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Polygonum aviculare
prostrate knotweed Smartweed-Buckwheat Family
Polygonum aviculare Polygonaceae
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common names
  prostrate knotweed
  yard knotweed
  common knotgrass
  birdweed
  pigweed
  lowgrass
accepted scientific name
  Polygonum aviculare L.
rules for finding collection records
  Polygonum arenastrum (1156)
  Polygonum aviculare (8797)
  Polygonum buxiforme (304)
family name
  Polygonaceae
Image Author: ©2009 Barry Breckling
Image License: CC BY-NC-SA
Image Source Image Source
Category: Wildflowers
Flowers: Five petals
Petal colors: color
Flower size is about 0.1 inches
Leaf: Alternate, Simple
Plant Observed 2nd week of April thru 1st week of November

How Likely at this Location (100%)
Name Match (100%)
Plant Showiness (27%)
base map where plant found
mag select

Disturbed
Riparian
Forest
Grassland
Desert
Native Plant Status
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native Not Native
native Not Present

grid lines base