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Aristolochia contorta

Family: aristolochiaceae
Common name(s): Dutchman's Pipe; Birthwort; Bei Ma Dou Ling
Hardiness ratings: USDA zone 4

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 Aristolochia contorta

• Asianflora - Plant photos. (4 photos)
• Denver Botanic Gardens - Description, native range, and cultural requirements. (zone 4)