Trees, tall, the trunk often buttressed, the pubescence generally of stellate hairs. Leaves alternate, short-petiolate, stipulate, the stipules small and deciduous, the blade serrate, 3-palminerved. Inflorescences of axillary or terminal, loose cymes. Flowers hermaphrodite, actinomorphous, pedicellate, calyculate, the bractlets 3, valvate, fleshy, caducous; calyx valvate, the sepals 5, free, fleshy; petals 5, free, imbricate, about half the length of the sepals, glandular-thickened within at the base; gonophore short, naked, crowned by a short, membranous urceolus surround-ing the base of the stamens; stamens ca. 25, the filaments free, unequal; anthers 2-thecate, medifixus, longitudinally dehiscent; ovary superior, sessile, 3-or 4-celled, the cells 4-ovulate; style simple, filiform; stigma obscurely parted. Fruit composed of 3(-4) samaras separating at maturity from a central axis, each samara 1-to 4-seeded; seeds pyriform, flattened; albumen copious; embryo straight; cotyledons flat, foliaceous.
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