Shrubs climbing, small, with long repent branches. Branchlets dark gray or red-brown, terete, when young puberulous, soon glabrescent; prickles scattered, curved, to 7 mm, stout, flat, gradually tapering to broad base. Leaves including petiole 3.5–6 cm; stipules mostly adnate to petiole, free parts lanceolate, pubescent, margin irregularly serrate to fimbriate, glandular, apex shortly acuminate; leaflets 5–7(–9), greenish abaxially, dark green adaxially, elliptic, long elliptic, or elliptic-ovate, 1.5–3 × 0.8–1.5 cm, abaxially pubescent, along prominent midvein densely pubescent, sparsely shortly prickly and glandular-pubescent, adaxially along midvein pubescent, base broadly cuneate or subrounded, margin serrulate, apex acute or acuminate. Flowers 4–15, 1.5–3 cm in diam., in terminal corymb 5–7 cm in diam.; pedicel 1–3 cm, densely pubescent and glandular-pubescent or subglabrous; bracts 1–3, ovate, margin glandular, laciniate or serrate, apex acuminate. Hypanthium ovoid, puberulous and glandular-pubescent, glabrate. Sepals 5, deciduous, ovate-lanceolate, both surfaces pubescent or subglabrous, abaxially intermixed with glandular hairs, margin entire, apex long acuminate. Petals 5 or double, white or red, fragrant, obovate, base broadly cuneate, apex emarginate or rounded-obtuse. Styles connate into column, exserted, slightly longer than stamens, pubescent. Hip purple-brown, globose, 7–10 mm in diam., shiny. Fl. Mar–May, fr. Jun–Jul.
Home