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ARISTOLOCHIACEAE PIPEVINE FAMILY

Michael R. Mesler & Karen Lu

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.
5–8 genera, ± 500 species: mainly tropics, warm temperate; some cultivated (Aristolochia, Asarum, Saruma). [Neinhaus et al. 2005 Plant Syst Evol 250:7–26] —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.

Key to Aristolochiaceae

ARISTOLOCHIA PIPEVINE, BIRTHWORT
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.
± 400 species: generally tropics, warm temperate. (Greek: best birth, from use as medication in childbirth) [Ohi-Toma et al. 2006 Syst Bot 31:481–492]

Previous taxon: Aristolochiaceae
Next taxon: Aristolochia californica

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Oct 26 2014
Citation for this treatment: [Author of taxon treatment] 2013. Aristolochia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=8823, accessed on Oct 26 2014

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