Indiana

• Adams 18001
  378 taxa Open ↗
• Allen 18003
  878 taxa Open ↗
• Bartholomew 18005
  495 taxa Open ↗
• Benton 18007
  315 taxa Open ↗
• Blackford 18009
  515 taxa Open ↗
• Boone 18011
  845 taxa Open ↗
• Brown 18013
  734 taxa Open ↗
• Carroll 18015
  836 taxa Open ↗
• Cass 18017
  1,098 taxa Open ↗
• Clark 18019
  1,455 taxa Open ↗

Showing 1,951–2,000 of 3,264.

• 
  Nicandra physalodes (L.) Scop. Introduced NIPH

  apple of Peru · Solanaceae 17 counties
• 
  Nothoscordum bivalve (L.) Britton Native NOBI2

  crowpoison · Liliaceae 13 counties
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  Nuphar lutea (L.) Sm. Native NULU

  yellow pond-lily · Nymphaeaceae 46 counties
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  Nuphar lutea (L.) Sm. ssp. advena (Aiton) Kartesz & Gandhi Native NULUA

  yellow pond-lily · Nymphaeaceae 44 counties
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  Nuphar lutea (L.) Sm. ssp. variegata (Durand) E.O. Beal Native NULUV

  varigated yellow pond-lily · Nymphaeaceae 6 counties
• 
  Nuttallanthus canadensis (L.) D.A. Sutton Native NUCA

  Canada toadflax · Scrophulariaceae 13 counties
• ⚘
  Nymphaea odorata Aiton Native NYOD

  American white waterlily · Nymphaeaceae 21 counties
• ⚘
  Nymphaea odorata Aiton ssp. odorata Native NYODO

  American white waterlily · Nymphaeaceae 2 counties
• ⚘
  Nymphaea odorata Aiton ssp. tuberosa (Paine) Wiersma & Hellquist Native NYODT

  American white waterlily · Nymphaeaceae 19 counties
• 
  Nymphoides peltata (S.G. Gmel.) Kuntze Introduced NYPE

  yellow floatingheart · Menyanthaceae 1 county
• 
  Nyssa biflora Walter Native NYBI

  swamp tupelo · Cornaceae 1 county
• 
  Nyssa sylvatica Marshall Native NYSY

  blackgum · Cornaceae 69 counties
• 
  Obolaria virginica L. Native OBVI

  Virginia pennywort · Gentianaceae 19 counties
• 
  Oenothera biennis L. Native OEBI

  common evening primrose · Onagraceae 65 counties
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  Oenothera clelandii W. Dietr., P.H. Raven & W.L. Wagner Native OECL3

  Cleland's evening primrose · Onagraceae 12 counties
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  Oenothera curtiflora W.L. Wagner & Hoch Native OECU2

  velvetweed · Onagraceae 7 counties
• 
  Oenothera filiformis (Small) W.L. Wagner & Hoch Native OEFI2

  longflower beeblossom · Onagraceae 1 county
• 
  Oenothera filipes (Spach) W.L. Wagner & Hoch Native OEFI3

  slenderstalk beeblossom · Onagraceae 5 counties
• 
  Oenothera fruticosa L. Native OEFR

  narrowleaf evening primrose · Onagraceae 16 counties
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  Oenothera fruticosa L. ssp. fruticosa Native OEFRF

  narrowleaf evening primrose · Onagraceae 15 counties
• 
  Oenothera fruticosa L. ssp. tetragona (Roth) W.L. Wagner Native OEFRT

  narrowleaf evening primrose · Onagraceae 1 county
• 
  Oenothera gaura W.L. Wagner & Hoch Native OEGA

  biennial beeblossom · Onagraceae 47 counties
• 
  Oenothera laciniata Hill Native OELA

  cutleaf evening primrose · Onagraceae 38 counties
• 
  Oenothera nutans Atk. & Bartlett Native OENU2

  nodding evening primrose · Onagraceae 7 counties
• 
  Oenothera perennis L. Native OEPE

  little evening primrose · Onagraceae 13 counties
• 
  Oenothera pilosella Raf. Native OEPI2

  meadow evening primrose · Onagraceae 31 counties
• 
  Oenothera pilosella Raf. ssp. pilosella Native OEPIP

  meadow evening primrose · Onagraceae 30 counties
• 
  Oenothera speciosa Nutt. Native OESP2

  pinkladies · Onagraceae 12 counties
• 
  Oenothera suffrutescens (Ser.) W.L. Wagner & Hoch Native OESU3

  scarlet beeblossom · Onagraceae 2 counties
• 
  Oenothera triloba Nutt. Native OETR2

  stemless evening primrose · Onagraceae 2 counties
• 
  Oenothera villosa Thunb. Native OEVI

  hairy evening primrose · Onagraceae 12 counties
• 
  Oenothera villosa Thunb. ssp. strigosa (Rydb.) W. Dietr. & P.H. Raven Native OEVIS

  hairy evening primrose · Onagraceae 1 county
• 
  Oenothera villosa Thunb. ssp. villosa Native OEVIV

  hairy evening primrose · Onagraceae 12 counties
• 
  Oligoneuron album (Nutt.) G.L. Nesom Native OLAL2

  prairie goldenrod · Asteraceae 2 counties
• 
  Oligoneuron ohioense (Frank ex Riddell) G.N. Jones Native OLOH

  Ohio goldenrod · Asteraceae 22 counties
• 
  Oligoneuron riddellii (Frank ex Riddell) Rydb. Native OLRI2

  Riddell's goldenrod · Asteraceae 36 counties
• 
  Oligoneuron rigidum (L.) Small Native OLRI

  stiff goldenrod · Asteraceae 36 counties
• 
  Oligoneuron rigidum (L.) Small var. glabratum (E.L. Braun) G.L. Nesom Native OLRIG

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

  stiff goldenrod · Asteraceae 35 counties
• 
  Onoclea sensibilis L. Native ONSE

  sensitive fern · Dryopteridaceae 76 counties
• 
  Onopordum acanthium L. Introduced ONAC

  Scotch cottonthistle · Asteraceae 4 counties
• 
  Onosmodium bejariense DC. ex A. DC. Native ONBE

  soft-hair marbleseed · Boraginaceae 8 counties
• 
  Onosmodium bejariense DC. ex A. DC. var. hispidissimum (Mack.) B.L. Turner Native ONBEH

  softhair marbleseed · Boraginaceae 8 counties
• 
  Ophioglossum engelmannii Prantl Native OPEN

  limestone adderstongue · Ophioglossaceae 6 counties
• 
  Ophioglossum pusillum Raf. Native OPPU3

  northern adderstongue · Ophioglossaceae 5 counties
• 
  Ophioglossum vulgatum L. Native OPVU

  southern adderstongue · Ophioglossaceae 31 counties
• 
  Opuntia humifusa (Raf.) Raf. Native OPHU

  devil's-tongue · Cactaceae 21 counties
• 
  Orbexilum onobrychis (Nutt.) Rydb. Native ORON

  French-grass · Fabaceae 31 counties
• 
  Orbexilum pedunculatum (Mill.) Rydb. Native ORPE

  Sampson's snakeroot · Fabaceae 21 counties
• 
  Orbexilum pedunculatum (Mill.) Rydb. var. pedunculatum Native ORPEP2

  Sampson's snakeroot · Fabaceae 21 counties