Shrubs low, ca. 1 m tall. Branches spreading or curved, glabrous; branchlets of present year purple-brown or red-brown; prickles dense to sparse, terete, straight or slightly curved, to 4 mm, fine, bristlelike, abruptly broadening at base, intermixed with smaller bristles. Leaves including petiole 4–8 cm; stipules mostly adnate to petiole, free part ovate, margin entire or serrate, teeth often glandular apically; rachis and petiole sparsely prickly and glandular-pubescent; leaflets (5–)7–9(–11), oblong, oblong-ovate, or suborbicular, 1–2.2 × 0.6–1.2 cm, glabrous, base rounded or broadly cuneate, margin simply serrate or partly doubly serrate, teeth glandular apically when young, apex rounded-obtuse or acute. Flowers solitary, or 2 or 3 and fasciculate, axillary, 2–6 cm in diam.; pedicel 1.5–3.5 cm, sparsely pubescent or glabrescent, glandular-pubescent or not; bracts absent. Hypanthium subglobose, glabrous. Sepals lanceolate, abaxially glabrous, adaxially pubescent, margin entire, apex acuminate or caudate-acuminate. Petals 5, white, pink, or yellowish, broadly obovate, base broadly cuneate, apex emarginate. Styles free, much shorter than stamens, pubescent. Hip black or dark brown, subglobose, 1–1.6 cm in diam., glabrous, shiny, with persistent sepals; pedicel to 4 cm, often glandular. Fl. May–Jun, fr. Oct–Sep.
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Prickles internodal, dense on main stems, sparser on some flowering branches, paired or single, erect or ± curved, terete, 5–6 × 1–3 mm, mixed with shorter prickles and usually aciculi. Leaves: stipules 9–14 × 2–4 mm, auricles 2.5–5 mm, margins entire or serrate-glandular, surfaces glabrous; petiole and rachis with pricklets, pubescent, glandular; leaflets: blade oblong-ovate or suborbiculate, (5–)7–9(–11) × 5–8 mm, or broadly elliptic, 5–22 × 5–12 mm, base obtuse or rounded to broadly cuneate, margins 1-serrate, sometimes multi-serrate, teeth 8–12 per side, gland-tipped, apex obtuse to acute. Pedicels: bracts absent. Flowers: hypanthium 3–5 × 3–4 mm; sepal tip 2–3 mm, apex acuminate or caudate-acuminate; petals white, 15–25 × 14–23 mm; styles exsert 2 mm beyond stylar orifice of hypanthial disc. Achenes 8–12, dark tan, 4 × 2.5 mm. 2n = 28.
A shrub. It grows up to 2 m high. The branches have many straight thin thorns. The leaves are compound with 5-11 rounded leaflets. The flowers are white or yellow. They occur singly. The fruit are brownish-red to black. The fruit are high in tannin.
Can be grown by cuttings or seedlings. Seeds needs scarification.
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