Herbs, shrubs or trees, not armed. Lvs paripinnate or reduced to phyllodes; petiolar glands often present; stipules various. Infl. axillary, racemose or paniculate; bracts and bracteoles various. Calyx with a very short tube and 5, often unequal, segments imbricate in bud. Corolla usually yellow, rarely white; petals subequal. Stamens free, 10 and all fertile, or some reduced to staminodes, or 5 and fertile; anthers uniform or a few larger, basifixed, opening by the apex. Style curved; stigma terminal. Pod various, compressed or terete, 1-2-valved, or indehiscent.