Louisiana

• Acadia 22001
  964 taxa Open ↗
• Allen 22003
  1,426 taxa Open ↗
• Ascension 22005
  551 taxa Open ↗
• Assumption 22007
  456 taxa Open ↗
• Avoyelles 22009
  803 taxa Open ↗
• Beauregard 22011
  1,018 taxa Open ↗
• Bienville 22013
  1,400 taxa Open ↗
• Bossier 22015
  1,395 taxa Open ↗
• Caddo 22017
  1,796 taxa Open ↗
• Calcasieu 22019
  1,531 taxa Open ↗

Showing 3,401–3,450 of 3,739.

• 
  Thalia geniculata L. Native THGE2

  bent alligator-flag · Marantaceae 5 counties
• 
  Thalictrum dasycarpum Fisch. & Avé-Lall. Native THDA

  purple meadow-rue · Ranunculaceae 16 counties
• 
  Thalictrum revolutum DC. Native THRE

  waxyleaf meadow-rue · Ranunculaceae 3 counties
• 
  Thaspium barbinode (Michx.) Nutt. Native THBA

  hairyjoint meadowparsnip · Apiaceae 1 county
• 
  Thaspium trifoliatum (L.) A. Gray Native THTR

  purple meadowparsnip · Apiaceae 14 counties
• 
  Thaspium trifoliatum (L.) A. Gray var. aureum (L.) Britton Native THTRA

  purple meadowparsnip · Apiaceae 14 counties
• 
  Thelesperma flavodiscum (Shinners) B.L. Turner Native THFL

  East Texas greenthread · Asteraceae 1 county
• 
  Thelypteris dentata (Forssk.) E.P. St. John Native THDE4

  downy maiden fern · Thelypteridaceae 11 counties
• 
  Thelypteris hispidula (Decne.) C.F. Reed Native THHI

  roughhairy maiden fern · Thelypteridaceae 28 counties
• 
  Thelypteris hispidula (Decne.) C.F. Reed var. versicolor (R.P. St. John) Lellinger Native THHIV

  roughhairy maiden fern · Thelypteridaceae 28 counties
• 
  Thelypteris interrupta (Willd.) K. Iwats. Native THIN2

  Willdenow's maiden fern · Thelypteridaceae 2 counties
• 
  Thelypteris kunthii (Desv.) Morton Native THKU

  Kunth's maiden fern · Thelypteridaceae 62 counties
• 
  Thelypteris noveboracensis (L.) Nieuwl. Native THNO

  New York fern · Thelypteridaceae 1 county
• 
  Thelypteris palustris Schott Native THPA

  eastern marsh fern · Thelypteridaceae 30 counties
• 
  Thelypteris palustris Schott var. pubescens (G. Lawson) Fernald Native THPAP

  eastern marsh fern · Thelypteridaceae 30 counties
• 
  Themeda quadrivalvis (L.) Kuntze Introduced THQU

  kangaroo grass · Poaceae 2 counties
• 
  Themeda quadrivalvis (L.) Kuntze var. quadrivalvis Introduced THQUQ

  kangaroo grass · Poaceae 2 counties
• 
  Thlaspi arvense L. Introduced THAR5

  field pennycress · Brassicaceae 13 counties
• 
  Thymophylla tenuiloba (DC.) Small Native THTE7

  bristleleaf pricklyleaf · Asteraceae 3 counties
• 
  Thymophylla tenuiloba (DC.) Small var. tenuiloba Native THTET

  bristleleaf pricklyleaf · Asteraceae 3 counties
• 
  Tidestromia lanuginosa (Nutt.) Standl. Native TILA2

  woolly tidestromia · Amaranthaceae 1 county
• 
  Tilia americana L. Native TIAM

  American basswood · Tiliaceae 40 counties
• 
  Tilia americana L. var. caroliniana (Mill.) Castigl. Native TIAMC

  Carolina basswood · Tiliaceae 40 counties
• 
  Tilia americana L. var. heterophylla (Vent.) Loudon Native TIAMH

  American basswood · Tiliaceae 4 counties
• 
  Tillandsia recurvata (L.) L. Native TIRE

  small ballmoss · Bromeliaceae 4 counties
• ⚘
  Tillandsia usneoides (L.) L. Native TIUS

  Spanish moss · Bromeliaceae 56 counties
• 
  Tipularia discolor (Pursh) Nutt. Native TIDI

  crippled cranefly · Orchidaceae 30 counties
• 
  Tithonia rotundifolia (Mill.) S.F. Blake Introduced TIRO

  clavel de muerto · Asteraceae 1 county
• 
  Torenia fournieri Linden ex E. Fourn. Introduced TOFO2

  bluewings · Scrophulariaceae 3 counties
• 
  Torilis arvensis (Huds.) Link Introduced TOAR

  spreading hedgeparsley · Apiaceae 30 counties
• 
  Torilis nodosa (L.) Gaertn. Introduced TONO

  knotted hedgeparsley · Apiaceae 9 counties
• 
  Toxicodendron pubescens Mill. Native TOPU2

  Atlantic poison oak · Anacardiaceae 25 counties
• 
  Toxicodendron radicans (L.) Kuntze Native TORA2

  eastern poison ivy · Anacardiaceae 61 counties
• 
  Toxicodendron radicans (L.) Kuntze ssp. radicans Native TORAR

  eastern poison ivy · Anacardiaceae 2 counties
• 
  Toxicodendron vernix (L.) Kuntze Native TOVE

  poison sumac · Anacardiaceae 12 counties
• 
  Trachelospermum difforme (Walter) A. Gray Native TRDI

  climbing dogbane · Apocynaceae 54 counties
• 
  Trachelospermum jasminoides (Lindl.) Lem. Introduced TRJA

  confederate jasmine · Apocynaceae 11 counties
• 
  Tradescantia fluminensis Vell. Introduced TRFL

  small-leaf spiderwort · Commelinaceae 7 counties
• 
  Tradescantia gigantea Rose Native TRGI

  giant spiderwort · Commelinaceae 2 counties
• 
  Tradescantia hirsutiflora Bush Native TRHI

  hairyflower spiderwort · Commelinaceae 36 counties
• 
  Tradescantia occidentalis (Britton) Smyth Native TROC

  prairie spiderwort · Commelinaceae 34 counties
• 
  Tradescantia ohiensis Raf. Native TROH

  bluejacket · Commelinaceae 53 counties
• 
  Tradescantia pallida (Rose) D.R. Hunt Native TRPA10

  purple queen · Commelinaceae 4 counties
• 
  Tradescantia paludosa E.S. Anderson & Woodson Native TRPA8

  confederate spiderwort · Commelinaceae 34 counties
• 
  Tradescantia reverchonii Bush Native TRRE

  Reverchon's spiderwort · Commelinaceae 7 counties
• 
  Tradescantia spathacea Sw. Introduced TRSP8

  boatlily · Commelinaceae 2 counties
• 
  Tradescantia subaspera Ker Gawl. Native TRSU2

  zigzag spiderwort · Commelinaceae 4 counties
• 
  Tradescantia subaspera Ker Gawl. var. montana (Shuttlw. ex Britton) E.S. Anderson & Woodson Native TRSUM

  zigzag spiderwort · Commelinaceae 4 counties
• 
  Tradescantia virginiana L. Native TRVI

  Virginia spiderwort · Commelinaceae 2 counties
• 
  Tradescantia zebrina hort. ex Bosse Introduced TRZE

  inchplant · Commelinaceae 2 counties