California Native Plant Link Exchange
PLANT INFORMATION

Polygonum douglasii ssp. majus - Large douglas' knotweed

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Lifeform:
Annual herb
Family:
Polygonaceae
Wetland:
unlikely (FACU)

2003 Michael Charters

2012 Jean Pawek

2009 Barry Breckling

2016 Judy and Barry Breckling

New Names:
Polygonum majus

Parent species:
Polygonum douglasii

Synonyms:
Polygonum coarctatum var. majus
Polygonum majus

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