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Polygonum douglasii

Family: polygonaceae
Common name(s): Douglas's Knotweed

General resources

• Wikipedia. Online encyclopedia entry (if defined).
• Google images. Web search for photographs.
• The Plant List. Taxonomical lookup
• Catalogue of Life. Taxonomical lookup
• Dave's Garden. Search the extensive PlantFiles database.

Links for Polygonum douglasii

• Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation.
• Southwest Colorado Wildflowers - Photos and botanical information about the species/genus. (5 photos)
• Turner Photographics - Profile of wildflower of the US Pacific Northwest, with botanical description, habitat and distribution, and photo gallery.