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FOC | Family List | FOC Vol. 9 | Rosaceae | Rosa

22. Rosa prattii Hemsley. J. Linn. Soc., Bot. 29: 307. 1892.

铁杆蔷薇 tie gan qiang wei

Shrubs 1–2.5 m tall. Branchlets purple-brown or red-brown, terete, slightly curved, slender; prickles scattered, yellow, straight, to 1 cm, sometimes intermixed with numerous bristles; bristles sometimes glandular. Leaves including petiole 5–10 cm; stipules mostly adnate to petiole, free parts ovate, margin glandular serrate, apex acuminate; rachis and petiole pubescent and glandular-pubescent, occasionally with small prickles; leaflets 7–15, elliptic or oblong, 6–20 × 4–10 mm, abaxially pubescent along prominent midvein, adaxially glabrous, with concave midvein, base subrounded or broadly cuneate, margin serrulate, sometimes near base entire, slightly revolute, apex acute or obtuse. Flowers 2–7, in umbel-like corymb, rarely solitary, ca. 2 cm in diam.; pedicel 8–30 mm, glandular-pubescent; bracts ovate, margin glandular serrate, apex acuminate or caudate. Hypanthium fusiform, glabrous or glandular-pubescent. Sepals 5, deciduous, ovate-lanceolate, abaxially sparsely pubescent and glandular-pubescent, adaxially densely pubescent, margin entire, apex dilated and caudate. Petals 5, pink, broadly obovate, base broadly cuneate, apex emarginate. Styles free, much shorter than stamens, densely villous. Hip deep red, ovoid or ellipsoid, 5–8 mm in diam., with a short neck, after ripening apical part of hypanthium and sepals deciduous together. Fl. May–Jul, fr. Aug–Oct.

Broad-leaved and coniferous forests, scrub on open slopes; 1900--3000 m. Gansu, Sichuan, Yunnan.


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