Washington

• Adams 53001
  571 taxa Open ↗
• Asotin 53003
  959 taxa Open ↗
• Benton 53005
  796 taxa Open ↗
• Chelan 53007
  1,875 taxa Open ↗
• Clallam 53009
  1,390 taxa Open ↗
• Clark 53011
  658 taxa Open ↗
• Columbia 53013
  1,183 taxa Open ↗
• Cowlitz 53015
  798 taxa Open ↗
• Douglas 53017
  679 taxa Open ↗
• Ferry 53019
  994 taxa Open ↗

Showing 3,251–3,300 of 4,423.

• 
  Polygonum punctatum Elliott Native POPU5

  dotted smartweed · Polygonaceae 8 counties
• 
  Polygonum punctatum Elliott var. confertiflorum (Meisn.) Fassett Native POPUC2

  dotted smartweed · Polygonaceae 2 counties
• 
  Polygonum ramosissimum Michx. Native PORA3

  bushy knotweed · Polygonaceae 5 counties
• 
  Polygonum ramosissimum Michx. var. ramosissimum Native PORAR

  bushy knotweed · Polygonaceae 1 county
• 
  Polygonum sachalinense F. Schmidt ex Maxim. Introduced POSA4

  giant knotweed · Polygonaceae 21 counties
• 
  Polygonum setaceum Baldw. Native POSE6

  bog smartweed · Polygonaceae 1 county
• 
  Polygonum viviparum L. Native POVI3

  alpine bistort · Polygonaceae 3 counties
• 
  Polypodium amorphum Suksd. Native POAM7

  irregular polypody · Polypodiaceae 15 counties
• 
  Polypodium glycyrrhiza D.C. Eaton Native POGL8

  licorice fern · Polypodiaceae 22 counties
• 
  Polypodium hesperium Maxon Native POHE3

  western polypody · Polypodiaceae 16 counties
• 
  Polypodium scouleri Hook. & Grev. Native POSC4

  leathery polypody · Polypodiaceae 4 counties
• 
  Polypogon australis Brongn. Introduced POAU3

  Chilean rabbitsfoot grass · Poaceae 1 county
• 
  Polypogon interruptus Kunth Native POIN7

  ditch rabbitsfoot grass · Poaceae 3 counties
• 
  Polypogon monspeliensis (L.) Desf. Introduced POMO5

  annual rabbitsfoot grass · Poaceae 30 counties
• 
  Polypogon viridis (Gouan) Breistr. Introduced POVI9

  beardless rabbitsfoot grass · Poaceae 2 counties
• 
  Polystichum andersonii Hopkins Native POAN2

  Anderson's hollyfern · Dryopteridaceae 5 counties
• 
  Polystichum californicum (D.C. Eaton) Diels Native POCA25

  California swordfern · Dryopteridaceae 2 counties
• 
  Polystichum imbricans (D.C. Eaton) D.H. Wagner Native POIM

  narrowleaf swordfern · Dryopteridaceae 13 counties
• 
  Polystichum imbricans (D.C. Eaton) D.H. Wagner ssp. imbricans Native POIMI

  narrowleaf swordfern · Dryopteridaceae 13 counties
• 
  Polystichum kruckebergii W.H. Wagner Native POKR

  Kruckeberg's hollyfern · Dryopteridaceae 7 counties
• 
  Polystichum lemmonii Underw. Native POLE5

  Lemmon's hollyfern · Dryopteridaceae 4 counties
• 
  Polystichum lonchitis (L.) Roth Native POLO4

  northern hollyfern · Dryopteridaceae 17 counties
• 
  Polystichum munitum (Kaulf.) C. Presl Native POMU

  western swordfern · Dryopteridaceae 28 counties
• 
  Polystichum scopulinum (D.C. Eaton) Maxon Native POSC5

  mountain hollyfern · Dryopteridaceae 5 counties
• 
  Populus alba L. Introduced POAL7

  white poplar · Salicaceae 6 counties
• 
  Populus balsamifera L. Native POBA2

  balsam poplar · Salicaceae 30 counties
• 
  Populus balsamifera L. ssp. trichocarpa (Torr. & A. Gray ex Hook.) Brayshaw Native POBAT

  black cottonwood · Salicaceae 30 counties
• 
  Populus nigra L. Introduced PONI

  Lombardy poplar · Salicaceae 2 counties
• 
  Populus tremuloides Michx. Native POTR5

  quaking aspen · Salicaceae 27 counties
• 
  Portulaca oleracea L. Both POOL

  little hogweed · Portulacaceae 24 counties
• 
  Potamogeton alpinus Balbis Native POAL8

  alpine pondweed · Potamogetonaceae 6 counties
• 
  Potamogeton amplifolius Tuck. Native POAM5

  largeleaf pondweed · Potamogetonaceae 17 counties
• 
  Potamogeton crispus L. Introduced POCR3

  curly pondweed · Potamogetonaceae 9 counties
• 
  Potamogeton epihydrus Raf. Native POEP2

  ribbonleaf pondweed · Potamogetonaceae 15 counties
• 
  Potamogeton foliosus Raf. Native POFO3

  leafy pondweed · Potamogetonaceae 13 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 11 counties
• 
  Potamogeton friesii Rupr. Native POFR3

  Fries' pondweed · Potamogetonaceae 2 counties
• 
  Potamogeton gramineus L. Native POGR8

  variableleaf pondweed · Potamogetonaceae 19 counties
• 
  Potamogeton illinoensis Morong Native POIL

  Illinois pondweed · Potamogetonaceae 10 counties
• 
  Potamogeton natans L. Native PONA4

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

  longleaf pondweed · Potamogetonaceae 7 counties
• 
  Potamogeton obtusifolius Mert. & W.D.J. Koch Native POOB2

  bluntleaf pondweed · Potamogetonaceae 5 counties
• 
  Potamogeton praelongus Wulfen Native POPR5

  whitestem pondweed · Potamogetonaceae 12 counties
• 
  Potamogeton pusillus L. Native POPU7

  small pondweed · Potamogetonaceae 24 counties
• 
  Potamogeton pusillus L. ssp. pusillus Native POPUP5

  small pondweed · Potamogetonaceae 5 counties
• 
  Potamogeton pusillus L. ssp. tenuissimus (Mert. & W.D.J. Koch) Haynes & C.B. Hellquist Native POPUT3

  small pondweed · Potamogetonaceae 21 counties
• 
  Potamogeton richardsonii (Benn.) Rydb. Native PORI2

  Richardson's pondweed · Potamogetonaceae 19 counties
• 
  Potamogeton robbinsii Oakes Native PORO2

  Robbins' pondweed · Potamogetonaceae 16 counties
• 
  Potamogeton zosteriformis Fernald Native POZO

  flatstem pondweed · Potamogetonaceae 12 counties