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!!Aristolochiaceae Juss.

Published In: Genera Plantarum 72–73. 1789. (4 Aug 1789) (Gen. Pl.)

Project Name Data (Last Modified On 7/9/2009)

Acceptance : Accepted

Project Data (Last Modified On 8/3/2009)

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ARISTOLOCHIACEAE (Birthwort Family)

Plants perennial herbs or lianas (shrubs elsewhere). Leaves alternate, simple, with petioles. Flowers perfect, epigynous. Calyx usually petal-like (not green), often united into a straight or contorted tube toward the base, expanded into 3 shallow or deep lobes at the tip. Corolla absent (reduced to small scales elsewhere). Stamens (5)6 or 12. Pistils 1 per flower. Ovary inferior, 3–6-locular, the ovules numerous. Style 1, the stigmas 3–6. Fruits capsules with numerous seeds. Five genera, about 600 species, nearly worldwide but most diverse in tropical and subtropical regions.

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1	1. Plants with well-developed herbaceous or woody aerial stems; flowers zygomorphic, the calyx tube well developed, hooked or S-shaped ... 1. ARISTOLOCHIA	Aristolochia

2	1. Plants without evident aerial stems, the leaves and flowers arising from widely creeping rhizomes; flowers actinomorphic, the calyx tube absent or very short and straight (note that the overlapping bases of the lobes often appear like a short, straight tube) ... 2. ASARUM	Asarum

Lower Taxa

Aristolochia L.
Asarum L.

Cite this page: Tropicos.org. Missouri Botanical Garden. 19 Jun 2013 <http://www.tropicos.org/Name/42000021>