Unarmed trees or shrubs; leaves compound bipinnate, petiolar and jugal glands more or less conspicuous, stipules setaceous, obsolete or rarely papery. Inflorescence pedunculate globose heads, arranged racemosely. Flowers sessile or pedicellate, bisexual. Calyx gamosepalous, dentate or shortly lobed. Corolla gamopetalous, funnel shaped, petals connate beyond the middle. Stamens generally indefinite, connate at the base or high up into a tube; filaments elongated, white, rose or rarely purple, anthers small, eglandular. Ovary shortly stipitate or sessile; style filiform, stigma capitate or minute. Pod broadly linear, thin, compressed, dehiscent or not; continuous inside the valves and without pulp within. Seeds ovate or orbicular, compressed, funicle filiform.