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Polygonum paronychia
beach knotweed Smartweed-Buckwheat Family
Polygonum paronychia Polygonaceae
common names
  beach knotweed
  dune knotweed
  black knotweed
accepted scientific name
  Polygonum paronychia Cham. & Schltdl.
rules for finding collection records
  Polygonum paronychia (738)
family name
Image Author: ©2007 Steve Matson
Image License: Author's permission
Image Source
Category: Wildflowers
Flowers: Five petals
Petal colors: color color color
Flower size is about 0.2 inches
Leaf: Alternate
Plant Observed All Year

How Likely at this Location (20%)
Name Match (100%)
Plant Showiness (36%)
Links to Plant Photos
Cal Photos (59)
Paul Slichter (13)
Wikimedia Commons (8)
J. Reveal (6)
G.D.Carr (8)
Jay Sullivan (1)
base map where plant found
mag select

Native Plant Status
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native Native
native Not Present

grid lines base