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	©Copyright 1993 by the Regents of the University of California Print edition is available from the University of California Press

	The second edition of The Jepson Manual (2012) is available from the University of California Press
	See also the Jepson eFlora, which parallels the Second Edition

ARISTOLOCHIACEAE

PIPEVINE FAMILY

Michael R. Mesler and Karen Lu

Perennial from rhizome, woody vine, shrub, aromatic
Stem branched, sometimes nearly all underground
Leaves simple, basal, cauline, or arising singly from rhizome, alternate; blade generally cordate, entire
Inflorescence: flower generally solitary, 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 generally inferior or partly so, chambers generally 6
Fruit: generally capsule
Seeds many
Genera in family: 10 genera, 600 species: mainly tropical, warm temp; some cultivated (Aristolochia , Asarum )
Reference: [Gregory 1956 Amer J Bot 43:110–122]