Sesbania emerus (Aubl.) Urb.

Sesban emerus (Aubl.) Britton & Wilson, Sci. Surv Porto Rico 5: 395. 1924.
Aeschvnomene Emerus Aubl. PI. Guian. 775. Tabl. Nomsl. 1775.
Coronilla occidentalis Willd. Sp. PI. 3: 1147. 1803.
Sesban occidentalis Poir. in Lam. Encyc. 7: 129. 1806.
Sesbania occidentalis Pers. Syn. PI, 2: 316. 1807.
? Sesbania macrocarpa Muhl.; Ell. Bot. S. C. & Ga. 2: 221. 1823.
Emerus Sesban occidentalis Kuntze, Rev. Gen. 181. 1891.
Sesbania Emerus Urban, Repert. Sp. Nov. 16: 149. 1919.
Stem shrubby, at least at the base, 2-5 m. high, glabrous, more or less angled; stipules linear-subulate, caducous; leaves 7-18 cm. long; leaflets 24-50, linear oblong, 1.5-3 cm. long. 3-7 mm. wide, rounded at each end, glabrous or with a few scattered hairs when young; racemes 5-10 cm. long, much shorter than the leaves, 3-6-flowered; bracts and bractlets linear, 5 mm. long, caducous; calyx about 8 mm. long, 7 mm. wide; lobes with a triangular base, acuminate, 2-2.5 mm. long, more or less mottled; corolla yellow, 15-20 mm. long; banner dotted with dark-purple; wings oblong-oblanceolate; blades of the keel-petals with a triangular basal auricle; pod straight, about 2 dm. long, 3.5-4 mm. wide, 30-40-seeded; seeds oblong, 3 mm. long, 2 mm. wide.
Type locality: Not given.
Distribution: Florida; Veracruz; Morelos; Guatemala; Panama; West Indies.