Iowa

• Adair 19001
  393 taxa Open ↗
• Adams 19003
  200 taxa Open ↗
• Allamakee 19005
  118 taxa Open ↗
• Appanoose 19007
  38 taxa Open ↗
• Audubon 19009
  225 taxa Open ↗
• Benton 19011
  21 taxa Open ↗
• Black Hawk 19013
  33 taxa Open ↗
• Boone 19015
  146 taxa Open ↗
• Bremer 19017
  24 taxa Open ↗
• Buchanan 19019
  16 taxa Open ↗

Showing 1,551–1,600 of 2,225.

• 
  Polygonum convolvulus L. Introduced POCO10

  black bindweed · Polygonaceae 23 counties
• 
  Polygonum convolvulus L. var. convolvulus Introduced POCOC2

  black bindweed · Polygonaceae 23 counties
• 
  Polygonum cuspidatum Siebold & Zucc. Introduced POCU6

  Japanese knotweed · Polygonaceae 1 county
• 
  Polygonum erectum L. Native POER2

  erect knotweed · Polygonaceae 2 counties
• 
  Polygonum hydropiper L. Introduced POHY

  marshpepper knotweed · Polygonaceae 17 counties
• 
  Polygonum hydropiperoides Michx. Native POHY2

  swamp smartweed · Polygonaceae 7 counties
• 
  Polygonum lapathifolium L. Native POLA4

  curlytop knotweed · Polygonaceae 32 counties
• 
  Polygonum orientale L. Introduced POOR2

  kiss me over the garden gate · Polygonaceae 2 counties
• 
  Polygonum pensylvanicum L. Native POPE2

  Pennsylvania smartweed · Polygonaceae 31 counties
• 
  Polygonum persicaria L. Introduced POPE3

  spotted ladysthumb · Polygonaceae 31 counties
• 
  Polygonum punctatum Elliott Native POPU5

  dotted smartweed · Polygonaceae 19 counties
• 
  Polygonum punctatum Elliott var. confertiflorum (Meisn.) Fassett Native POPUC2

  dotted smartweed · Polygonaceae 2 counties
• 
  Polygonum punctatum Elliott var. punctatum Native POPUP4

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

  bushy knotweed · Polygonaceae 15 counties
• 
  Polygonum ramosissimum Michx. var. ramosissimum Native PORAR

  bushy knotweed · Polygonaceae 13 counties
• 
  Polygonum sagittatum L. Native POSA5

  arrowleaf tearthumb · Polygonaceae 2 counties
• 
  Polygonum scandens L. Both POSC3

  climbing false buckwheat · Polygonaceae 16 counties
• 
  Polygonum scandens L. var. cristatum (Engelm. & A. Gray) Gleason Native POSCC

  climbing false buckwheat · Polygonaceae 1 county
• 
  Polygonum scandens L. var. scandens Native POSCS

  climbing false buckwheat · Polygonaceae 3 counties
• 
  Polygonum tenue Michx. Native POTE2

  pleatleaf knotweed · Polygonaceae 6 counties
• 
  Polygonum virginianum L. Native POVI2

  jumpseed · Polygonaceae 13 counties
• 
  Polymnia canadensis L. Native POCA11

  whiteflower leafcup · Asteraceae 3 counties
• 
  Polypodium virginianum L. Native POVI7

  rock polypody · Polypodiaceae 3 counties
• 
  Polypogon monspeliensis (L.) Desf. Introduced POMO5

  annual rabbitsfoot grass · Poaceae 1 county
• 
  Polystichum acrostichoides (Michx.) Schott Native POAC4

  Christmas fern · Dryopteridaceae 15 counties
• 
  Polystichum acrostichoides (Michx.) Schott var. acrostichoides Native POACA

  Christmas fern · Dryopteridaceae 15 counties
• 
  Polytaenia nuttallii DC. Native PONU4

  Nuttall's prairie parsley · Apiaceae 16 counties
• 
  Pontederia cordata L. Native POCO14

  pickerelweed · Pontederiaceae 1 county
• 
  Populus alba L. Introduced POAL7

  white poplar · Salicaceae 8 counties
• 
  Populus balsamifera L. Native POBA2

  balsam poplar · Salicaceae 2 counties
• 
  Populus balsamifera L. ssp. balsamifera Native POBAB2

  balsam poplar · Salicaceae 2 counties
• 
  Populus deltoides W. Bartram ex Marshall Native PODE3

  eastern cottonwood · Salicaceae 17 counties
• 
  Populus deltoides W. Bartram ex Marshall ssp. deltoides Native PODED

  eastern cottonwood · Salicaceae 9 counties
• 
  Populus deltoides W. Bartram ex Marshall ssp. monilifera (Aiton) Eckenwalder Native PODEM

  plains cottonwood · Salicaceae 7 counties
• 
  Populus grandidentata Michx. Native POGR4

  bigtooth aspen · Salicaceae 2 counties
• 
  Populus tremuloides Michx. Native POTR5

  quaking aspen · Salicaceae 11 counties
• 
  Portulaca oleracea L. Both POOL

  little hogweed · Portulacaceae 11 counties
• 
  Potamogeton amplifolius Tuck. Native POAM5

  largeleaf pondweed · Potamogetonaceae 1 county
• 
  Potamogeton crispus L. Introduced POCR3

  curly pondweed · Potamogetonaceae 4 counties
• 
  Potamogeton diversifolius Raf. Native PODI

  waterthread pondweed · Potamogetonaceae 1 county
• 
  Potamogeton epihydrus Raf. Native POEP2

  ribbonleaf pondweed · Potamogetonaceae 1 county
• 
  Potamogeton foliosus Raf. Native POFO3

  leafy pondweed · Potamogetonaceae 17 counties
• 
  Potamogeton foliosus Raf. ssp. foliosus Native POFOF4

  leafy pondweed · Potamogetonaceae 17 counties
• 
  Potamogeton friesii Rupr. Native POFR3

  Fries' pondweed · Potamogetonaceae 3 counties
• 
  Potamogeton gramineus L. Native POGR8

  variableleaf pondweed · Potamogetonaceae 2 counties
• 
  Potamogeton illinoensis Morong Native POIL

  Illinois pondweed · Potamogetonaceae 6 counties
• 
  Potamogeton natans L. Native PONA4

  floating pondweed · Potamogetonaceae 1 county
• 
  Potamogeton nodosus Poir. Native PONO2

  longleaf pondweed · Potamogetonaceae 15 counties
• 
  Potamogeton pusillus L. Native POPU7

  small pondweed · Potamogetonaceae 7 counties
• 
  Potamogeton pusillus L. ssp. pusillus Native POPUP5

  small pondweed · Potamogetonaceae 3 counties