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 2,251–2,300 of 3,739.

• 
  Ottelia alismoides (L.) Pers. Introduced OTAL

  ducklettuce · Hydrocharitaceae 6 counties
• 
  Oxalis corniculata L. Native OXCO

  creeping woodsorrel · Oxalidaceae 37 counties
• 
  Oxalis debilis Kunth Introduced OXDE3

  pink woodsorrel · Oxalidaceae 32 counties
• 
  Oxalis debilis Kunth var. corymbosa (DC.) Lourteig Introduced OXDEC

  pink woodsorrel · Oxalidaceae 32 counties
• 
  Oxalis dillenii Jacq. Native OXDI2

  slender yellow woodsorrel · Oxalidaceae 1 county
• 
  Oxalis priceae Small Native OXPR

  tufted yellow woodsorrel · Oxalidaceae 6 counties
• 
  Oxalis priceae Small ssp. texana (Small) Eiten Native OXPRT

  Texas woodsorrel · Oxalidaceae 6 counties
• 
  Oxalis rubra A. St.-Hil. Introduced OXRU

  windowbox woodsorrel · Oxalidaceae 36 counties
• 
  Oxalis stricta L. Native OXST

  common yellow oxalis · Oxalidaceae 55 counties
• 
  Oxalis violacea L. Native OXVI

  violet woodsorrel · Oxalidaceae 25 counties
• 
  Oxycaryum cubense (Poepp. & Kunth) Lye Native OXCU2

  Cuban bulrush · Cyperaceae 9 counties
• 
  Oxydendrum arboreum (L.) DC. Native OXAR

  sourwood · Ericaceae 17 counties
• 
  Oxypolis filiformis (Walter) Britton Native OXFI

  water cowbane · Apiaceae 9 counties
• 
  Oxypolis rigidior (L.) Raf. Native OXRI

  stiff cowbane · Apiaceae 20 counties
• 
  Pachysandra procumbens Michx. Native PAPR7

  Allegheny-spurge · Buxaceae 2 counties
• 
  Packera anonyma (Alph. Wood) W.A. Weber & Á. Löve Native PAAN6

  Small's ragwort · Asteraceae 6 counties
• 
  Packera glabella (Poir.) C. Jeffrey Native PAGL17

  butterweed · Asteraceae 63 counties
• 
  Packera obovata (Muhl. ex Willd.) W.A. Weber & Á. Löve Native PAOB6

  roundleaf ragwort · Asteraceae 11 counties
• 
  Packera plattensis (Nutt.) W.A. Weber & Á. Löve Native PAPL12

  prairie groundsel · Asteraceae 15 counties
• 
  Packera tampicana (DC.) C. Jeffrey Native PATA5

  Great Plains ragwort · Asteraceae 12 counties
• 
  Packera tomentosa (Michx.) C. Jeffrey Native PATO4

  woolly ragwort · Asteraceae 23 counties
• 
  Paederia foetida L. Introduced PAFO3

  stinkvine · Rubiaceae 4 counties
• 
  Palafoxia callosa (Nutt.) Torr. & A. Gray Native PACA3

  small palafox · Asteraceae 1 county
• 
  Palafoxia texana DC. Native PATE

  Texas palafox · Asteraceae 2 counties
• 
  Palafoxia texana DC. var. ambigua (Shinners) B.L. Turner & Morris Native PATEA

  Texas palafox · Asteraceae 2 counties
• 
  Panax quinquefolius L. Native PAQU

  American ginseng · Araliaceae 1 county
• 
  Panicum amarum Elliott Native PAAM2

  bitter panicgrass · Poaceae 7 counties
• 
  Panicum anceps Michx. Native PAAN

  beaked panicgrass · Poaceae 50 counties
• 
  Panicum bergii Arechav. Introduced PABE4

  Berg's panicgrass · Poaceae 1 county
• 
  Panicum brachyanthum Steud. Native PABR2

  prairie panicgrass · Poaceae 25 counties
• 
  Panicum capillare L. Native PACA6

  witchgrass · Poaceae 26 counties
• 
  Panicum dichotomiflorum Michx. Native PADI

  fall panicgrass · Poaceae 60 counties
• 
  Panicum dichotomiflorum Michx. var. dichotomiflorum Native PADID

  fall panicgrass · Poaceae 60 counties
• 
  Panicum diffusum Sw. Native PADI7

  West Indian panicgrass · Poaceae 1 county
• 
  Panicum flexile (Gattinger) Scribn. Native PAFL2

  wiry panicgrass · Poaceae 5 counties
• 
  Panicum hallii Vasey Native PAHA

  Hall's panicgrass · Poaceae 3 counties
• 
  Panicum hallii Vasey var. filipes (Scribn.) Waller Native PAHAF

  Hall's panicgrass · Poaceae 3 counties
• 
  Panicum hemitomon Schult. Native PAHE2

  maidencane · Poaceae 32 counties
• 
  Panicum miliaceum L. Introduced PAMI2

  proso millet · Poaceae 2 counties
• 
  Panicum miliaceum L. ssp. miliaceum Introduced PAMIM

  broomcorn millet · Poaceae 2 counties
• 
  Panicum repens L. Introduced PARE3

  torpedo grass · Poaceae 24 counties
• 
  Panicum rigidulum Bosc ex Nees Native PARI4

  redtop panicgrass · Poaceae 56 counties
• 
  Panicum rigidulum Bosc ex Nees var. combsii (Scribn. & C.R. Ball) Lelong Native PARIC

  Combs' panicgrass · Poaceae 3 counties
• 
  Panicum rigidulum Bosc ex Nees var. pubescens (Vasey) Lelong Native PARIP

  redtop panicgrass · Poaceae 13 counties
• 
  Panicum rigidulum Bosc ex Nees var. rigidulum Native PARIR

  redtop panicgrass · Poaceae 54 counties
• 
  Panicum tenerum Bey. ex Trin. Native PATE3

  bluejoint panicgrass · Poaceae 5 counties
• 
  Panicum verrucosum Muhl. Native PAVE2

  warty panicgrass · Poaceae 34 counties
• 
  Panicum virgatum L. Native PAVI2

  switchgrass · Poaceae 39 counties
• 
  Panicum virgatum L. var. virgatum Native PAVIV

  switchgrass · Poaceae 39 counties
• 
  Papaver orientale L. Introduced PAOR5

  Oriental poppy · Papaveraceae 2 counties