Sesbania

Annual or short-lived perennial herbs, shrubs, or small trees; stems erect, often rooting at nodes, glabrous or sparsely hairy. Leaves alternate, paripinnate, terminating in a bristle; leaflets numerous, usually oblong; stipules usually caducous; stipellae minute or absent. Inflorescence an axillary raceme; bracts and bracteoles caducous. Calyx campanulate, shortly 5-lobed or -toothed, glabrous, sometimes hairy on the inner surface of lobes; petals white, yellow, mauve, or bluish, long-clawed; standard ± orbicular, often with various appendages at base of limb; keel united at apex; stamens diadelphous, anthers uniform or alternate ones longer; ovary sessile or stipitate, glabrous; ovules numerous. Pod linear, usually terete, ± coriaceous, septate, dehiscent; seeds arillate.