Senna pilifera (Vogel) H. S. Irwin & Barneby

Emelista pilifera (Vogel) Pittier, Journ. Wash. Acad. 19: 176. 1929.
Cassia pilifera Vogel, Syn. Cass. 23. 1837.
? Cassia cubensis HofTmansegg, Pfi. Verz. 1: 209. 1824.
Herbaceous or frutescent at base, often simple, 4-6 dm. high, the stem, petioles and inflorescence long-pilose. Stipules linear-filiform; petiole 1-6 cm. long, pilose; rachis bearing very slender elongated glands between each pair of leaflets; leaflets 2 pairs, approximate, ovate to elliptic or obovate, obtuse or acute, membranous, pubescent or glabrate, 2-7 cm. long; pedimcles 1-flovvcred or 2-flowered; sepals unequal, obtuse, 6-10 mm. long; petals 10-20 mm. long; legume 8-16 mm. long, 2-3 mm. wide, more or less curved, long-pilose.
Type locality: Brazil.
Distribution: Cuba; Durango to Veracruz and Panama. Colombia to Bolivia, Brazil and Argentina.