细梗蔷薇 xi geng qiang wei

Shrubs erect, small, ca. 4 m tall. Branchlets terete, slender, glabrous or subglabrous, sometimes glandular-pubescent; prickles sparse, terete, mostly straight, to 1 cm, fine, abruptly flaring to a broad base. Leaves including petiole 5–8 cm; stipules mostly adnate to petiole, free parts auriculate, glabrous, margin glandular serrate; rachis and petiole shortly prickly and glandular-pubescent; leaflets 9–11, rarely 7, ovate or elliptic, 8–20 × 7–12 mm, abaxially glabrous or sparsely pubescent, often glandular, adaxially glabrous, base cuneate or subrounded, margin acutely doubly serrate or partly simply serrate, teeth sometimes glandular apically, apex acute or rounded-obtuse. Flower solitary, axillary, 2.5–3.5 cm in diam.; pedicel 1.5–2.5 cm, glabrous, sometimes sparsely glandular-pubescent; bracts absent. Hypanthium oblong-ovoid, glabrous. Sepals 5, ovate-lanceolate, leaflike, abaxially glabrous, adaxially white tomentose, margin entire or sometimes serrate. Petals 5, pink or deep red, obovate, base cuneate, apex emarginate. Styles free, slightly exserted, slightly shorter than stamens, densely pubescent. Hip red, obovoid or oblong-obovoid, 2–3 cm, with persistent, erect sepals; pedicel 1.5–2.5 cm, glabrous. Fl. Jul–Aug, fr. Sep–Oct.

Picea forests, scrub at forest margins, slopes; 3300--4500 m. Sichuan, Xizang, Yunnan.