in botany; A genus of the trigynia order, belonging to the polyandra class of plants. The calyx is a pentaphyllous perianthium, with small, roundish, and concave leaves; the corolla consists of three roundish hollow petals, longer than the calyx.

The stamina are very many capillary filaments much dilated at the apex; the pericarpium three egg-shaped follicles containing several seeds.