Oregon

• Baker 41001
  1,572 taxa Open ↗
• Benton 41003
  1,855 taxa Open ↗
• Clackamas 41005
  1,485 taxa Open ↗
• Clatsop 41007
  979 taxa Open ↗
• Columbia 41009
  1,183 taxa Open ↗
• Coos 41011
  1,238 taxa Open ↗
• Crook 41013
  1,354 taxa Open ↗
• Curry 41015
  1,738 taxa Open ↗
• Deschutes 41017
  1,482 taxa Open ↗
• Douglas 41019
  2,250 taxa Open ↗

Showing 5,251–5,300 of 5,518.

• 
  Trifolium longipes Nutt. ssp. oreganum (Howell) J.M. Gillett Native TRLOO

  Oregon clover · Fabaceae 2 counties
• 
  Trifolium longipes Nutt. ssp. reflexum (A. Nelson) J.M. Gillett Native TRLOR3

  droopflower clover · Fabaceae 8 counties
• 
  Trifolium longipes Nutt. ssp. shastense (House) J.M. Gillett Native TRLOS2

  longstalk clover · Fabaceae 3 counties
• 
  Trifolium macraei Hook. & Arn. Native TRMA2

  Chilean clover · Fabaceae 7 counties
• 
  Trifolium macrocephalum (Pursh) Poir. Native TRMA3

  largehead clover · Fabaceae 17 counties
• 
  Trifolium microcephalum Pursh Native TRMI4

  smallhead clover · Fabaceae 25 counties
• 
  Trifolium microdon Hook. & Arn. Native TRMI5

  thimble clover · Fabaceae 16 counties
• 
  Trifolium oliganthum Steud. Native TROL

  fewflower clover · Fabaceae 10 counties
• 
  Trifolium owyheense Gilkey Native TROW

  Owyhee clover · Fabaceae 2 counties
• 
  Trifolium plumosum Douglas ex Hook. Native TRPL2

  plumed clover · Fabaceae 5 counties
• 
  Trifolium plumosum Douglas ex Hook. ssp. amplifolium (J.S. Martin) J.M. Gillett Native TRPLA

  bigleaf clover · Fabaceae 3 counties
• 
  Trifolium plumosum Douglas ex Hook. ssp. plumosum Native TRPLP

  plumed clover · Fabaceae 3 counties
• 
  Trifolium pratense L. Introduced TRPR2

  red clover · Fabaceae 26 counties
• 
  Trifolium productum Greene Native TRPR4

  Shasta clover · Fabaceae 6 counties
• 
  Trifolium repens L. Introduced TRRE3

  white clover · Fabaceae 33 counties
• 
  Trifolium resupinatum L. Introduced TRRE4

  reversed clover · Fabaceae 1 county
• 
  Trifolium retusum L. Introduced TRRE10

  teasel clover · Fabaceae 1 county
• ⚘
  Trifolium siskiyouense J.M. Gillett Native TRSI4

  Siskiyou clover · Fabaceae 3 counties
• 
  Trifolium striatum L. Introduced TRST5

  knotted clover · Fabaceae 5 counties
• 
  Trifolium subterraneum L. Introduced TRSU3

  subterranean clover · Fabaceae 13 counties
• 
  Trifolium variegatum Nutt. Native TRVA

  whitetip clover · Fabaceae 20 counties
• 
  Trifolium vesiculosum Savi Introduced TRVE

  arrowleaf clover · Fabaceae 7 counties
• 
  Trifolium willdenovii Spreng. Native TRWI3

  tomcat clover · Fabaceae 15 counties
• 
  Trifolium wormskioldii Lehm. Native TRWO

  cows clover · Fabaceae 24 counties
• 
  Triglochin concinna Burtt Davy Native TRCO19

  slender arrowgrass · Juncaginaceae 4 counties
• 
  Triglochin maritima L. Native TRMA20

  seaside arrowgrass · Juncaginaceae 13 counties
• 
  Triglochin palustris L. Native TRPA28

  marsh arrowgrass · Juncaginaceae 2 counties
• 
  Triglochin striata Ruiz & Pav. Native TRST16

  three-rib arrowgrass · Juncaginaceae 5 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 kurabayashii J.D. Freeman Native TRKU

  giant purple wakerobin · Liliaceae 1 county
• 
  Trillium ovatum Pursh Native TROV2

  Pacific trillium · Liliaceae 26 counties
• 
  Trillium ovatum Pursh ssp. ovatum Native TROVO2

  Pacific trillium · Liliaceae 26 counties
• 
  Trillium petiolatum Pursh Native TRPE3

  Idaho trillium · Liliaceae 9 counties
• 
  Trillium rivale S. Watson Native TRRI2

  brook wakerobin · Liliaceae 4 counties
• 
  Triodanis biflora (Ruiz & Pav.) Greene Native TRBI2

  small Venus' looking-glass · Campanulaceae 6 counties
• 
  Triodanis perfoliata (L.) Nieuwl. Native TRPE4

  clasping Venus' looking-glass · Campanulaceae 17 counties
• 
  Triphysaria eriantha (Benth.) T.I. Chuang & Heckard Native TRER6

  johnny-tuck · Scrophulariaceae 4 counties
• 
  Triphysaria eriantha (Benth.) T.I. Chuang & Heckard ssp. eriantha Native TRERE2

  johnny-tuck · Scrophulariaceae 4 counties
• 
  Triphysaria pusilla (Benth.) T.I. Chuang & Heckard Native TRPU16

  dwarf owl's-clover · Scrophulariaceae 19 counties
• 
  Triphysaria versicolor Fisch. & C.A. Mey. Native TRVE6

  yellowbeak owl's-clover · Scrophulariaceae 3 counties
• 
  Triphysaria versicolor Fisch. & C.A. Mey. ssp. versicolor Native TRVEV

  yellowbeak owl's-clover · Scrophulariaceae 3 counties
• 
  Triplasis purpurea (Walter) Chapm. Native TRPU4

  purple sandgrass · Poaceae 1 county
• 
  Trisetum canescens Buckley Native TRCA21

  tall trisetum · Poaceae 33 counties
• 
  Trisetum spicatum (L.) K. Richt. Native TRSP2

  spike trisetum · Poaceae 19 counties
• 
  Trisetum wolfii Vasey Native TRWO3

  Wolf's trisetum · Poaceae 12 counties
• 
  Triteleia bridgesii (S. Watson) Greene Native TRBR7

  Bridges' brodiaea · Liliaceae 3 counties
• 
  Triteleia crocea (Alph. Wood) Greene Native TRCR7

  yellow triteleia · Liliaceae 2 counties
• 
  Triteleia crocea (Alph. Wood) Greene var. crocea Native TRCRC

  yellow triteleia · Liliaceae 2 counties
• 
  Triteleia grandiflora Lindl. Native TRGR7

  largeflower triteleia · Liliaceae 24 counties