Deciduous trees or shrubs. Leaves alternate, rarely sub-opposite. eglandular, petiolate, entire. Inflorescence axillary, dense globose heads, peduncles much shorter than the leaves. Flowers small, yellow, bisexual. Hypanthium compressed at the base, prolonged up to ovary, subpersistent, expands at the top into 5 campanulate lobes, deciduous. Petals absent. Stamens 10 in 2 series, anthers small, cordate, filaments filiform, exserted. Disc epipetalous, hairy. Ovary unilocular, inferior, style filiform, ovules 2, pendulous from the top of the ovary. Fruit packed in a dense head, small, compressed, 2 winged; seeds ovoid, cotyledons convolute.