Oregon

• Baker 41001
  1,572 taxa Open ↗
• Benton 41003
  1,855 taxa Open ↗
• Clackamas 41005
  1,485 taxa Open ↗
• Clatsop 41007
  979 taxa Open ↗
• Columbia 41009
  1,183 taxa Open ↗
• Coos 41011
  1,238 taxa Open ↗
• Crook 41013
  1,354 taxa Open ↗
• Curry 41015
  1,738 taxa Open ↗
• Deschutes 41017
  1,482 taxa Open ↗
• Douglas 41019
  2,250 taxa Open ↗

Showing 4,151–4,200 of 5,518.

• 
  Polypodium calirhiza S. Whitmore & A.R. Sm. Native POCA26

  nested polypody · Polypodiaceae 3 counties
• 
  Polypodium glycyrrhiza D.C. Eaton Native POGL8

  licorice fern · Polypodiaceae 19 counties
• 
  Polypodium hesperium Maxon Native POHE3

  western polypody · Polypodiaceae 20 counties
• 
  Polypodium scouleri Hook. & Grev. Native POSC4

  leathery polypody · Polypodiaceae 8 counties
• 
  Polypogon interruptus Kunth Native POIN7

  ditch rabbitsfoot grass · Poaceae 7 counties
• 
  Polypogon monspeliensis (L.) Desf. Introduced POMO5

  annual rabbitsfoot grass · Poaceae 26 counties
• 
  Polypogon viridis (Gouan) Breistr. Introduced POVI9

  beardless rabbitsfoot grass · Poaceae 3 counties
• 
  Polystichum andersonii Hopkins Native POAN2

  Anderson's hollyfern · Dryopteridaceae 7 counties
• 
  Polystichum californicum (D.C. Eaton) Diels Native POCA25

  California swordfern · Dryopteridaceae 5 counties
• 
  Polystichum imbricans (D.C. Eaton) D.H. Wagner Native POIM

  narrowleaf swordfern · Dryopteridaceae 21 counties
• 
  Polystichum imbricans (D.C. Eaton) D.H. Wagner ssp. imbricans Native POIMI

  narrowleaf swordfern · Dryopteridaceae 21 counties
• 
  Polystichum kruckebergii W.H. Wagner Native POKR

  Kruckeberg's hollyfern · Dryopteridaceae 10 counties
• 
  Polystichum lemmonii Underw. Native POLE5

  Lemmon's hollyfern · Dryopteridaceae 3 counties
• 
  Polystichum lonchitis (L.) Roth Native POLO4

  northern hollyfern · Dryopteridaceae 15 counties
• 
  Polystichum munitum (Kaulf.) C. Presl Native POMU

  western swordfern · Dryopteridaceae 26 counties
• 
  Polystichum scopulinum (D.C. Eaton) Maxon Native POSC5

  mountain hollyfern · Dryopteridaceae 14 counties
• 
  Pontederia cordata L. Native POCO14

  pickerelweed · Pontederiaceae 3 counties
• 
  Populus alba L. Introduced POAL7

  white poplar · Salicaceae 10 counties
• 
  Populus angustifolia James Native POAN3

  narrowleaf cottonwood · Salicaceae 2 counties
• 
  Populus balsamifera L. Native POBA2

  balsam poplar · Salicaceae 33 counties
• 
  Populus balsamifera L. ssp. trichocarpa (Torr. & A. Gray ex Hook.) Brayshaw Native POBAT

  black cottonwood · Salicaceae 33 counties
• 
  Populus tremuloides Michx. Native POTR5

  quaking aspen · Salicaceae 29 counties
• 
  Porterella carnosula (Hook. & Arn.) Torr. Native POCA15

  fleshy porterella · Campanulaceae 6 counties
• 
  Portulaca oleracea L. Both POOL

  little hogweed · Portulacaceae 22 counties
• 
  Potamogeton alpinus Balbis Native POAL8

  alpine pondweed · Potamogetonaceae 8 counties
• 
  Potamogeton amplifolius Tuck. Native POAM5

  largeleaf pondweed · Potamogetonaceae 11 counties
• 
  Potamogeton crispus L. Introduced POCR3

  curly pondweed · Potamogetonaceae 12 counties
• 
  Potamogeton diversifolius Raf. Native PODI

  waterthread pondweed · Potamogetonaceae 3 counties
• 
  Potamogeton epihydrus Raf. Native POEP2

  ribbonleaf pondweed · Potamogetonaceae 20 counties
• 
  Potamogeton foliosus Raf. Native POFO3

  leafy pondweed · Potamogetonaceae 18 counties
• 
  Potamogeton foliosus Raf. ssp. fibrillosus (Fernald) Haynes & C.B. Hellquist Native POFOF5

  leafy pondweed · Potamogetonaceae 2 counties
• 
  Potamogeton foliosus Raf. ssp. foliosus Native POFOF4

  leafy pondweed · Potamogetonaceae 16 counties
• 
  Potamogeton gramineus L. Native POGR8

  variableleaf pondweed · Potamogetonaceae 8 counties
• 
  Potamogeton illinoensis Morong Native POIL

  Illinois pondweed · Potamogetonaceae 8 counties
• 
  Potamogeton natans L. Native PONA4

  floating pondweed · Potamogetonaceae 18 counties
• 
  Potamogeton nodosus Poir. Native PONO2

  longleaf pondweed · Potamogetonaceae 8 counties
• 
  Potamogeton praelongus Wulfen Native POPR5

  whitestem pondweed · Potamogetonaceae 3 counties
• 
  Potamogeton pusillus L. Native POPU7

  small pondweed · Potamogetonaceae 17 counties
• 
  Potamogeton pusillus L. ssp. pusillus Native POPUP5

  small pondweed · Potamogetonaceae 14 counties
• 
  Potamogeton pusillus L. ssp. tenuissimus (Mert. & W.D.J. Koch) Haynes & C.B. Hellquist Native POPUT3

  small pondweed · Potamogetonaceae 5 counties
• 
  Potamogeton richardsonii (Benn.) Rydb. Native PORI2

  Richardson's pondweed · Potamogetonaceae 16 counties
• 
  Potamogeton robbinsii Oakes Native PORO2

  Robbins' pondweed · Potamogetonaceae 4 counties
• 
  Potamogeton zosteriformis Fernald Native POZO

  flatstem pondweed · Potamogetonaceae 4 counties
• 
  Potentilla argentea L. Introduced POAR8

  silver cinquefoil · Rosaceae 1 county
• 
  Potentilla argentea L. var. argentea Introduced POARA3

  silver cinquefoil · Rosaceae 1 county
• 
  Potentilla arguta Pursh Native POAR7

  tall cinquefoil · Rosaceae 16 counties
• 
  Potentilla arguta Pursh ssp. convallaria (Rydb.) D.D. Keck Native POARC

  cream cinquefoil · Rosaceae 16 counties
• 
  Potentilla biennis Greene Native POBI7

  biennial cinquefoil · Rosaceae 17 counties
• 
  Potentilla brevifolia Nutt. ex Torr. & A. Gray Native POBR5

  sparseleaf cinquefoil · Rosaceae 5 counties
• 
  Potentilla diversifolia Lehm. Native PODI2

  varileaf cinquefoil · Rosaceae 6 counties