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 2,651–2,700 of 2,926 (native).

• 
  Symphyotrichum patens (Aiton) G.L. Nesom var. patens Native SYPAP2

  late purple aster · Asteraceae 37 counties
• 
  Symphyotrichum patens (Aiton) G.L. Nesom var. patentissimum (Lindl. ex DC.) G.L. Nesom Native SYPAP

  late purple aster · Asteraceae 1 county
• 
  Symphyotrichum pilosum (Willd.) G.L. Nesom Native SYPI2

  hairy white oldfield aster · Asteraceae 36 counties
• 
  Symphyotrichum pilosum (Willd.) G.L. Nesom var. pilosum Native SYPIP3

  hairy white oldfield aster · Asteraceae 36 counties
• 
  Symphyotrichum praealtum (Poir.) G.L. Nesom Native SYPR5

  willowleaf aster · Asteraceae 47 counties
• 
  Symphyotrichum praealtum (Poir.) G.L. Nesom var. praealtum Native SYPRP

  willowleaf aster · Asteraceae 47 counties
• 
  Symphyotrichum pratense (Raf.) G.L. Nesom Native SYPR7

  barrens silky aster · Asteraceae 15 counties
• 
  Symphyotrichum puniceum (L.) Á. Löve & D. Löve Native SYPU

  purplestem aster · Asteraceae 2 counties
• 
  Symphyotrichum puniceum (L.) Á. Löve & D. Löve var. scabricaule (Shinners) G.L. Nesom Native SYPUS

  purplestem aster · Asteraceae 2 counties
• 
  Symphyotrichum racemosum (Elliott) G.L. Nesom Native SYRA5

  smooth white oldfield aster · Asteraceae 30 counties
• 
  Symphyotrichum squamatum (Spreng.) G.L. Nesom Native SYSQ

  southeastern annual saltmarsh aster · Asteraceae 2 counties
• 
  Symphyotrichum subulatum (Michx.) G.L. Nesom Native SYSU5

  eastern annual saltmarsh aster · Asteraceae 14 counties
• 
  Symphyotrichum tenuifolium (L.) G.L. Nesom Native SYTE6

  perennial saltmarsh aster · Asteraceae 12 counties
• 
  Symphyotrichum undulatum (L.) G.L. Nesom Native SYUN

  wavyleaf aster · Asteraceae 5 counties
• 
  Symplocos tinctoria (L.) L'Hér. Native SYTI

  common sweetleaf · Symplocaceae 39 counties
• 
  Taenidia integerrima (L.) Drude Native TAIN

  yellow pimpernel · Apiaceae 5 counties
• 
  Talinum paniculatum (Jacq.) Gaertn. Native TAPA2

  jewels of Opar · Portulacaceae 4 counties
• 
  Taxodium ascendens Brongn. Native TAAS

  pond cypress · Cupressaceae 1 county
• 
  Taxodium distichum (L.) Rich. Native TADI2

  bald cypress · Cupressaceae 62 counties
• 
  Tephrosia florida (F.G. Dietr.) C.E. Wood Native TEFL

  Florida hoarypea · Fabaceae 3 counties
• 
  Tephrosia hispidula (Michx.) Pers. Native TEHI2

  sprawling hoarypea · Fabaceae 2 counties
• 
  Tephrosia onobrychoides Nutt. Native TEON

  multibloom hoarypea · Fabaceae 34 counties
• 
  Tephrosia spicata (Walter) Torr. & A. Gray Native TESP

  spiked hoarypea · Fabaceae 9 counties
• 
  Tephrosia virginiana (L.) Pers. Native TEVI

  Virginia tephrosia · Fabaceae 27 counties
• 
  Tetragonotheca ludoviciana (Torr. & A. Gray) A. Gray ex H.M. Hall Native TELU

  Louisiana nerveray · Asteraceae 5 counties
• 
  Teucrium canadense L. Native TECA3

  Canada germander · Lamiaceae 57 counties
• 
  Teucrium canadense L. var. canadense Native TECAC

  Canada germander · Lamiaceae 57 counties
• 
  Teucrium cubense Jacq. Native TECU

  small coastal germander · Lamiaceae 2 counties
• 
  Teucrium cubense Jacq. var. cubense Native TECUC

  small coastal germander · Lamiaceae 2 counties
• 
  Thalassia testudinum Banks & Sol. ex Koenig Native THTE6

  turtlegrass · Hydrocharitaceae 2 counties
• 
  Thalia dealbata Fraser ex Roscoe Native THDE

  powdery alligator-flag · Marantaceae 10 counties
• 
  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
• 
  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