Trees or shrubs, leaf paripinnate or digitate, rachis ending in a spine or bristle, leaflets entire; stipules subulate or spinescent. Inflorescence solitary or pedicelled, a 2-3-flowered umbel. Bract and bracteoles often subulate. Calyx obliquely placed on pedicel, teeth deltoid or elongated. Corolla yellow, or whitish red. Vexillum ovate or suborbicular. Wing obliquely oblong. Keel straight, obtuse. Stamens diadelphous, vexillary stamen free, anthers uniform. Ovary sessile, many-ovuled, style straight or slightly incurved, stigma terminal. Fruit sessile, terete, 2-valved, unilocular, many-seeded.