Trifolium jokerstii M. Vincent & R. Morgan Native TRJO

  Jim's clover · Fabaceae 1 county
• 
  Trifolium lemmonii S. Watson Native TRLE2

  Lemmon's clover · Fabaceae 3 counties
• 
  Trifolium longipes Nutt. Native TRLO

  longstalk clover · Fabaceae 28 counties
• 
  Trifolium longipes Nutt. ssp. atrorubens (Greene) J.M. Gillett Native TRLOA

  longstalk clover · Fabaceae 1 county
• 
  Trifolium longipes Nutt. ssp. elmeri (Greene) J.M. Gillett Native TRLOE

  Elmer's clover · Fabaceae 5 counties
• 
  Trifolium longipes Nutt. ssp. hansenii (Greene) J.M. Gillett Native TRLOH

  Hansen's clover · Fabaceae 28 counties
• 
  Trifolium longipes Nutt. ssp. multipedunculatum (Kennedy) J.M. Gillett Native TRLOM

  longstalk clover · Fabaceae 1 county
• 
  Trifolium longipes Nutt. ssp. oreganum (Howell) J.M. Gillett Native TRLOO

  Oregon clover · Fabaceae 4 counties
• 
  Trifolium longipes Nutt. ssp. reflexum (A. Nelson) J.M. Gillett Native TRLOR3

  droopflower clover · Fabaceae 1 county
• 
  Trifolium longipes Nutt. ssp. shastense (House) J.M. Gillett Native TRLOS2

  longstalk clover · Fabaceae 4 counties
• 
  Trifolium macraei Hook. & Arn. Native TRMA2

  Chilean clover · Fabaceae 17 counties
• 
  Trifolium macrocephalum (Pursh) Poir. Native TRMA3

  largehead clover · Fabaceae 6 counties
• 
  Trifolium microcephalum Pursh Native TRMI4

  smallhead clover · Fabaceae 53 counties
• 
  Trifolium microdon Hook. & Arn. Native TRMI5

  thimble clover · Fabaceae 30 counties
• 
  Trifolium monanthum A. Gray Native TRMO2

  mountain carpet clover · Fabaceae 36 counties
• 
  Trifolium monanthum A. Gray ssp. grantianum (A. Heller) J.M. Gillett Native TRMOG

  mountain carpet clover · Fabaceae 3 counties
• 
  Trifolium monanthum A. Gray ssp. monanthum Native TRMOM

  mountain carpet clover · Fabaceae 21 counties
• 
  Trifolium monanthum A. Gray ssp. parvum (Kellogg) J.M. Gillett Native TRMOP

  mountain carpet clover · Fabaceae 29 counties
• 
  Trifolium monanthum A. Gray ssp. tenerum (Eastw.) J.M. Gillett Native TRMOT

  mountain carpet clover · Fabaceae 2 counties
• 
  Trifolium obtusiflorum Hook. f. Native TROB2

  clammy clover · Fabaceae 42 counties
• 
  Trifolium oliganthum Steud. Native TROL

  fewflower clover · Fabaceae 25 counties
• 
  Trifolium olivaceum Greene Native TROL2

  olive clover · Fabaceae 16 counties
• 
  Trifolium piorkowskii Rand. Morgan & A.L. Barber Native TRPI2

  Piorkowski's clover · Fabaceae 1 county
• 
  Trifolium productum Greene Native TRPR4

  Shasta clover · Fabaceae 15 counties
• 
  Trifolium trichocalyx A. Heller Native TRTR

  Monterey clover · Fabaceae 2 counties
• 
  Trifolium variegatum Nutt. Native TRVA

  whitetip clover · Fabaceae 50 counties
• 
  Trifolium willdenovii Spreng. Native TRWI3

  tomcat clover · Fabaceae 50 counties
• 
  Trifolium wormskioldii Lehm. Native TRWO

  cows clover · Fabaceae 49 counties
• 
  Triglochin concinna Burtt Davy Native TRCO19

  slender arrowgrass · Juncaginaceae 14 counties
• 
  Triglochin maritima L. Native TRMA20

  seaside arrowgrass · Juncaginaceae 33 counties
• 
  Triglochin palustris L. Native TRPA28

  marsh arrowgrass · Juncaginaceae 3 counties
• 
  Triglochin striata Ruiz & Pav. Native TRST16

  three-rib arrowgrass · Juncaginaceae 12 counties
• 
  Trillium albidum J.D. Freeman Native TRAL4

  giant white wakerobin · Liliaceae 12 counties
• 
  Trillium albidum J.D. Freeman ssp. albidum Native TRALA

  giant white wakerobin · Liliaceae 12 counties
• 
  Trillium angustipetalum (Torr.) J.D. Freeman Native TRAN5

  narrowpetal wakerobin · Liliaceae 16 counties
• 
  Trillium chloropetalum (Torr.) Howell Native TRCH2

  giant wakerobin · Liliaceae 17 counties
• 
  Trillium chloropetalum (Torr.) Howell var. chloropetalum Native TRCHC

  giant wakerobin · Liliaceae 4 counties
• 
  Trillium chloropetalum (Torr.) Howell var. giganteum (Hook. & Arn.) Munz Native TRCHG

  giant wakerobin · Liliaceae 3 counties
• 
  Trillium kurabayashii J.D. Freeman Native TRKU

  giant purple wakerobin · Liliaceae 2 counties
• 
  Trillium ovatum Pursh Native TROV2

  Pacific trillium · Liliaceae 16 counties
• 
  Trillium ovatum Pursh ssp. oettingeri Munz & Thorne Native TROVO

  Oettinger's trillium · Liliaceae 3 counties
• 
  Trillium ovatum Pursh ssp. ovatum Native TROVO2

  Pacific trillium · Liliaceae 16 counties
• 
  Trillium rivale S. Watson Native TRRI2

  brook wakerobin · Liliaceae 2 counties
• 
  Triodanis biflora (Ruiz & Pav.) Greene Native TRBI2

  small Venus' looking-glass · Campanulaceae 28 counties
• 
  Triodanis perfoliata (L.) Nieuwl. Native TRPE4

  clasping Venus' looking-glass · Campanulaceae 3 counties