Senna quinquangulata var. quinquangulata

Chamaefistula collinsii Britton & Rose, sp. nov
A shrub, 3-5 m. high, the branches angled, and with dense soft, short, yellowish pubescence. Stipules linear, about I cm. long, caducous; leaflets ovate to broadly lanceolate, acuminate or acute, 5-12 mm. long, membranous, glabrous above, even from the first, or with a few hairs near the base or on the midrib, densely yellowish appressed-pubescent beneath; rachis bearing a gland between both pairs of leaflets; inflorescence axillary, in very short, few-flowered racemes, shorter than llic suhtcndinK petiole; peduncle, bracts, pedicels, and calyx densely yellowish pubescent; bracts ovate, acute; pedicels 3-5 mm. long; sepals oblong, 7 mm. long, rounded. Cerro del Cruz, Tepic, October I, 1923, G. N. Collins & J. H. Kempton 22.

Chamaefistula villosula Britton & Rose, sp. nov
Scandent, the branches slender, straight, densely villous. Stipules narrow, somewhat falcate, 10-12 mm. long; petioles slender, 2-3 cm. long; gland oblong, borne between the lower and sometimes also between the upper pair of leaflets; leaflets elliptic, oblong or ovate, 2-10 cm. long, membranous, or subchartaceous, green and glabrous above, appressed-pubescent Ijeneath; inflorescence of short axillary, few-flowered racemes, the rachis and pedicels villous; bracts 3-5 mm. long, ovate, obtuse, deciduous; pedicels 1-2 cm. long; sepals oblong to obovatc, rounded, 6-8 mm. long, appressed-pubescent; petals 10-15 mm. long, pubescent; immature legume pubescent; mature legume glabrous, 2 dm. long, about 1.5 cm. wide and 5 mm. thick, tipped by a stout beak 8 ram. long.
Sinaloa and Jalisco. Type from San Sebastian, Jalisco, January, February, 1927, Yncs Alexia, 1523, flowers; 167S, fruit.