Wisconsin

• Adams 55001
  1,200 taxa Open ↗
• Ashland 55003
  1,200 taxa Open ↗
• Barron 55005
  823 taxa Open ↗
• Bayfield 55007
  1,332 taxa Open ↗
• Brown 55009
  1,537 taxa Open ↗
• Buffalo 55011
  853 taxa Open ↗
• Burnett 55013
  863 taxa Open ↗
• Calumet 55015
  578 taxa Open ↗
• Chippewa 55017
  984 taxa Open ↗
• Clark 55019
  762 taxa Open ↗

Showing 1,951–2,000 of 3,207.

• 
  Nelumbo lutea Willd. Native NELU

  American lotus · Nelumbonaceae 11 counties
• 
  Neobeckia aquatica (Eaton) Greene Native NEAQ2

  lakecress · Brassicaceae 8 counties
• 
  Nepeta cataria L. Introduced NECA2

  catnip · Lamiaceae 55 counties
• 
  Nepeta racemosa Lam. Introduced NERA2

  raceme catnip · Lamiaceae 1 county
• 
  Neslia paniculata (L.) Desv. Introduced NEPA3

  ballmustard · Brassicaceae 5 counties
• 
  Nicandra physalodes (L.) Scop. Introduced NIPH

  apple of Peru · Solanaceae 5 counties
• 
  Nothocalais cuspidata (Pursh) Greene Native NOCU

  prairie false dandelion · Asteraceae 13 counties
• 
  Nuphar lutea (L.) Sm. Native NULU

  yellow pond-lily · Nymphaeaceae 64 counties
• 
  Nuphar lutea (L.) Sm. ssp. advena (Aiton) Kartesz & Gandhi Native NULUA

  yellow pond-lily · Nymphaeaceae 7 counties
• 
  Nuphar lutea (L.) Sm. ssp. pumila (Timm) E.O. Beal Native NULUP2

  yellow pond-lily · Nymphaeaceae 9 counties
• 
  Nuphar lutea (L.) Sm. ssp. rubrodisca (Morong) Hellquist & Wiersema Native NULUR

  yellow pond-lily · Nymphaeaceae 10 counties
• 
  Nuphar lutea (L.) Sm. ssp. variegata (Durand) E.O. Beal Native NULUV

  varigated yellow pond-lily · Nymphaeaceae 63 counties
• 
  Nuttallanthus canadensis (L.) D.A. Sutton Native NUCA

  Canada toadflax · Scrophulariaceae 33 counties
• ⚘
  Nymphaea odorata Aiton Native NYOD

  American white waterlily · Nymphaeaceae 58 counties
• ⚘
  Nymphaea odorata Aiton ssp. odorata Native NYODO

  American white waterlily · Nymphaeaceae 6 counties
• ⚘
  Nymphaea odorata Aiton ssp. tuberosa (Paine) Wiersma & Hellquist Native NYODT

  American white waterlily · Nymphaeaceae 55 counties
• 
  Nyssa sylvatica Marshall Native NYSY

  blackgum · Cornaceae 1 county
• 
  Ocimum basilicum L. Introduced OCBA

  sweet basil · Lamiaceae 1 county
• 
  Odontites vernus (Bellardi) Dumort. Introduced ODVE

  red bartsia · Scrophulariaceae 9 counties
• 
  Odontites vernus (Bellardi) Dumort. ssp. serotinus (Dumort.) Corb. Introduced ODVES

  red bartsia · Scrophulariaceae 9 counties
• 
  Oenothera biennis L. Native OEBI

  common evening primrose · Onagraceae 68 counties
• 
  Oenothera clelandii W. Dietr., P.H. Raven & W.L. Wagner Native OECL3

  Cleland's evening primrose · Onagraceae 27 counties
• 
  Oenothera filiformis (Small) W.L. Wagner & Hoch Native OEFI2

  longflower beeblossom · Onagraceae 5 counties
• 
  Oenothera gaura W.L. Wagner & Hoch Native OEGA

  biennial beeblossom · Onagraceae 11 counties
• 
  Oenothera glazioviana Micheli Introduced OEGL

  redsepal evening primrose · Onagraceae 2 counties
• 
  Oenothera laciniata Hill Native OELA

  cutleaf evening primrose · Onagraceae 9 counties
• 
  Oenothera nuttallii Sweet Native OENU

  Nuttall's evening primrose · Onagraceae 11 counties
• 
  Oenothera oakesiana (A. Gray) J.W. Robbins ex S. Watson & J.M. Coult. Native OEOA

  Oakes' evening primrose · Onagraceae 40 counties
• 
  Oenothera parviflora L. Native OEPA5

  northern evening primrose · Onagraceae 64 counties
• 
  Oenothera perennis L. Native OEPE

  little evening primrose · Onagraceae 45 counties
• 
  Oenothera pilosella Raf. Native OEPI2

  meadow evening primrose · Onagraceae 9 counties
• 
  Oenothera pilosella Raf. ssp. pilosella Native OEPIP

  meadow evening primrose · Onagraceae 9 counties
• 
  Oenothera rhombipetala Nutt. ex Torr. & A. Gray Native OERH

  fourpoint evening primrose · Onagraceae 5 counties
• 
  Oenothera suffrutescens (Ser.) W.L. Wagner & Hoch Native OESU3

  scarlet beeblossom · Onagraceae 3 counties
• 
  Oenothera villosa Thunb. Native OEVI

  hairy evening primrose · Onagraceae 42 counties
• 
  Oenothera villosa Thunb. ssp. strigosa (Rydb.) W. Dietr. & P.H. Raven Native OEVIS

  hairy evening primrose · Onagraceae 6 counties
• 
  Oenothera villosa Thunb. ssp. villosa Native OEVIV

  hairy evening primrose · Onagraceae 40 counties
• 
  Oligoneuron album (Nutt.) G.L. Nesom Native OLAL2

  prairie goldenrod · Asteraceae 32 counties
• 
  Oligoneuron ohioense (Frank ex Riddell) G.N. Jones Native OLOH

  Ohio goldenrod · Asteraceae 9 counties
• 
  Oligoneuron riddellii (Frank ex Riddell) Rydb. Native OLRI2

  Riddell's goldenrod · Asteraceae 18 counties
• 
  Oligoneuron rigidum (L.) Small Native OLRI

  stiff goldenrod · Asteraceae 45 counties
• 
  Oligoneuron rigidum (L.) Small var. humile (Porter) G.L. Nesom Native OLRIH

  stiff goldenrod · Asteraceae 1 county
• 
  Oligoneuron rigidum (L.) Small var. rigidum Native OLRIR

  stiff goldenrod · Asteraceae 45 counties
• ⚘
  Oligoneuron ×bernardii (B. Boivin) G.L. Nesom [album × riddellii] Native OLBE

  goldenrod · Asteraceae 3 counties
• 
  Omalotheca sylvatica (L.) Sch. Bip. & F.W. Schultz Native OMSY

  woodland arctic cudweed · Asteraceae 1 county
• 
  Onobrychis viciifolia Scop. Introduced ONVI

  sainfoin · Fabaceae 2 counties
• 
  Onoclea sensibilis L. Native ONSE

  sensitive fern · Dryopteridaceae 71 counties
• 
  Onopordum acanthium L. Introduced ONAC

  Scotch cottonthistle · Asteraceae 2 counties
• 
  Onosmodium bejariense DC. ex A. DC. Native ONBE

  soft-hair marbleseed · Boraginaceae 19 counties
• 
  Onosmodium bejariense DC. ex A. DC. var. bejariense Native ONBEB

  soft-hair marbleseed · Boraginaceae 1 county