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 151–200 of 2,926 (native).

• 
  Arisaema triphyllum (L.) Schott Native ARTR

  Jack in the pulpit · Araceae 43 counties
• 
  Arisaema triphyllum (L.) Schott ssp. pusillum (Peck) Huttleston Native ARTRP

  Jack in the pulpit · Araceae 18 counties
• 
  Arisaema triphyllum (L.) Schott ssp. quinatum (Buckley) Huttleston Native ARTRQ

  Jack in the pulpit · Araceae 25 counties
• 
  Arisaema triphyllum (L.) Schott ssp. triphyllum Native ARTRT3

  Jack in the pulpit · Araceae 42 counties
• 
  Aristida desmantha Trin. & Rupr. Native ARDE3

  curly threeawn · Poaceae 6 counties
• 
  Aristida dichotoma Michx. Native ARDI4

  churchmouse threeawn · Poaceae 20 counties
• 
  Aristida dichotoma Michx. var. dichotoma Native ARDID

  churchmouse threeawn · Poaceae 20 counties
• 
  Aristida lanosa Muhl. ex Elliott Native ARLA6

  woollysheath threeawn · Poaceae 19 counties
• 
  Aristida longespica Poir. Native ARLO16

  slimspike threeawn · Poaceae 44 counties
• 
  Aristida longespica Poir. var. geniculata (Raf.) Fernald Native ARLOG6

  slimspike threeawn · Poaceae 31 counties
• 
  Aristida longespica Poir. var. longespica Native ARLOL3

  slimspike threeawn · Poaceae 41 counties
• 
  Aristida oligantha Michx. Native AROL

  prairie threeawn · Poaceae 43 counties
• 
  Aristida palustris (Chapm.) Vasey Native ARPA26

  longleaf threeawn · Poaceae 7 counties
• 
  Aristida purpurascens Poir. Native ARPU8

  arrowfeather threeawn · Poaceae 40 counties
• 
  Aristida purpurascens Poir. var. purpurascens Native ARPUP4

  arrowfeather threeawn · Poaceae 40 counties
• 
  Aristida purpurascens Poir. var. virgata (Trin.) Allred Native ARPUV

  arrowfeather threeawn · Poaceae 24 counties
• 
  Aristida purpurea Nutt. Native ARPU9

  purple threeawn · Poaceae 2 counties
• 
  Aristida purpurea Nutt. var. longiseta (Steud.) Vasey Native ARPUL

  Fendler threeawn · Poaceae 1 county
• 
  Aristida purpurea Nutt. var. purpurea Native ARPUP6

  purple threeawn · Poaceae 2 counties
• 
  Aristolochia reticulata Jacq. Native ARRE3

  Texas dutchman's pipe · Aristolochiaceae 20 counties
• 
  Aristolochia serpentaria L. Native ARSE3

  Virginia snakeroot · Aristolochiaceae 38 counties
• 
  Aristolochia tomentosa Sims Native ARTO3

  woolly dutchman's pipe · Aristolochiaceae 9 counties
• 
  Arnoglossum atriplicifolium (L.) H. Rob. Native ARAT

  pale Indian plantain · Asteraceae 1 county
• 
  Arnoglossum ovatum (Walter) H. Rob. Native AROV

  ovateleaf cacalia · Asteraceae 17 counties
• 
  Arnoglossum plantagineum Raf. Native ARPL4

  groovestem Indian plantain · Asteraceae 22 counties
• 
  Aronia arbutifolia (L.) Pers. Native ARAR7

  red chokeberry · Rosaceae 27 counties
• 
  Artemisia ludoviciana Nutt. ssp. ludoviciana Native ARLUL2

  white sagebrush · Asteraceae 14 counties
• 
  Arundinaria gigantea (Walter) Muhl. Native ARGI

  giant cane · Poaceae 58 counties
• 
  Asarum canadense L. Native ASCA

  Canadian wildginger · Aristolochiaceae 1 county
• 
  Asclepias amplexicaulis Sm. Native ASAM

  clasping milkweed · Asclepiadaceae 25 counties
• 
  Asclepias hirtella (Pennell) Woodson Native ASHI

  green milkweed · Asclepiadaceae 3 counties
• 
  Asclepias humistrata Walter Native ASHU3

  pinewoods milkweed · Asclepiadaceae 2 counties
• 
  Asclepias incarnata L. Native ASIN

  swamp milkweed · Asclepiadaceae 5 counties
• 
  Asclepias incarnata L. ssp. incarnata Native ASINI

  swamp milkweed · Asclepiadaceae 5 counties
• 
  Asclepias lanceolata Walter Native ASLA2

  fewflower milkweed · Asclepiadaceae 12 counties
• 
  Asclepias longifolia Michx. Native ASLO

  longleaf milkweed · Asclepiadaceae 19 counties
• 
  Asclepias michauxii Decne. Native ASMI12

  Michaux's milkweed · Asclepiadaceae 3 counties
• 
  Asclepias obovata Elliott Native ASOB

  pineland milkweed · Asclepiadaceae 19 counties
• 
  Asclepias oenotheroides Cham. & Schltdl. Native ASOE

  zizotes milkweed · Asclepiadaceae 1 county
• 
  Asclepias perennis Walter Native ASPE

  aquatic milkweed · Asclepiadaceae 56 counties
• 
  Asclepias purpurascens L. Native ASPU2

  purple milkweed · Asclepiadaceae 2 counties
• 
  Asclepias rubra L. Native ASRU

  red milkweed · Asclepiadaceae 4 counties
• 
  Asclepias stenophylla A. Gray Native ASST

  slimleaf milkweed · Asclepiadaceae 1 county
• 
  Asclepias syriaca L. Native ASSY

  common milkweed · Asclepiadaceae 3 counties
• 
  Asclepias tuberosa L. Native ASTU

  butterfly milkweed · Asclepiadaceae 35 counties
• 
  Asclepias tuberosa L. ssp. interior Woodson Native ASTUI

  butterfly milkweed · Asclepiadaceae 35 counties
• 
  Asclepias variegata L. Native ASVA

  redring milkweed · Asclepiadaceae 36 counties
• 
  Asclepias verticillata L. Native ASVE

  whorled milkweed · Asclepiadaceae 26 counties
• 
  Asclepias viridiflora Raf. Native ASVI

  green comet milkweed · Asclepiadaceae 17 counties
• 
  Asclepias viridis Walter Native ASVI2

  green antelopehorn · Asclepiadaceae 34 counties