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

23. Rosa willmottiae Hemsley, Bull. Misc. Inform. Kew. 1907: 317. 1907.

小叶蔷薇 xiao ye qiang wei

Shrubs 1–3 m tall. Branchlets slender, glabrous; prickles in pairs below leaves, numerous, terete, straight, to 1.2 cm, slender, abruptly flaring at base, old branches rarely bristly. Leaves including petiole 2–4 cm; stipules mostly adnate to petiole, free parts ovate-lanceolate, margin glandular serrate or entire; apex acute; rachis and petiole glabrous or sparsely pubescent, glandular-pubescent and shortly prickly; leaflets 7–9, rarely 11, elliptic, obovate, or suborbicular, 6–17 × 4–12 mm, abaxially glabrous or puberulous along midvein, glandular or not, adaxially glabrous, base subrounded, rarely broadly cuneate, margin simply serrate, doubly serrate above middle, apex rounded-obtuse. Flower solitary, ca. 3 cm in diam.; pedicel 1–1.5 cm, often glandular-pubescent; bracts ovate-lanceolate, abaxially with distinct midvein, margin glandular serrate, apex caudate. Hypanthium oblong to subglobose, glabrous. Sepals 5, triangular-lanceolate, abaxially glabrous, adaxially densely pubescent, margin entire, apex elongate. Petals 5, pink, obovate, base cuneate, apex emarginate. Styles free, much shorter than stamens, densely pubescent. Hip orange-red, oblong or subglobose, ca. 1 cm in diam., glabrous, shiny, when ripening apical part of hypanthium and sepals deciduous together. Fl. May–Jun, fr. Jul–Sep.

Thickets, scrub, open slopes, stream sides, roadsides; 1300--3800 m. Gansu, Qinghai, Shaanxi, Sichuan.

1 Leaflets doubly serrate at upper margin, simply serrate at lower margin, abaxially glabrous or puberulous along midvein, not glandular.   23a var. willmottiae
+ Leaflets doubly serrate along whole margin, abaxially unevenly glandular, margin teeth glandular apically.   23b var. glandulifera

Lower Taxa


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