多苞蔷薇 duo bao qiang wei

Rosa latibracteata Boulenger; R. orbicularis Baker; R. reducta Baker; R. rotundibracteata Cardot.

Shrubs to 2.5 m tall. Branchlets terete, slender, glabrous; prickles scattered and in pairs below leaves, terete, straight, to 1 cm, abruptly tapering to turgid base. Leaves including petiole 5–9 cm; stipules large, mostly adnate to petiole, free parts ovate, glabrous, margin glandular serrate, apex shortly acuminate; rachis and petiole glabrous or sparsely glandular-pubescent and puberulous, sparsely shortly prickly; leaflets (5–)7–9, ovate, obovate, or suborbicular, 8–15 × 5–10 mm, glabrous or abaxially sparsely pubescent along veins, sometimes glandular, with prominent midvein and lateral veins, base subrounded or broadly cuneate, margin simply serrate, entire near base, apex rounded-obtuse or acute. Flowers 2 or 3, or several in corymb or panicle, rarely solitary, (2–)3–5 cm in diam.; pedicel 0.5–3 cm, densely stipitate glandular; bracts 3–5 or 8–10 in two whorls at base of corymb, those of external whorl ovate, those of internal one lanceolate, glabrous, margin glandular serrulate. Hypanthium subglobose, stipitate glandular. Sepals 5, triangular-lanceolate, 1.1–1.5 cm, leaflike, abaxially glabrous or sparsely to densely stipitate pubescent, adaxially densely pubescent, margin entire. Petals 5, reddish, obovate, base broadly cuneate, apex emarginate. Styles free, slightly exserted, nearly equaling stamens, villous. Hip red, subglobose, 6–10 mm in diam.; stipitate glandular, with persistent, erect sepals. Fl. May–Jul, fr. Jul–Oct.

Open places near forest margins; 2100--2500 m. Sichuan, Yunnan.