Ricinus L.
Monoecious shrub or large herb; sap watery. Lvs alternate, stipulate, palmately lobed, serrate. ♂ and ♀ fls mixed in terminal panicles, often appearing axillary. ♂ fls: short-pedicellate; perianth herbaceous; segments 3-5, united in bud; filaments much-branched; anthers very numerous. ♀ fls: long-pedicellate; perianth membranous, soon deciduous; ovary 3-celled with a single ovule in each cell; styles 3, usually 2-fid. Fr. a 3-celled capsule; seeds smooth.
1 sp., tropical Africa. Naturalised sp. 1.