Flora of the Southeastern United States
2022 Edition


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Aristolochia Linnaeus. Birthwort.

Key to Aristolochia

A genus of about 300 species, herbs and vines, once Endodeca, Isotrema, and Pararistolochia are excluded (Huber in Kubitzki 1993). Recent work has clarified that Aristolochia s.l. comprises 4 main clades, each of which is distinctive molecularly, morphologically, and in karyotype. These can be (as here) recognized as genera, or alternatively as four subgenera, grouped into two genera (Aristolochia including Pararistolochia, and Isotrema including Endodeca), as suggested by Ohi-Toma et al. (2006).

Ref: Barringer (1997) In Flora of North America Editorial Committee (1997); Huber In Kubitzki, Rohwer, & Bittrich (1993); Kelly & González (2003); Ohi-Toma et al. (2006). Show full citations.

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image of plant© M. Whitson, some rights reserved (CC BY), uploaded by M. Whitson source | Original Image ⭷