Chamaecrista nictitans var. mensalis (Greenm.) H. S. Irwin & Barneby

Chamaecrista leptadenia (Grcenman) Cockerell, Muhlenbergia 4:68. 1908.
Cassia leptadenia Greenman, Proc. Am. Acad. 41: 238. 1905. Cassia leptadenia mensalis Greenman, loc. cit. 1905.
Annual; stem slender, erect, 1-5 dm. high, simple or little branched, puberulent. Stipules narrowly lanceolate, long-acuminate, strongly ciliate, 5-7 mm. long; petiolar gland discoid, stalked, 0.2-0.3 mm. broad; leaflets 12-16 pairs, linear-oblong, acutish and mucronate, strongly ciliate, obscurely veined, 8-12 mm. long, 1-2 mm. wide; pedicels puberulent, 3-5 mm. long; sepals lanceolate, acuminate, 4 or 5 mm. long, hirsute; petals unequal, 3-6 mm. long; stamens 5-8; legume linear, puberulent, 3-4 cm. long, 3-4 mm. wide.
Type locality: East of El Paso. Texas.
Distribution: Western Texas to Arizona. Queretaro and Sinaloa .