Rosa praelucens Bijh.

Shrubs 2–3 m tall. Branchlets purple-brown, terete, robust; prickles few, scattered, straight or curved at tip, to 1.5 cm, robust, flat, gradually tapering to base to 2 cm across. Leaves including petiole 5–13(–20) cm; stipules mostly adnate to petiole, free parts triangular or lanceolate, both surfaces pubescent, margin glandular-pubescent, apex acuminate; rachis and petioles tomentose, sparsely shortly prickly; leaflets 7–13, obovate or elliptic, 1–3.5(–6) × 0.7–1.2(–2.3) cm, both surfaces densely puberulous, abaxially villous along veins, base rounded or broadly cuneate, margin simply serrate in upper 1/2, or inconspicuously doubly serrate, apex rounded-obtuse or acute. Flower solitary, (5–)8–9 cm in diam.; pedicel 3–6 cm, tomentose, sometimes sparsely glandular-pubescent; bracts at base, leaflike. Hypanthium depressed-globose, pubescent, glandular bristly. Sepals 5, slightly shorter than petals, ovate-lanceolate, leaflike, both surfaces tomentose-villous, sometimes abaxially glandular bristly at base, margin entire. Petals 5, red, broadly obovate, base broadly cuneate, apex rounded or emarginate. Carpels on projected torus at base of hypanthium; styles free, not exserted, shorter than stamens, densely villous. Hip green-brown, depressed-globose, 1–1.5 cm in diam., sparsely glandular prickly, with persistent, erect sepals. Fl. Jun–Jul.

NW Yunnan (Zhongdian Xian).

Woods on open slopes; 2700--3000 m.

Flowering from June to July.

Rosa praelucens is occurring in NW Yunnan of China.

Shrubs 2-3 m tall. Branchlets purple-brown, terete, robust; prickles few, scattered, straight or curved at tip, up to 1.6 cm long, robust, flat, gradually tapering to base to ca. 2 cm wide. Leaves including petiole 5-18 cm long; stipules mostly adnate to petiole, free parts triangular or lanceolate, both surfaces pubescent, margin glandular-pubescent, apex acuminate; rachis and petioles tomentose, sparsely shortly prickly; leaflets 6-13, obovate or elliptic, both surfaces densely puberulous, abaxially villous along veins, base rounded or broadly cuneate, margin simply serrate in upper part, or inconspicuously doubly serrate, apex rounded-obtuse or acute. Flower solitary, 8-10 cm in diameter; pedicel tomentose, sometimes sparsely glandular-pubescent; bracts at base, leaflike. Hypanthium depressed-globose, pubescent, glandular bristly. Sepals 5, slightly shorter than petals, ovate-lanceolate, leaflike, both surfaces tomentose-villous, sometimes abaxially glandular bristly at base, margin entire. Petals 5, red, broadly obovate, base broadly cuneate, apex rounded or emarginate. Carpels on projected torus at base of hypanthium; styles free, not exserted, shorter than stamens, densely villous. Hip green-brown, depressed-globose, sparsely glandular prickly, with persistent, erect sepals.

Growing in woods on open slope; 2500-3000 m.