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 8,051–8,100 of 8,499 (native).

• 
  Tauschia hartwegii (A. Gray) J.F. Macbr. Native TAHA2

  Hartweg's umbrellawort · Apiaceae 22 counties
• 
  Tauschia howellii (J.M. Coult. & Rose) J.F. Macbr. Native TAHO2

  Howell's umbrellawort · Apiaceae 1 county
• 
  Tauschia kelloggii (A. Gray) J.F. Macbr. Native TAKE

  Kellogg's umbrellawort · Apiaceae 15 counties
• 
  Tauschia parishii (J.M. Coult. & Rose) J.F. Macbr. Native TAPA5

  Parish's umbrellawort · Apiaceae 10 counties
• 
  Taxus brevifolia Nutt. Native TABR2

  Pacific yew · Taxaceae 19 counties
• 
  Tellima grandiflora (Pursh) Douglas ex Lindl. Native TEGR2

  bigflower tellima · Saxifragaceae 21 counties
• 
  Tetracoccus dioicus Parry Native TEDI

  red shrubby-spurge · Euphorbiaceae 3 counties
• 
  Tetracoccus hallii Brandegee Native TEHA

  Hall's shrubby-spurge · Euphorbiaceae 3 counties
• 
  Tetracoccus ilicifolius Coville & Gilman Native TEIL

  hollybush · Euphorbiaceae 1 county
• 
  Tetradymia argyraea Munz & Roos Native TEAR

  striped cottonthorn · Asteraceae 2 counties
• 
  Tetradymia axillaris A. Nelson Native TEAX

  longspine horsebrush · Asteraceae 5 counties
• 
  Tetradymia axillaris A. Nelson var. axillaris Native TEAXA

  longspine horsebrush · Asteraceae 1 county
• 
  Tetradymia axillaris A. Nelson var. longispina (M.E. Jones) Strother Native TEAXL

  longspine horsebrush · Asteraceae 5 counties
• 
  Tetradymia canescens DC. Native TECA2

  spineless horsebrush · Asteraceae 16 counties
• 
  Tetradymia comosa A. Gray Native TECO2

  hairy horsebrush · Asteraceae 5 counties
• 
  Tetradymia glabrata Torr. & A. Gray Native TEGL

  littleleaf horsebrush · Asteraceae 8 counties
• 
  Tetradymia spinosa Hook. & Arn. Native TESP2

  shortspine horsebrush · Asteraceae 7 counties
• 
  Tetradymia stenolepis Greene Native TEST2

  Mojave cottonthorn · Asteraceae 5 counties
• 
  Tetraneuris acaulis (Pursh) Greene Native TEAC

  stemless four-nerve daisy · Asteraceae 1 county
• 
  Tetraneuris acaulis (Pursh) Greene var. arizonica (Greene) K.F. Parker Native TEACA

  Arizona four-nerve daisy · Asteraceae 1 county
• 
  Teucrium cubense Jacq. Native TECU

  small coastal germander · Lamiaceae 3 counties
• 
  Teucrium glandulosum Kellogg Native TEGL2

  sticky germander · Lamiaceae 1 county
• 
  Thalictrum alpinum L. Native THAL

  alpine meadow-rue · Ranunculaceae 2 counties
• 
  Thalictrum fendleri Engelm. ex A. Gray Native THFE

  Fendler's meadow-rue · Ranunculaceae 41 counties
• 
  Thalictrum fendleri Engelm. ex A. Gray var. fendleri Native THFEF

  Fendler's meadow-rue · Ranunculaceae 21 counties
• 
  Thalictrum fendleri Engelm. ex A. Gray var. polycarpum Torr. Native THFEP2

  Fendler's meadow-rue · Ranunculaceae 33 counties
• 
  Thalictrum occidentale A. Gray Native THOC

  western meadow-rue · Ranunculaceae 4 counties
• 
  Thalictrum occidentale A. Gray var. occidentale Native THOCO2

  western meadow-rue · Ranunculaceae 4 counties
• 
  Thalictrum sparsiflorum Turcz. ex Fisch. & C.A. Mey. Native THSP

  fewflower meadow-rue · Ranunculaceae 20 counties
• 
  Thalictrum sparsiflorum Turcz. ex Fisch. & C.A. Mey. var. saximontanum B. Boivin Native THSPS

  fewflower meadow-rue · Ranunculaceae 20 counties
• 
  Thalictrum venulosum Trel. Native THVE

  veiny meadow-rue · Ranunculaceae 1 county
• 
  Thamnosma montana Torr. & Frém. Native THMO

  turpentinebroom · Rutaceae 5 counties
• 
  Thelesperma megapotamicum (Spreng.) Kuntze Native THME

  Hopi tea greenthread · Asteraceae 2 counties
• 
  Thelypodium brachycarpum Torr. Native THBR

  shortpod thelypody · Brassicaceae 8 counties
• 
  Thelypodium crispum Greene ex Payson Native THCR

  crisped thelypody · Brassicaceae 7 counties
• 
  Thelypodium flexuosum B.L. Rob. Native THFL3

  nodding thelypody · Brassicaceae 4 counties
• 
  Thelypodium howellii S. Watson Native THHO

  Howell's thelypody · Brassicaceae 4 counties
• 
  Thelypodium howellii S. Watson ssp. howellii Native THHOH

  Howell's thelypody · Brassicaceae 4 counties
• 
  Thelypodium integrifolium (Nutt.) Endl. ex Walp. Native THIN

  entireleaved thelypody · Brassicaceae 7 counties
• 
  Thelypodium integrifolium (Nutt.) Endl. ex Walp. ssp. affine (Greene) Al-Shehbaz Native THINA

  entireleaved thelypody · Brassicaceae 2 counties
• 
  Thelypodium integrifolium (Nutt.) Endl. ex Walp. ssp. complanatum Al-Shehbaz Native THINC

  entireleaved thelypody · Brassicaceae 3 counties
• 
  Thelypodium laciniatum (Hook.) Endl. ex Walp. Native THLA

  cutleaf thelypody · Brassicaceae 5 counties
• 
  Thelypodium milleflorum A. Nelson Native THMI5

  manyflower thelypody · Brassicaceae 6 counties
• 
  Thelypodium stenopetalum S. Watson Native THST

  slenderpetal thelypody · Brassicaceae 1 county
• 
  Thelypteris nevadensis (Baker) Clute ex Morton Native THNE

  Sierra marsh fern · Thelypteridaceae 7 counties
• 
  Thelypteris puberula (Baker) Morton Native THPU

  showy maiden fern · Thelypteridaceae 4 counties
• 
  Thelypteris puberula (Baker) Morton var. sonorensis A.R. Sm. Native THPUS

  Sonoran maiden fern · Thelypteridaceae 4 counties
• 
  Thermopsis californica S. Watson Native THCA4

  California goldenbanner · Fabaceae 11 counties
• 
  Thermopsis californica S. Watson var. argentata (Greene) C.J. Chen & B.L. Turner Native THCAA

  California goldenbanner · Fabaceae 7 counties
• 
  Thermopsis californica S. Watson var. californica Native THCAC2

  California goldenbanner · Fabaceae 1 county