Aristolochia, genus Aristolochia - birthworts; dutchman's pipe

Aristolochia durior, Aristolochia macrophylla, Dutchman's-pipe, pipe vine - hardy deciduous vine having large leaves and flowers with the calyx tube curved like the bowl of a pipe

Aristolochia serpentaria, Virginia serpentaria, Virginia serpentary, Virginia snakeroot - birthwort of the eastern United States woodlands

vine - weak-stemmed plant that derives support from climbing, twining, or creeping along a surface