Corolla large, widely campanulate; limb bilabiate and 5-lobed; corolla tube cylindrical at the base, widening and uncurving upwards.
Stamens 4, didynamous, adnate to the top of the cylindrical part of the corolla tube; staminode 1, rather large.
Ovary terete, unilocular, placenta parietal 2, widely intruded; ovules numerous, pluriseriate.
Fruit large, cylindrical, pendulous, wood-walled, indehiscent, with a fibrous pulp.
Inflorescence a terminal, lax, pendulous panicle, longly pedunculate.
Calyx campanulate to almost tubular, irregularly lobed, coriaceous.
Seeds numerous, thick; wingless, testa coriaceous.
Medium or large tree with a rounded crown.
Leaves imparipinnate, opposite or ternate.
Disk annular, thick.