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 2,001–2,050 of 3,264.

• 
  Orbexilum stipulatum (Torr. & A. Gray) Rydb. Native ORST

  largestipule leather-root · Fabaceae 1 county
• 
  Ornithogalum umbellatum L. Introduced ORUM

  star of Bethlehem · Liliaceae 29 counties
• 
  Orobanche fasciculata Nutt. Native ORFA

  clustered broomrape · Orobanchaceae 2 counties
• 
  Orobanche ludoviciana Nutt. Native ORLU

  Louisiana broomrape · Orobanchaceae 10 counties
• 
  Orobanche ludoviciana Nutt. ssp. ludoviciana Native ORLUL2

  Louisiana broomrape · Orobanchaceae 10 counties
• 
  Orobanche riparia L.T. Collins Native ORRI

  River Broom-Rape · Orobanchaceae 11 counties
• 
  Orobanche uniflora L. Native ORUN

  oneflowered broomrape · Orobanchaceae 14 counties
• 
  Orthilia secunda (L.) House Native ORSE

  sidebells wintergreen · Pyrolaceae 4 counties
• 
  Oryzopsis asperifolia Michx. Native ORAS

  roughleaf ricegrass · Poaceae 2 counties
• 
  Osmorhiza claytonii (Michx.) C.B. Clarke Native OSCL

  Clayton's sweetroot · Apiaceae 66 counties
• 
  Osmorhiza longistylis (Torr.) DC. Native OSLO

  longstyle sweetroot · Apiaceae 59 counties
• 
  Osmunda cinnamomea L. Native OSCI

  cinnamon fern · Osmundaceae 41 counties
• 
  Osmunda cinnamomea L. var. cinnamomea Native OSCIC

  cinnamon fern · Osmundaceae 41 counties
• 
  Osmunda claytoniana L. Native OSCL2

  interrupted fern · Osmundaceae 27 counties
• 
  Osmunda regalis L. Native OSRE

  royal fern · Osmundaceae 44 counties
• 
  Osmunda regalis L. var. spectabilis (Willd.) A. Gray Native OSRES

  royal fern · Osmundaceae 44 counties
• 
  Ostrya virginiana (Mill.) K. Koch Native OSVI

  hophornbeam · Betulaceae 70 counties
• 
  Oxalis corniculata L. Native OXCO

  creeping woodsorrel · Oxalidaceae 4 counties
• 
  Oxalis dillenii Jacq. Native OXDI2

  slender yellow woodsorrel · Oxalidaceae 12 counties
• 
  Oxalis grandis Small Native OXGR

  great yellow woodsorrel · Oxalidaceae 24 counties
• 
  Oxalis illinoensis Schwegm. Native OXIL

  Illinois woodsorrel · Oxalidaceae 10 counties
• 
  Oxalis stricta L. Native OXST

  common yellow oxalis · Oxalidaceae 86 counties
• 
  Oxalis violacea L. Native OXVI

  violet woodsorrel · Oxalidaceae 49 counties
• 
  Oxydendrum arboreum (L.) DC. Native OXAR

  sourwood · Ericaceae 4 counties
• 
  Oxypolis rigidior (L.) Raf. Native OXRI

  stiff cowbane · Apiaceae 52 counties
• 
  Pachysandra procumbens Michx. Native PAPR7

  Allegheny-spurge · Buxaceae 3 counties
• 
  Packera anonyma (Alph. Wood) W.A. Weber & Á. Löve Native PAAN6

  Small's ragwort · Asteraceae 2 counties
• 
  Packera aurea (L.) Á. Löve & D. Löve Native PAAU3

  golden ragwort · Asteraceae 59 counties
• 
  Packera glabella (Poir.) C. Jeffrey Native PAGL17

  butterweed · Asteraceae 36 counties
• 
  Packera obovata (Muhl. ex Willd.) W.A. Weber & Á. Löve Native PAOB6

  roundleaf ragwort · Asteraceae 63 counties
• 
  Packera paupercula (Michx.) Á. Löve & D. Löve Native PAPA20

  balsam groundsel · Asteraceae 10 counties
• 
  Packera plattensis (Nutt.) W.A. Weber & Á. Löve Native PAPL12

  prairie groundsel · Asteraceae 21 counties
• 
  Panax quinquefolius L. Native PAQU

  American ginseng · Araliaceae 54 counties
• 
  Panax trifolius L. Native PATR2

  dwarf ginseng · Araliaceae 14 counties
• 
  Panicum anceps Michx. Native PAAN

  beaked panicgrass · Poaceae 17 counties
• 
  Panicum capillare L. Native PACA6

  witchgrass · Poaceae 79 counties
• 
  Panicum dichotomiflorum Michx. Native PADI

  fall panicgrass · Poaceae 78 counties
• 
  Panicum dichotomiflorum Michx. var. dichotomiflorum Native PADID

  fall panicgrass · Poaceae 10 counties
• 
  Panicum flexile (Gattinger) Scribn. Native PAFL2

  wiry panicgrass · Poaceae 29 counties
• 
  Panicum gattingeri Nash Native PAGA

  Gattinger's panicgrass · Poaceae 48 counties
• 
  Panicum philadelphicum Bernh. ex Trin. Native PAPH

  Philadelphia panicgrass · Poaceae 30 counties
• 
  Panicum rigidulum Bosc ex Nees Native PARI4

  redtop panicgrass · Poaceae 46 counties
• 
  Panicum rigidulum Bosc ex Nees var. elongatum (Pursh) Lelong Native PARIE2

  redtop panicgrass · Poaceae 11 counties
• 
  Panicum rigidulum Bosc ex Nees var. pubescens (Vasey) Lelong Native PARIP

  redtop panicgrass · Poaceae 2 counties
• 
  Panicum rigidulum Bosc ex Nees var. rigidulum Native PARIR

  redtop panicgrass · Poaceae 39 counties
• 
  Panicum verrucosum Muhl. Native PAVE2

  warty panicgrass · Poaceae 7 counties
• 
  Panicum virgatum L. Native PAVI2

  switchgrass · Poaceae 55 counties
• 
  Panicum virgatum L. var. virgatum Native PAVIV

  switchgrass · Poaceae 55 counties
• 
  Papaver dubium L. Introduced PADU

  blindeyes · Papaveraceae 1 county
• 
  Papaver rhoeas L. Introduced PARH2

  corn poppy · Papaveraceae 1 county