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 2,951–3,000 of 3,739.

• 
  Sagittaria australis (J.G. Sm.) Small Native SAAU2

  longbeak arrowhead · Alismataceae 1 county
• 
  Sagittaria calycina Engelm. Native SACA21

  hooded arrowhead · Alismataceae 37 counties
• 
  Sagittaria calycina Engelm. var. calycina Native SACAC

  hooded arrowhead · Alismataceae 37 counties
• 
  Sagittaria graminea Michx. Native SAGR

  grassy arrowhead · Alismataceae 37 counties
• 
  Sagittaria guayanensis Kunth Introduced SAGU

  Guyanese arrowhead · Alismataceae 2 counties
• 
  Sagittaria lancifolia L. Native SALA

  bulltongue arrowhead · Alismataceae 14 counties
• 
  Sagittaria lancifolia L. ssp. media (Micheli) Bogin Native SALAM2

  bulltongue arrowhead · Alismataceae 14 counties
• 
  Sagittaria latifolia Willd. Native SALA2

  broadleaf arrowhead · Alismataceae 44 counties
• 
  Sagittaria papillosa Buchenau Native SAPA2

  nipplebract arrowhead · Alismataceae 22 counties
• 
  Sagittaria platyphylla (Engelm.) J.G. Sm. Native SAPL

  delta arrowhead · Alismataceae 64 counties
• 
  Sagittaria subulata (L.) Buchenau Native SASU

  awl-leaf arrowhead · Alismataceae 1 county
• 
  Salicornia bigelovii Torr. Native SABI

  dwarf saltwort · Chenopodiaceae 9 counties
• 
  Salicornia depressa Standl. Native SADE10

  Virginia glasswort · Chenopodiaceae 6 counties
• 
  Salix caroliniana Michx. Native SACA5

  coastal plain willow · Salicaceae 5 counties
• 
  Salix cinerea L. Introduced SACI

  large gray willow · Salicaceae 4 counties
• 
  Salix humilis Marshall Native SAHU2

  prairie willow · Salicaceae 8 counties
• 
  Salix humilis Marshall var. humilis Native SAHUH

  prairie willow · Salicaceae 7 counties
• 
  Salix humilis Marshall var. tristis (Aiton) Griggs Native SAHUT

  prairie willow · Salicaceae 1 county
• 
  Salix interior Rowlee Native SAIN3

  sandbar willow · Salicaceae 42 counties
• 
  Salix nigra Marshall Native SANI

  black willow · Salicaceae 63 counties
• ⚘
  Salix ×sepulcralis Simonkai [alba × babylonica] Introduced SASE10

  weeping willow · Salicaceae 23 counties
• 
  Salpichroa origanifolia (Lam.) Thell. Introduced SAOR4

  lily of the valley vine · Solanaceae 3 counties
• 
  Salsola kali L. Introduced SAKA

  Russian thistle · Chenopodiaceae 6 counties
• 
  Salsola kali L. ssp. pontica (Pall.) Mosyakin Introduced SAKAP

  Russian thistle · Chenopodiaceae 6 counties
• 
  Salvia azurea Michx. ex Lam. Native SAAZ

  azure blue sage · Lamiaceae 31 counties
• 
  Salvia azurea Michx. ex Lam. var. grandiflora Benth. Native SAAZG

  pitcher sage · Lamiaceae 31 counties
• 
  Salvia coccinea P.J. Buchoz ex Etlinger Native SACO5

  blood sage · Lamiaceae 21 counties
• 
  Salvia farinacea Benth. Native SAFA2

  mealycup sage · Lamiaceae 2 counties
• 
  Salvia lyrata L. Native SALY2

  lyreleaf sage · Lamiaceae 56 counties
• 
  Salvia reflexa Hornem. Native SARE3

  lanceleaf sage · Lamiaceae 3 counties
• 
  Salvinia minima Baker Introduced SAMI7

  water spangles · Salviniaceae 14 counties
• 
  Salvinia molesta Mitchell Introduced SAMO5

  kariba-weed · Salviniaceae 13 counties
• 
  Sambucus nigra L. Both SANI4

  black elderberry · Caprifoliaceae 64 counties
• 
  Sambucus nigra L. ssp. canadensis (L.) R. Bolli Native SANIC4

  American black elderberry · Caprifoliaceae 64 counties
• 
  Samolus ebracteatus Kunth Native SAEB2

  limewater brookweed · Primulaceae 2 counties
• 
  Samolus ebracteatus Kunth ssp. alyssoides (A. Heller) R. Knuth Native SAEBA

  limewater brookweed · Primulaceae 2 counties
• 
  Samolus valerandi L. Both SAVA3

  seaside brookweed · Primulaceae 57 counties
• 
  Samolus valerandi L. ssp. parviflorus (Raf.) Hultén Native SAVAP

  seaside brookweed · Primulaceae 57 counties
• 
  Sanguinaria canadensis L. Native SACA13

  bloodroot · Papaveraceae 6 counties
• 
  Sanicula canadensis L. Native SACA15

  Canadian blacksnakeroot · Apiaceae 64 counties
• 
  Sanicula canadensis L. var. canadensis Native SACAC2

  Canadian blacksnakeroot · Apiaceae 64 counties
• 
  Sanicula marilandica L. Native SAMA2

  Maryland sanicle · Apiaceae 3 counties
• 
  Sanicula odorata (Raf.) K.M. Pryer & L.R. Phillippe Native SAOD

  clustered blacksnakeroot · Apiaceae 13 counties
• 
  Sanicula smallii E.P. Bicknell Native SASM

  Small's blacksnakeroot · Apiaceae 24 counties
• 
  Santolina chamaecyparissus L. Introduced SACH2

  lavender cotton · Asteraceae 4 counties
• 
  Sapindus saponaria L. Native SASA4

  wingleaf soapberry · Sapindaceae 24 counties
• 
  Sapindus saponaria L. var. drummondii (Hook. & Arn.) L.D. Benson Native SASAD

  western soapberry · Sapindaceae 24 counties
• 
  Saponaria officinalis L. Introduced SAOF4

  bouncingbet · Caryophyllaceae 20 counties
• 
  Sarcocornia perennis (Mill.) A.J. Scott Native SAPE11

  chickenclaws · Chenopodiaceae 1 county
• 
  Sarracenia alata Alph. Wood Native SAAL4

  yellow trumpets · Sarraceniaceae 11 counties