"A genus of plants of the natural order Aristolochiaceae. This order, which is dicotyledonous or exogenous, consists of herbaceous plants or shrubs, orten climbing shrubs, and contains upwards of 130 known species, chiefly natives of warm climates, and particularly abundant in the tropical regions of South America." — Chambers' Encyclopedia, 1875

Aristolochia

"A genus of plants of the natural order Aristolochiaceae. This order, which is dicotyledonous or exogenous,…