Mimosa polyancistra Benth.

Mimosa polyancistra Benth. Trans. Linn. Soc. 30: 422. 1875
Mimosa hyslricosa Brand. Univ. Calif. Publ. Bot. 4: 86, 1910.
A slender, vine-like shrub, the branches pubescent, with numerous reflexed prickles. Stipules linear; petiole and rachis prickly; pinnae 3-7 pairs, with an acicular bristle between them; leaflets 6-8 pairs, oblong, 6-10 mm. long, 2-3 mm. wide, glabrous or puberulent and dark green above, pale and with scanty appressed pubescence beneath; peduncles axillary, filiform, 1-2 cm. long, pubescent; heads oblong; flowers capitate, purple; calyx and corolla pubescent; stamens twice as many as the corolla-lobes; legume linear, 5-6 cm. long, about 7 mm. wide, acuminate, the margins prickly, the valves densely setose and glandular.
Type locality: Mexico. Distribution: Puebla; Oaxaca; Jalisco.