Stamens 10, 9 connate in a dorsally slit sheath, the upper one free; anthers dorsifixed, with a subcircular connective.
Standard suborbicular, dorsally keeled towards the base; wings oblong; keel petals shorter than the wings.
Inflorescence a contracted racemose panicle, with flowers in clusters along the axes (pseudoracemes).
Leaves imparipinnate; leaflets opposite, subopposite or occasionally alternate, without stipels.
Calyx campanulate, 5-dentate, upper teeth broader than the others.
Trees or (not in the Flora area) lianes.
Seed compressed; radicle inflexed.
Ovary few-ovulate, sessile.
Pod 1-seeded.