Arkansas

• Arkansas 05001
  816 taxa Open ↗
• Ashley 05003
  1,236 taxa Open ↗
• Baxter 05005
  1,025 taxa Open ↗
• Benton 05007
  1,372 taxa Open ↗
• Boone 05009
  697 taxa Open ↗
• Bradley 05011
  1,145 taxa Open ↗
• Calhoun 05013
  573 taxa Open ↗
• Carroll 05015
  1,039 taxa Open ↗
• Chicot 05017
  440 taxa Open ↗
• Clark 05019
  896 taxa Open ↗

Showing 2,951–3,000 of 3,277.

• 
  Tamarix chinensis Lour. Introduced TACH2

  five-stamen tamarisk · Tamaricaceae 14 counties
• 
  Tamarix ramosissima Ledeb. Introduced TARA

  saltcedar · Tamaricaceae 1 county
• 
  Tanacetum vulgare L. Introduced TAVU

  common tansy · Asteraceae 3 counties
• 
  Taraxacum laevigatum (Willd.) DC. Introduced TALA2

  rock dandelion · Asteraceae 1 county
• 
  Taraxacum officinale F.H. Wigg. Both TAOF

  common dandelion · Asteraceae 51 counties
• 
  Taraxacum officinale F.H. Wigg. ssp. officinale Introduced TAOFO

  common dandelion · Asteraceae 51 counties
• 
  Taxodium distichum (L.) Rich. Native TADI2

  bald cypress · Cupressaceae 58 counties
• 
  Tephrosia onobrychoides Nutt. Native TEON

  multibloom hoarypea · Fabaceae 25 counties
• 
  Tephrosia virginiana (L.) Pers. Native TEVI

  Virginia tephrosia · Fabaceae 62 counties
• 
  Tetragonotheca ludoviciana (Torr. & A. Gray) A. Gray ex H.M. Hall Native TELU

  Louisiana nerveray · Asteraceae 1 county
• 
  Tetraneuris scaposa (DC.) Greene Native TESC2

  stemmy four-nerve daisy · Asteraceae 1 county
• 
  Tetraneuris scaposa (DC.) Greene var. scaposa Native TESCS

  stemmy four-nerve daisy · Asteraceae 1 county
• 
  Teucrium canadense L. Native TECA3

  Canada germander · Lamiaceae 59 counties
• 
  Teucrium canadense L. var. canadense Native TECAC

  Canada germander · Lamiaceae 59 counties
• 
  Thalia dealbata Fraser ex Roscoe Native THDE

  powdery alligator-flag · Marantaceae 11 counties
• 
  Thalictrum arkansanum B. Boivin Native THAR

  Arkansas meadow-rue · Ranunculaceae 4 counties
• 
  Thalictrum dasycarpum Fisch. & Avé-Lall. Native THDA

  purple meadow-rue · Ranunculaceae 7 counties
• 
  Thalictrum dioicum L. Native THDI

  early meadow-rue · Ranunculaceae 6 counties
• 
  Thalictrum revolutum DC. Native THRE

  waxyleaf meadow-rue · Ranunculaceae 25 counties
• 
  Thalictrum thalictroides (L.) Eames & B. Boivin Native THTH2

  rue anemone · Ranunculaceae 45 counties
• 
  Thaspium barbinode (Michx.) Nutt. Native THBA

  hairyjoint meadowparsnip · Apiaceae 19 counties
• 
  Thaspium trifoliatum (L.) A. Gray Native THTR

  purple meadowparsnip · Apiaceae 35 counties
• 
  Thaspium trifoliatum (L.) A. Gray var. aureum (L.) Britton Native THTRA

  purple meadowparsnip · Apiaceae 35 counties
• 
  Thaspium trifoliatum (L.) A. Gray var. trifoliatum Native THTRT

  purple meadowparsnip · Apiaceae 2 counties
• 
  Thelesperma filifolium (Hook.) A. Gray Native THFI

  stiff greenthread · Asteraceae 10 counties
• 
  Thelesperma filifolium (Hook.) A. Gray var. filifolium Native THFIF

  stiff greenthread · Asteraceae 10 counties
• 
  Thelesperma flavodiscum (Shinners) B.L. Turner Native THFL

  East Texas greenthread · Asteraceae 2 counties
• 
  Thelesperma megapotamicum (Spreng.) Kuntze Native THME

  Hopi tea greenthread · Asteraceae 1 county
• 
  Thelypteris hispidula (Decne.) C.F. Reed Native THHI

  roughhairy maiden fern · Thelypteridaceae 1 county
• 
  Thelypteris hispidula (Decne.) C.F. Reed var. versicolor (R.P. St. John) Lellinger Native THHIV

  roughhairy maiden fern · Thelypteridaceae 1 county
• 
  Thelypteris kunthii (Desv.) Morton Native THKU

  Kunth's maiden fern · Thelypteridaceae 7 counties
• 
  Thelypteris noveboracensis (L.) Nieuwl. Native THNO

  New York fern · Thelypteridaceae 8 counties
• 
  Thelypteris palustris Schott Native THPA

  eastern marsh fern · Thelypteridaceae 12 counties
• 
  Thelypteris palustris Schott var. pubescens (G. Lawson) Fernald Native THPAP

  eastern marsh fern · Thelypteridaceae 12 counties
• 
  Thlaspi arvense L. Introduced THAR5

  field pennycress · Brassicaceae 15 counties
• 
  Tilia americana L. Native TIAM

  American basswood · Tiliaceae 62 counties
• 
  Tilia americana L. var. caroliniana (Mill.) Castigl. Native TIAMC

  Carolina basswood · Tiliaceae 1 county
• 
  Tilia americana L. var. heterophylla (Vent.) Loudon Native TIAMH

  American basswood · Tiliaceae 1 county
• ⚘
  Tillandsia usneoides (L.) L. Native TIUS

  Spanish moss · Bromeliaceae 8 counties
• 
  Tipularia discolor (Pursh) Nutt. Native TIDI

  crippled cranefly · Orchidaceae 27 counties
• 
  Torilis arvensis (Huds.) Link Introduced TOAR

  spreading hedgeparsley · Apiaceae 52 counties
• 
  Torilis arvensis (Huds.) Link ssp. arvensis Introduced TOARA

  spreading hedgeparsley · Apiaceae 51 counties
• 
  Torilis japonica (Houtt.) DC. Introduced TOJA

  erect hedgeparsley · Apiaceae 1 county
• 
  Torilis nodosa (L.) Gaertn. Introduced TONO

  knotted hedgeparsley · Apiaceae 2 counties
• 
  Toxicodendron pubescens Mill. Native TOPU2

  Atlantic poison oak · Anacardiaceae 33 counties
• 
  Toxicodendron radicans (L.) Kuntze Native TORA2

  eastern poison ivy · Anacardiaceae 64 counties
• 
  Toxicodendron radicans (L.) Kuntze ssp. negundo (Greene) Gillis Native TORAN

  eastern poison ivy · Anacardiaceae 4 counties
• 
  Toxicodendron radicans (L.) Kuntze ssp. pubens (Engelm. ex S. Watson) Gillis Native TORAP

  eastern poison ivy · Anacardiaceae 1 county
• 
  Toxicodendron radicans (L.) Kuntze ssp. radicans Native TORAR

  eastern poison ivy · Anacardiaceae 1 county
• 
  Trachelospermum difforme (Walter) A. Gray Native TRDI

  climbing dogbane · Apocynaceae 53 counties