Williams County

Showing 401–450 of 692.

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  Oligoneuron album (Nutt.) G.L. Nesom Native OLAL2

  prairie goldenrod · Asteraceae
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  Oligoneuron riddellii (Frank ex Riddell) Rydb. Native OLRI2

  Riddell's goldenrod · Asteraceae
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  Onoclea sensibilis L. Native ONSE

  sensitive fern · Dryopteridaceae
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  Osmorhiza longistylis (Torr.) DC. Native OSLO

  longstyle sweetroot · Apiaceae
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  Osmunda cinnamomea L. Native OSCI

  cinnamon fern · Osmundaceae
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  Osmunda cinnamomea L. var. cinnamomea Native OSCIC

  cinnamon fern · Osmundaceae
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  Osmunda regalis L. Native OSRE

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

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

  hophornbeam · Betulaceae
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  Oxalis stricta L. Native OXST

  common yellow oxalis · Oxalidaceae
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  Packera obovata (Muhl. ex Willd.) W.A. Weber & Á. Löve Native PAOB6

  roundleaf ragwort · Asteraceae
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  Packera plattensis (Nutt.) W.A. Weber & Á. Löve Native PAPL12

  prairie groundsel · Asteraceae
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  Panax trifolius L. Native PATR2

  dwarf ginseng · Araliaceae
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  Panicum capillare L. Native PACA6

  witchgrass · Poaceae
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  Parnassia glauca Raf. Native PAGL3

  fen grass of Parnassus · Saxifragaceae
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  Parthenocissus quinquefolia (L.) Planch. Native PAQU2

  Virginia creeper · Vitaceae
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  Pastinaca sativa L. Introduced PASA2

  wild parsnip · Apiaceae
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  Pedicularis canadensis L. Native PECA

  Canadian lousewort · Scrophulariaceae
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  Pedicularis canadensis L. ssp. canadensis Native PECAC3

  Canadian lousewort · Scrophulariaceae
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  Pedicularis lanceolata Michx. Native PELA2

  swamp lousewort · Scrophulariaceae
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  Peltandra virginica (L.) Schott Native PEVI

  green arrow arum · Araceae
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  Penstemon hirsutus (L.) Willd. Native PEHI

  hairy beardtongue · Scrophulariaceae
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  Penthorum sedoides L. Native PESE6

  ditch stonecrop · Crassulaceae
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  Phlox divaricata L. Native PHDI5

  wild blue phlox · Polemoniaceae
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  Phlox divaricata L. ssp. divaricata Native PHDID3

  wild blue phlox · Polemoniaceae
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  Phlox latifolia Michx. Native PHLA13

  wideflower phlox · Polemoniaceae
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  Phryma leptostachya L. Native PHLE5

  American lopseed · Verbenaceae
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  Phyla lanceolata (Michx.) Greene Native PHLA3

  lanceleaf fogfruit · Verbenaceae
• 
  Physalis heterophylla Nees Native PHHE5

  clammy groundcherry · Solanaceae
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  Physalis heterophylla Nees var. heterophylla Native PHHEH3

  clammy groundcherry · Solanaceae
• 
  Physalis longifolia Nutt. Native PHLO4

  longleaf groundcherry · Solanaceae
• 
  Physostegia virginiana (L.) Benth. Native PHVI8

  obedient plant · Lamiaceae
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  Phytolacca americana L. Native PHAM4

  American pokeweed · Phytolaccaceae
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  Phytolacca americana L. var. americana Native PHAMA3

  American pokeweed · Phytolaccaceae
• 
  Plantago lanceolata L. Introduced PLLA

  narrowleaf plantain · Plantaginaceae
• 
  Plantago major L. Introduced PLMA2

  common plantain · Plantaginaceae
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  Plantago patagonica Jacq. Native PLPA2

  woolly plantain · Plantaginaceae
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  Plantago rugelii Decne. Native PLRU

  blackseed plantain · Plantaginaceae
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  Plantago rugelii Decne. var. rugelii Native PLRUR

  blackseed plantain · Plantaginaceae
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  Platanus occidentalis L. Native PLOC

  American sycamore · Platanaceae
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  Podophyllum peltatum L. Native POPE

  mayapple · Berberidaceae
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  Polemonium reptans L. Native PORE2

  Greek valerian · Polemoniaceae
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  Polemonium reptans L. var. reptans Native PORER

  Greek valerian · Polemoniaceae
• 
  Polygonatum biflorum (Walter) Elliott Native POBI2

  smooth Solomon's seal · Liliaceae
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  Polygonatum biflorum (Walter) Elliott var. commutatum (Schult. & Schult. f.) Morong Native POBIC

  smooth Solomon's seal · Liliaceae
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  Polygonatum pubescens (Willd.) Pursh Native POPU4

  hairy Solomon's seal · Liliaceae
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  Polygonum amphibium L. Native POAM8

  water knotweed · Polygonaceae
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  Polygonum amphibium L. var. emersum Michx. Native POAME

  longroot smartweed · Polygonaceae
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  Polygonum aviculare L. Introduced POAV

  prostrate knotweed · Polygonaceae
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  Polygonum convolvulus L. Introduced POCO10

  black bindweed · Polygonaceae