Characteristics
Polygonum douglasii Greene
Douglas’s knotweed
Rocky summits and rock outcrops in forest openings, woodlands, and graminoid dominated native meadows. Often growing in cracks in non-shaded calcareous bedrock outcrops.
Forb/herb
Annual
Vascular
8
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Native
Threatened-State
UPL, FAC (NWPL)
UPL (NWPL EMP)
FACU (NWPL NCNE)
S1S2 (State Rank)
G5 (Global Rank)
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Classification
Citation
Polygonum douglasii Greene
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Species Distribution Map
This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display its name.
Source
Synonyms
Plant Photos
