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 101–150 of 3,739.

• 
  Alopecurus myosuroides Huds. Introduced ALMY

  slender meadow foxtail · Poaceae 1 county
• 
  Alophia drummondii (Graham) R.C. Foster Native ALDR2

  propeller flower · Iridaceae 22 counties
• 
  Alstroemeria psittacina Lehm., nom. inq. Introduced ALPS

  lily of the Incas · Liliaceae 10 counties
• 
  Alternanthera caracasana Kunth Introduced ALCA5

  washerwoman · Amaranthaceae 5 counties
• 
  Alternanthera paronychioides A. St.-Hil. Both ALPA17

  smooth joyweed · Amaranthaceae 28 counties
• 
  Alternanthera paronychioides A. St.-Hil. var. amazonica Huber Introduced ALPAA2

  smooth joyweed · Amaranthaceae 2 counties
• 
  Alternanthera paronychioides A. St.-Hil. var. paronychioides Native ALPAP

  smooth joyweed · Amaranthaceae 27 counties
• 
  Alternanthera philoxeroides (Mart.) Griseb. Introduced ALPH

  alligatorweed · Amaranthaceae 57 counties
• 
  Alternanthera sessilis (L.) R. Br. ex DC. Introduced ALSE4

  sessile joyweed · Amaranthaceae 10 counties
• 
  Alysicarpus vaginalis (L.) DC. Introduced ALVA2

  white moneywort · Fabaceae 15 counties
• 
  Alyssum alyssoides (L.) L. Introduced ALAL3

  pale madwort · Brassicaceae 3 counties
• 
  Amaranthus albus L. Introduced AMAL

  prostrate pigweed · Amaranthaceae 21 counties
• 
  Amaranthus arenicola I.M. Johnst. Native AMAR

  sandhill amaranth · Amaranthaceae 23 counties
• 
  Amaranthus australis (A. Gray) Sauer Native AMAU

  southern amaranth · Amaranthaceae 20 counties
• 
  Amaranthus blitoides S. Watson Introduced AMBL

  mat amaranth · Amaranthaceae 3 counties
• 
  Amaranthus blitum L. Introduced AMBL2

  purple amaranth · Amaranthaceae 4 counties
• 
  Amaranthus blitum L. var. emarginatus (Salzm. ex Uline & W.L. Bray) Lambinon Introduced AMBLE2

  purple amaranth · Amaranthaceae 4 counties
• 
  Amaranthus cannabinus (L.) Sauer Native AMCA2

  tidalmarsh amaranth · Amaranthaceae 3 counties
• 
  Amaranthus deflexus L. Introduced AMDE

  largefruit amaranth · Amaranthaceae 1 county
• 
  Amaranthus greggii S. Watson Native AMGR2

  Gregg's amaranth · Amaranthaceae 2 counties
• 
  Amaranthus hybridus L. Native AMHY

  slim amaranth · Amaranthaceae 51 counties
• 
  Amaranthus palmeri S. Watson Native AMPA

  carelessweed · Amaranthaceae 27 counties
• 
  Amaranthus powellii S. Watson Native AMPO2

  Powell's amaranth · Amaranthaceae 1 county
• 
  Amaranthus powellii S. Watson ssp. powellii Native AMPOP

  Powell's amaranth · Amaranthaceae 1 county
• 
  Amaranthus retroflexus L. Native AMRE

  redroot amaranth · Amaranthaceae 30 counties
• 
  Amaranthus spinosus L. Native AMSP

  spiny amaranth · Amaranthaceae 55 counties
• 
  Amaranthus tricolor L. Introduced AMTR2

  Joseph's-coat · Amaranthaceae 1 county
• 
  Amaranthus tuberculatus (Moq.) Sauer Native AMTU

  roughfruit amaranth · Amaranthaceae 38 counties
• 
  Amaranthus viridis L. Native AMVI

  slender amaranth · Amaranthaceae 55 counties
• 
  Amaryllis belladonna L. Introduced AMBE3

  belladonna lily · Liliaceae 6 counties
• 
  Ambrosia artemisiifolia L. Both AMAR2

  annual ragweed · Asteraceae 59 counties
• 
  Ambrosia artemisiifolia L. var. paniculata (Michx.) Blank. Native AMARP

  annual ragweed · Asteraceae 59 counties
• 
  Ambrosia bidentata Michx. Native AMBI2

  lanceleaf ragweed · Asteraceae 21 counties
• 
  Ambrosia psilostachya DC. Native AMPS

  Cuman ragweed · Asteraceae 38 counties
• 
  Ambrosia trifida L. Native AMTR

  great ragweed · Asteraceae 63 counties
• 
  Ambrosia trifida L. var. texana Scheele Native AMTRT

  Texan great ragweed · Asteraceae 1 county
• 
  Amelanchier arborea (Michx. f.) Fernald Native AMAR3

  common serviceberry · Rosaceae 25 counties
• 
  Amelanchier arborea (Michx. f.) Fernald var. arborea Native AMARA4

  common serviceberry · Rosaceae 25 counties
• 
  Amianthium muscitoxicum (Walter) A. Gray Native AMMU

  flypoison · Liliaceae 2 counties
• 
  Ammannia auriculata Willd. Native AMAU2

  eared redstem · Lythraceae 14 counties
• 
  Ammannia coccinea Rottb. Native AMCO

  valley redstem · Lythraceae 60 counties
• 
  Ammannia latifolia L. Native AMLA3

  pink redstem · Lythraceae 3 counties
• 
  Ammi majus L. Introduced AMMA

  large bullwort · Apiaceae 1 county
• 
  Ammoselinum butleri (Engelm. ex S. Watson) J.M. Coult. & Rose Native AMBU

  Butler's sandparsley · Apiaceae 10 counties
• 
  Amorpha fruticosa L. Native AMFR

  false indigo bush · Fabaceae 46 counties
• 
  Amorpha laevigata Nutt. Native AMLA2

  smooth false indigo · Fabaceae 2 counties
• 
  Amorpha nitens Boynt. Native AMNI

  shining false indigo · Fabaceae 3 counties
• 
  Amorpha paniculata Torr. & A. Gray Native AMPA4

  panicled false indigo · Fabaceae 8 counties
• 
  Ampelopsis cordata Michx. Native AMCO2

  heartleaf peppervine · Vitaceae 49 counties
• 
  Amphiachyris dracunculoides (DC.) Nutt. Native AMDR

  prairie broomweed · Asteraceae 1 county