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 2,151–2,200 of 3,739.

• 
  Nepeta cataria L. Introduced NECA2

  catnip · Lamiaceae 3 counties
• 
  Nephrolepis biserrata (Sw.) Schott Native NEBI

  giant swordfern · Dryopteridaceae 1 county
• 
  Nephrolepis exaltata (L.) Schott Native NEEX

  Boston swordfern · Dryopteridaceae 2 counties
• 
  Nephrolepis exaltata (L.) Schott ssp. exaltata Native NEEXE

  Boston swordfern · Dryopteridaceae 2 counties
• 
  Neptunia lutea (Leavenworth) Benth. Native NELU2

  yellow puff · Fabaceae 24 counties
• 
  Neptunia pubescens Benth. Native NEPU3

  tropical puff · Fabaceae 14 counties
• 
  Neptunia pubescens Benth. var. pubescens Native NEPUP

  tropical puff · Fabaceae 14 counties
• 
  Nerium oleander L. Introduced NEOL

  oleander · Apocynaceae 17 counties
• 
  Nicotiana longiflora Cav. Introduced NILO

  longflower tobacco · Solanaceae 4 counties
• 
  Nicotiana plumbaginifolia Viv. Introduced NIPL2

  Tex-Mex tobacco · Solanaceae 1 county
• 
  Nicotiana tabacum L. Introduced NITA

  cultivated tobacco · Solanaceae 3 counties
• 
  Nothoscordum bivalve (L.) Britton Native NOBI2

  crowpoison · Liliaceae 55 counties
• ⚘
  Nothoscordum borbonicum Kunth Introduced NOBO

  fragrant false garlic · Liliaceae 31 counties
• 
  Nuphar lutea (L.) Sm. Native NULU

  yellow pond-lily · Nymphaeaceae 27 counties
• 
  Nuphar lutea (L.) Sm. ssp. advena (Aiton) Kartesz & Gandhi Native NULUA

  yellow pond-lily · Nymphaeaceae 27 counties
• 
  Nuttallanthus canadensis (L.) D.A. Sutton Native NUCA

  Canada toadflax · Scrophulariaceae 61 counties
• 
  Nuttallanthus texanus (Scheele) D.A. Sutton Native NUTE

  Texas toadflax · Scrophulariaceae 35 counties
• 
  Nymphaea elegans Hook. Native NYEL

  tropical royalblue waterlily · Nymphaeaceae 4 counties
• 
  Nymphaea lotus L. Introduced NYLO

  white Egyptian lotus · Nymphaeaceae 2 counties
• 
  Nymphaea mexicana Zucc. Native NYME

  yellow waterlily · Nymphaeaceae 5 counties
• ⚘
  Nymphaea odorata Aiton Native NYOD

  American white waterlily · Nymphaeaceae 40 counties
• ⚘
  Nymphaea odorata Aiton ssp. odorata Native NYODO

  American white waterlily · Nymphaeaceae 40 counties
• ⚘
  Nymphaea ×thiona Ward [mexicana × odorata] Native NYTH

  waterlily · Nymphaeaceae 1 county
• 
  Nymphoides aquatica (J.F. Gmel.) Kuntze Native NYAQ

  big floatingheart · Menyanthaceae 5 counties
• 
  Nymphoides cordata (Elliott) Fernald Native NYCO

  little floatingheart · Menyanthaceae 1 county
• 
  Nyssa aquatica L. Native NYAQ2

  water tupelo · Cornaceae 46 counties
• 
  Nyssa biflora Walter Native NYBI

  swamp tupelo · Cornaceae 22 counties
• 
  Nyssa sylvatica Marshall Native NYSY

  blackgum · Cornaceae 47 counties
• 
  Obolaria virginica L. Native OBVI

  Virginia pennywort · Gentianaceae 15 counties
• 
  Ocimum basilicum L. Introduced OCBA

  sweet basil · Lamiaceae 2 counties
• 
  Oenothera biennis L. Native OEBI

  common evening primrose · Onagraceae 48 counties
• 
  Oenothera curtiflora W.L. Wagner & Hoch Native OECU2

  velvetweed · Onagraceae 39 counties
• 
  Oenothera drummondii Hook. Native OEDR

  beach evening primrose · Onagraceae 1 county
• 
  Oenothera filiformis (Small) W.L. Wagner & Hoch Native OEFI2

  longflower beeblossom · Onagraceae 37 counties
• 
  Oenothera filipes (Spach) W.L. Wagner & Hoch Native OEFI3

  slenderstalk beeblossom · Onagraceae 3 counties
• 
  Oenothera fruticosa L. Native OEFR

  narrowleaf evening primrose · Onagraceae 4 counties
• 
  Oenothera fruticosa L. ssp. fruticosa Native OEFRF

  narrowleaf evening primrose · Onagraceae 2 counties
• 
  Oenothera fruticosa L. ssp. tetragona (Roth) W.L. Wagner Native OEFRT

  narrowleaf evening primrose · Onagraceae 4 counties
• 
  Oenothera grandis (Britton) Smyth Native OEGR2

  showy evening primrose · Onagraceae 12 counties
• 
  Oenothera heterophylla Spach Native OEHE3

  variableleaf evening primrose · Onagraceae 8 counties
• 
  Oenothera heterophylla Spach ssp. heterophylla Native OEHEH

  variableleaf evening primrose · Onagraceae 8 counties
• 
  Oenothera humifusa Nutt. Native OEHU

  seabeach evening primrose · Onagraceae 5 counties
• 
  Oenothera laciniata Hill Native OELA

  cutleaf evening primrose · Onagraceae 63 counties
• 
  Oenothera lindheimeri (Engelm. & A. Gray) W.L. Wagner & Hoch Native OELI2

  Lindheimer's beeblossom · Onagraceae 19 counties
• 
  Oenothera linifolia Nutt. Native OELI

  threadleaf evening primrose · Onagraceae 33 counties
• 
  Oenothera patriciae W.L. Wagner & Hoch Native OEPA2

  plains beeblossom · Onagraceae 3 counties
• 
  Oenothera pilosella Raf. Native OEPI2

  meadow evening primrose · Onagraceae 16 counties
• 
  Oenothera pilosella Raf. ssp. pilosella Native OEPIP

  meadow evening primrose · Onagraceae 16 counties
• 
  Oenothera pilosella Raf. ssp. sessilis (Pennell) Straley Native OEPIS

  meadow evening primrose · Onagraceae 1 county
• 
  Oenothera rhombipetala Nutt. ex Torr. & A. Gray Native OERH

  fourpoint evening primrose · Onagraceae 3 counties