Descripcion

Herbs to shrubs 1 m tall; branches glandular-pubescent, pubescent to glabrescent. Stipular prickles slightly curved at apex, 2–3 × 1.5 mm. Leaves 3- to 7-foliolate; petioles pubescent to glabrescent, armed with slender to stout straight short prickles, 6–8.5 cm; leaflets elliptic to widely elliptic, elliptic-lanceolate, 3.3–6.2 × 1–2 cm, basally attenuate to cuneate, apically acuminate to long-acuminate, petiolules pubescent, armed, 2–3 mm, margin sinuose-ciliate to serrulate-ciliate, surfaces glabrous or rarely with scattered, short, pointed, eglandular hairs on both sides, midrib and secondary veins glabrous, with prickles. Inflorescence of corymbiform racemes, terminal, = 30 cm; floral bracts petiolate, petioles puberulent, 3–5 mm, blade ovate to elliptic, 11–16 × 5–10 mm, basally cuneate to rounded, apically acute, margin serrulate-ciliate, puberulent on both sides. Flowers with pedicels 17–19 mm, glabrescent; sepals linear-triangular to lanceolate, 2.5–3 × 1 mm, acute, margin ciliate, glabrescent abaxially; petals obovate, 5–6 × 2.5–3 mm, basally contracted into a claw, claw 3–4 mm, apically obtuse, white, glabrous; nectary conic, conspicuous fleshy, persistent in fruit; filaments 20–23 mm, purple; anthers 2.5–3 mm; ovary cylindric, 4–5 mm, glabrous; style 1–2 mm, persistent in fruit; stigma pronouncedly capitate. Fruits on a gynophore 21–25 mm, cylindric, slightly torulose, 6–9 cm × 3–5 mm, pubescent to glabrous. Seeds suborbicular, 2–2.5 × 1–1.5 mm, seeming smooth, longitudinally striate, and finely transversely ridged, cleft covered by a thin and opaque membrane.