|California Pipevine (Aristolochia californica)|
The bizarre flowers are large to medium-sized, growing in the leaf axils. They are bilaterally or radially symmetrical.
Some newer classification schemes, such as the Update of the Angiosperm Phylogeny Group, place the family Aristolochiaceae in the order Piperales, but it is still quite common, though superseded, for the Aristolochiaceae to be assigned, sometimes with some other families, their own order (Aristolochiales).
Many members of Aristolochia and some of Asarum contain the toxin aristolochic acid, which discourages herbivores and is known to be carcinogenic in rats. Aristolochia itself is carcinogenic to humans.
Pipevine swallowtail butterflies lay their eggs on pipevine (Aristolochia species), and the larvae dine on the plant but are not affected by the toxin, which then offers the adult butterfly protection against predators.
- "Family: Aristolochiaceae Juss., nom. cons.". Germplasm Resources Information Network. United States Department of Agriculture. 2007-04-12. Retrieved 2011-01-09.
- "GRIN Genera of Aristolochiaceae subfam. Aristolochioideae". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2011-01-09.
- "GRIN Genera of Aristolochiaceae subfam. Asaroideae". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2011-01-09.
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|Wikispecies has information related to: Aristolochiaceae|
- International Agency for Research on Cancer evaluation
- Dietary Supplements: Aristolochic Acid, U.S. Food and Drug Administration alerts
- Health Canada advising not to use products labelled to contain Aristolochia