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 2,351–2,400 of 3,739.

• 
  Passiflora incarnata L. Native PAIN6

  purple passionflower · Passifloraceae 60 counties
• 
  Passiflora lutea L. Native PALU2

  yellow passionflower · Passifloraceae 59 counties
• 
  Pastinaca sativa L. Introduced PASA2

  wild parsnip · Apiaceae 1 county
• 
  Paulownia tomentosa (Thunb.) Siebold & Zucc. ex Steud. Introduced PATO2

  princesstree · Scrophulariaceae 16 counties
• 
  Pectis prostrata Cav. Native PEPR

  spreading chinchweed · Asteraceae 2 counties
• 
  Pedicularis canadensis L. Native PECA

  Canadian lousewort · Scrophulariaceae 29 counties
• 
  Pedicularis canadensis L. ssp. canadensis Native PECAC3

  Canadian lousewort · Scrophulariaceae 29 counties
• 
  Pediomelum digitatum (Nutt. ex Torr. & A. Gray) Isely Native PEDI9

  palmleaf Indian breadroot · Fabaceae 1 county
• 
  Pediomelum esculentum (Pursh) Rydb. Native PEES

  large Indian breadroot · Fabaceae 1 county
• 
  Pediomelum hypogaeum (Nutt. ex Torr. & A. Gray) Rydb. Native PEHY4

  subterranean Indian breadroot · Fabaceae 3 counties
• 
  Pediomelum hypogaeum (Nutt. ex Torr. & A. Gray) Rydb. var. subulatum (Bush) J. Grimes Native PEHYS2

  subterranean Indian breadroot · Fabaceae 3 counties
• 
  Pediomelum rhombifolium (Torr. & A. Gray) Rydb. Native PERH2

  Gulf Indian breadroot · Fabaceae 1 county
• 
  Pellaea atropurpurea (L.) Link Native PEAT2

  purple cliffbrake · Pteridaceae 1 county
• 
  Pellaea glabella Mett. ex Kuhn Native PEGL

  smooth cliffbrake · Pteridaceae 1 county
• 
  Peltandra sagittifolia (Michx.) Morong Native PESA7

  white arrow arum · Araceae 1 county
• 
  Peltandra virginica (L.) Schott Native PEVI

  green arrow arum · Araceae 22 counties
• 
  Pennisetum ciliare (L.) Link Introduced PECI

  buffelgrass · Poaceae 2 counties
• 
  Pennisetum glaucum (L.) R. Br. Introduced PEGL2

  pearl millet · Poaceae 20 counties
• 
  Pennisetum setaceum (Forssk.) Chiov. Introduced PESE3

  crimson fountaingrass · Poaceae 2 counties
• 
  Penstemon digitalis Nutt. ex Sims Native PEDI

  foxglove beardtongue · Scrophulariaceae 26 counties
• 
  Penstemon laevigatus Aiton Native PELA8

  eastern smooth beardtongue · Scrophulariaceae 2 counties
• 
  Penstemon laxiflorus Pennell Native PELA10

  nodding beardtongue · Scrophulariaceae 33 counties
• 
  Penstemon murrayanus Hook. Native PEMU2

  scarlet beardtongue · Scrophulariaceae 4 counties
• 
  Penstemon tenuis Small Native PETE3

  sharpsepal beardtongue · Scrophulariaceae 30 counties
• 
  Penstemon tubaeflorus Nutt. Native PETU

  white wand beardtongue · Scrophulariaceae 9 counties
• 
  Penstemon tubaeflorus Nutt. var. tubaeflorus Native PETUT

  white wand beardtongue · Scrophulariaceae 9 counties
• 
  Penthorum sedoides L. Native PESE6

  ditch stonecrop · Crassulaceae 57 counties
• 
  Pentodon pentandrus (Schumach. & Thonn.) Vatke Native PEPE14

  Hale's pentodon · Rubiaceae 17 counties
• 
  Perilla frutescens (L.) Britton Introduced PEFR4

  beefsteakplant · Lamiaceae 47 counties
• 
  Perilla frutescens (L.) Britton var. frutescens Introduced PEFRF2

  beefsteakplant · Lamiaceae 46 counties
• 
  Persea borbonia (L.) Spreng. Native PEBO

  redbay · Lauraceae 2 counties
• 
  Persea palustris (Raf.) Sarg. Native PEPA37

  swamp bay · Lauraceae 23 counties
• 
  Petroselinum crispum (Mill.) Nyman ex A.W. Hill Introduced PECR2

  parsley · Apiaceae 3 counties
• 
  Petunia axillaris (Lam.) Britton, Sterns & Poggenb. Introduced PEAX

  large white petunia · Solanaceae 24 counties
• 
  Phacelia dubia (L.) Trel. Native PHDU

  smallflower phacelia · Hydrophyllaceae 1 county
• 
  Phacelia dubia (L.) Trel. var. dubia Native PHDUD

  smallflower phacelia · Hydrophyllaceae 1 county
• 
  Phacelia glabra Nutt. Native PHGL

  smooth phacelia · Hydrophyllaceae 3 counties
• 
  Phacelia hirsuta Nutt. Native PHHI

  fuzzy phacelia · Hydrophyllaceae 9 counties
• 
  Phacelia strictiflora (Engelm. & A. Gray) A. Gray Native PHST

  prairie phacelia · Hydrophyllaceae 3 counties
• 
  Phacelia strictiflora (Engelm. & A. Gray) A. Gray var. robbinsii Constance Native PHSTR

  Robbins' phacelia · Hydrophyllaceae 3 counties
• 
  Phalaris angusta Nees ex Trin. Native PHAN2

  timothy canarygrass · Poaceae 36 counties
• 
  Phalaris brachystachys Link Introduced PHBR3

  shortspike canarygrass · Poaceae 1 county
• 
  Phalaris canariensis L. Introduced PHCA5

  annual canarygrass · Poaceae 4 counties
• 
  Phalaris caroliniana Walter Native PHCA6

  Carolina canarygrass · Poaceae 59 counties
• 
  Phalaris minor Retz. Introduced PHMI3

  littleseed canarygrass · Poaceae 1 county
• 
  Phalaris paradoxa L. Introduced PHPA5

  hood canarygrass · Poaceae 2 counties
• 
  Phanopyrum gymnocarpon (Elliott) Nash Native PHGY2

  savannah-panicgrass · Poaceae 59 counties
• 
  Phaseolus polystachios (L.) Britton, Sterns & Poggenb. Native PHPO2

  thicket bean · Fabaceae 16 counties
• 
  Phaseolus polystachios (L.) Britton, Sterns & Poggenb. var. polystachios Native PHPOP

  thicket bean · Fabaceae 16 counties
• 
  Phegopteris hexagonoptera (Michx.) Fée Native PHHE11

  broad beechfern · Thelypteridaceae 32 counties