Subshrubs to 50 cm tall. Branchlets brownish to reddish brown, slender, pilose, glabrescent, with sparse, sharp prickles, with dense, purplish red stalked glands 2–5 mm. Leaves imparipinnate, 3–7-foliolate; petiole 2–3 cm, petiolule of terminal leaflet 5–10 mm, lateral leaflets subsessile, petiolule and rachis glabrous or sparsely pilose, with purplish red stalked glands and sparse prickles; stipules lanceolate or linear, 6–9 mm, margin with glandular hairs, sparsely pilose; blade of leaflets ovate-oblong or ovate-lanceolate, terminal leaflet 5–6 × 0.8–1.5 cm, lateral leaflets 1.5–3 × 0.6–1 cm, abaxially subglabrous, pilose, with stalked glands and with minute prickles along veins, adaxially sparsely pilose, base rounded to truncate, lateral leaflets oblique basally, margin incised-doubly serrate, apex acute to acuminate. Inflorescences terminal, corymbose, 3–5 cm, 1-flowered, rarely 2–5-flowered; rachis and pedicels subglabrous, with purplish red stalked glands and sparse, small prickles; bracts linear, 5–7 mm, subglabrous, margin with sparse, stalked glands. Pedicel 2–4 cm. Flowers 2–3 cm in diam. Calyx purplish red, subglabrous, with dense stalked glands and bristles abaxially; sepals narrowly triangular or triangular-lanceolate, 1.1–1.5 cm × 4–6 mm, inner sepals with tomentose margin, apex long caudate. Petals ovate, 1–1.4 cm × 7–9 mm, glabrous, base shortly clawed, apex obtuse. Stamens shorter than petals; filaments linear, somewhat broader basally. Pistils numerous, slightly shorter than stamens; style and ovary often glabrous. Aggregate fruit red, subglobose, 0.9–1.1 cm in diam., glabrous. Fl. Apr, fr. May–Jun. 2n = 14*.
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