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 2,451–2,500 of 2,679 (native).

• 
  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
• 
  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
• 
  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
• 
  Tradescantia ernestiana E.S. Anderson & Woodson Native TRER4

  Ernest's spiderwort · Commelinaceae 16 counties
• 
  Tradescantia hirsuticaulis Small Native TRHI5

  hairystem spiderwort · Commelinaceae 9 counties
• 
  Tradescantia hirsutiflora Bush Native TRHI

  hairyflower spiderwort · Commelinaceae 15 counties
• 
  Tradescantia longipes E.S. Anderson & Woodson Native TRLO2

  wild crocus · Commelinaceae 2 counties
• 
  Tradescantia occidentalis (Britton) Smyth Native TROC

  prairie spiderwort · Commelinaceae 16 counties
• 
  Tradescantia ohiensis Raf. Native TROH

  bluejacket · Commelinaceae 47 counties
• 
  Tradescantia ozarkana E.S. Anderson & Woodson Native TROZ

  Ozark spiderwort · Commelinaceae 11 counties
• 
  Tradescantia paludosa E.S. Anderson & Woodson Native TRPA8

  confederate spiderwort · Commelinaceae 4 counties
• 
  Tradescantia reverchonii Bush Native TRRE

  Reverchon's spiderwort · Commelinaceae 3 counties
• 
  Tradescantia subaspera Ker Gawl. Native TRSU2

  zigzag spiderwort · Commelinaceae 3 counties
• 
  Tradescantia subaspera Ker Gawl. var. subaspera Native TRSUS

  zigzag spiderwort · Commelinaceae 3 counties
• 
  Tradescantia virginiana L. Native TRVI

  Virginia spiderwort · Commelinaceae 1 county
• 
  Tragia betonicifolia Nutt. Native TRBE4

  betonyleaf noseburn · Euphorbiaceae 12 counties
• 
  Tragia cordata Michx. Native TRCO

  heartleaf noseburn · Euphorbiaceae 11 counties
• 
  Tragia ramosa Torr. Native TRRA5

  branched noseburn · Euphorbiaceae 6 counties
• 
  Tragia smallii Shinners Native TRSM

  Small's noseburn · Euphorbiaceae 1 county
• 
  Tragia urticifolia Michx. Native TRUR2

  nettleleaf noseburn · Euphorbiaceae 11 counties
• 
  Trepocarpus aethusae Nutt. ex DC. Native TRAE2

  whitenymph · Apiaceae 24 counties
• 
  Triadenum tubulosum (Walter) Gleason Native TRTU

  lesser marsh St. Johnswort · Clusiaceae 12 counties
• 
  Triadenum walteri (J.G. Gmel.) Gleason Native TRWA

  greater marsh St. Johnswort · Clusiaceae 15 counties
• 
  Trianthema portulacastrum L. Native TRPO2

  desert horsepurslane · Aizoaceae 6 counties
• 
  Trichomanes boschianum Sturm Native TRBO

  Appalachian bristle fern · Hymenophyllaceae 4 counties
• 
  Trichomanes petersii A. Gray Native TRPE2

  dwarf bristle fern · Hymenophyllaceae 7 counties
• 
  Trichostema brachiatum L. Native TRBR5

  fluxweed · Lamiaceae 22 counties
• 
  Trichostema dichotomum L. Native TRDI2

  forked bluecurls · Lamiaceae 34 counties
• 
  Tridens eragrostoides (Vasey & Scribn.) Nash Native TRER

  lovegrass tridens · Poaceae 1 county
• 
  Tridens flavus (L.) Hitchc. Native TRFL2

  purpletop tridens · Poaceae 56 counties
• 
  Tridens flavus (L.) Hitchc. var. chapmanii (Small) Shinners Native TRFLC

  Chapman's tridens · Poaceae 10 counties
• 
  Tridens flavus (L.) Hitchc. var. flavus Native TRFLF

  purpletop tridens · Poaceae 55 counties
• 
  Tridens muticus (Torr.) Nash Native TRMU

  slim tridens · Poaceae 1 county
• 
  Tridens muticus (Torr.) Nash var. elongatus (Buckley) Shinners Native TRMUE

  slim tridens · Poaceae 1 county
• 
  Tridens strictus (Nutt.) Nash Native TRST2

  longspike tridens · Poaceae 42 counties
• 
  Trifolium carolinianum Michx. Native TRCA6

  Carolina clover · Fabaceae 16 counties
• 
  Trifolium reflexum L. Native TRRE2

  buffalo clover · Fabaceae 34 counties
• 
  Trillium flexipes Raf. Native TRFL6

  nodding wakerobin · Liliaceae 1 county
• 
  Trillium pusillum Michx. Native TRPU3

  dwarf wakerobin · Liliaceae 9 counties
• 
  Trillium pusillum Michx. var. ozarkanum (Palmer & Steyerm.) Steyerm. Native TRPUO

  Ozark wakerobin · Liliaceae 9 counties