- birthwort, Aristolochia clematitis - creeping plant having curving flowers thought to resemble fetuses; native to Europe; naturalized Great Britain and eastern North America
--1 is a kind of vine
--1 is a member of Aristolochia, genus Aristolochia
--1 has particulars:Dutchman's-pipe, pipe vine, Aristolochia macrophylla, Aristolochia durior; Virginia snakeroot, Virginia serpentaria, Virginia serpentary, Aristolochia serpentaria