Descripcion

Subshrubs 0.8–1 m tall; branches pubescent to glandular-pubescent, covered with many short slender to stout short prickles throughout. Stipular prickles straight, 2–2.5 × 1 mm. Leaves 3- to 5-foliolate; petioles densely pubescent, armed with slender prickles, 6–15 cm; leaflets elliptic to widely elliptic, 5–10.5 × 2–5 cm, basally cuneate to attenuate, apically acute to acuminate, sessile, margin entire, ciliate, surface slightly pubescent to glabrescent adaxially, midrib and secondary veins puberulent, with prickles. Inflorescence of corymbiform racemes, terminal, 15–20 cm; floral bracts petiolate, petioles densely pubescent, with a pair of prickles at base, 8–10 mm, blade ovate, 10–35 × 7–15 mm, basally obtuse, apically acute, margin ciliate, puberulent on both sides. Flowers with pedicels 45–55 mm, densely pubescent; sepals linear-triangular, 9–10 × 1 mm, long-acuminate, margin ciliate, pubescent abaxially; petals oblong to oblanceolate, 15–23 × 3–8 mm, basally contracted into a claw, claw 5–7 mm, apically obtuse, purple, slightly puberulent-glandular abaxially; nectary conic, inconspicuous fleshy, obsolete in fruit; filaments 25–40 mm, purple; anthers 6–7 mm; ovary cylindric, 5–7 mm, densely puberulent-glandular; style absent; stigma discoid, sessile. Fruits on a gynophore 35–60 mm, cylindric, 5–7.2 cm × 5–8 mm, densely puberulent. Seeds suborbicular, 2.5–3 × 1 mm, finely longitudinally striate, not transversely ridged, glabrous, cleft covered by an opaque membrane.