Shrub or subshrub up to 0.6 m in height, spiny, hermaphrodite, highly branched, with erect stems, sparsely foliose. Stems and old branches with brown bark, fissured longitudinally, glabrous. Young branchlets green, striated-ribbed longitudinally, with 5-8 ribs in an inverted V-shape, puberulous, finishing in a spine. Spines simple or pinnate. Leaves alternate, trifoliolate or unifoliolate \u2014with the lateral leaflets transforming into 2 spiny appendages\u2014, without stipules, subsessile, with leaflets 3-8(10) \u00d7 0.5-1.7(2) mm, lanceolate, attenuated at the base, acute or spinulose at the apex, green, glabrescent on both sides, with spinescent phyllodes at the base. Inflorescence racemiform, terminal, \u00b1 lax, often with the axis prolonged into a spine, and with 5-25 pedicellate flowers, with pedicel up to 2 mm, glabrous. Calyx 3-4.5 mm, glabrous, deeply split into 2 lips, the upper lip bipartite in 2 triangular segments, and the lower lip trifid. Corolla 5.5-7.5 mm, papilionoid, yellow, caducous, with an ovate standard, truncated at the apex, glabrous, subequal to the wings and subequal or smaller than the keel. Androecium monadelphous, with 10 stamens. Ovary puberulous and capitate stigma. Pod 5-6 \u00d7 2.5-3 mm, ovoid-acuminate, compressed, reddish-brown or blackish, puberulous, with 1 seed. Seeds 1.5-2 mm, ovoid, somewhat compressed, smooth, brownish, without an aril.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-12336","species","type-species","status-publish","hentry"],"acf":[],"yoast_head":"\n