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Polygonum shastense
Shasta knotweed Smartweed-Buckwheat Family
Polygonum shastense Polygonaceae
common name
  Shasta knotweed
accepted scientific name
  Polygonum shastense W.H. Brewer
rules for finding collection records
  Polygonum shastense (310)
family name
Image Author: ©2010 Keir Morse
Image License: CC BY-NC-SA
Image Source Image Source
Category: Wildflowers
Flowers: Five petals
Petal colors: color color
Flower size is .2 to .4 inches
Leaf: Alternate
Plant Observed 3rd week of June thru 1st week of October

How Likely at this Location (16%)
Name Match (100%)
Plant Showiness (36%)
Links to Plant Photos
Cal Photos (67)
Wikimedia Commons (7)
Sharnoff Photography (4)
Adam Schneider (2)
base map where plant found
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Native Plant Status
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native Native
native Not Present

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