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Vascular Plants of California
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Higher Taxonomy
Family: AristolochiaceaeView DescriptionDichotomous Key

Habit: Perennial herb, woody vine, [shrub], rhizomed, aromatic. Stem: branched, occasionally +- underground. Leaf: simple, basal, cauline, or arising from rhizome, alternate; blade generally cordate, entire. Inflorescence: flower generally 1, axillary or terminal. Flower: bisexual, radial or bilateral; sepals 3, free or fused; petals generally 0; stamens generally 6 or 12, free or fused to style; pistil generally 1, ovary +- or partly inferior, chambers generally 6. Fruit: generally capsule. Seed: many.
Genera In Family: 5--8 genera, +- 500 species: mainly tropics, warm temperate; some cultivated (Aristolochia, Asarum, Saruma).
eFlora Treatment Author: Michael R. Mesler & Karen Lu
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Stem: generally climbing. Leaf: cauline. Inflorescence: flower axillary. Flower: [often foul smelling] sepals fused into a generally curved tube, deciduous, lobes 1--3; stamens 6, fused to style. Seed: flat.
Species In Genus: +- 400 species: generally tropics, warm temperate. Etymology: (Greek: best birth, from use as medication in childbirth)
Jepson eFlora Author: Michael R. Mesler & Karen Lu
Reference: Ohi-Toma et al. 2006 Syst Bot 31:481--492
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Citation for this treatment: Michael R. Mesler & Karen Lu 2012, Aristolochia, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on February 22, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora,, accessed on February 22, 2019.