Senna papillosa (Britton & Rose) H. S. Irwin & Barneby

Chamaefistula papillosa Britton & Rose, sp. nov
Young branches more or less flexuous, at first sparingly pubescent but soon glabrate, terete. Stipules caducous; leaflets glabrate, membranous, oblong-lanceolate to elliptic, acute or acuminate, 5-10 cm. long; rachis bearing a narrow gland between the lower pair of leaflets; inflorescence axillary and terminal, short-racemose or paniculate, puberulent ; bracts small, caducous ; sepals oblong or elliptic, obtuse, 6-9 mm. long, puberulent; petals 10-12 ram. long; ovary pubescent with appressed hairs; iraraature legurae slender, S-15 cm. long, densely papillose, sparingly short-pubescent, sessile.
Oaxaca and Veracruz. Type from near Santo Domingo, Oaxaca, altitude 300 raeters, June 12, 1895, E. W. Nelson 2667.