Columbia Persoon.

Trees or shrubs. Leaves long petiolate; leaf blade ovate, usually hairy abaxially, basal veins 5-7, margin entire or serrulate, apex acute, sometimes 3-5-lobed. Inflorescences usually terminal, cymose paniculate. Bracts small; bracteoles present. Flowers bisexual. Sepals 5, free. Petals 5, glandular at base. Stamens many, free or in 5 bundles, borne on short androgynophore. Ovary 3-5-loculed; ovules 2-4 per locule; stigma thin, lobed or entire. Fruit a capsule, subglobose, 3-5-winged, septicidally dehiscent.

About 20 species: tropical Asia; two species in China.