Trees, shrubs or undershrubs; branches often prickly. Leaf pinnately trifoliolate; stipels glandular; stipules small. Inflorescence axillary or terminal racemes, flowers usually clustered, scarlet, showy. Calyx with an oblique mouth, splitting down to the base or campanulate, bilabiate. Vexillum much longer than the wing and the keel. Stamens mono or diadelphous, vexillary stamen free nearly to the base or connate with others, anthers uniform. Ovary stipitate, many-ovuled, style incurved, stigma small, terminal. Fruit stipitate, torulose, falcate.