28. Rubus gyamdaensis L. T. Lu & Boufford
柔毛悬钩子 rou mao xuan gou zi
Replaced synonym: Rubus pubifolius T. T. Yü & L. T. Lu, Acta Phytotax. Sin. 18: 498. 1980, not L. H. Bailey (1945).
Shrubs. Branchlets purplish red, cylindric, pubescent, with slender prickles. Leaves imparipinnate, 5–7-foliolate, rarely 3-foliolate on flower bearing branchlets; petiole 4–7 cm, petiolule of terminal leaflet 1–2 cm, lateral leaflets subsessile, petiolules and rachis pubescent, with slender prickles; stipules linear or linear-lanceolate, pubescent; blade of leaflets variable in shape, terminal leaflet ovate or ovate-lanceolate, sometimes 3-lobed, lateral leaflets elliptic or ovate, 4–7 × 2–4.5 cm, both surfaces pubescent, more densely so abaxially, base broadly cuneate to rounded, margin irregularly slenderly sharply serrate, coarsely serrate, or doubly serrate, apex acute to shortly acuminate. Inflorescences often 1-flowered. Pedicel 4–6 cm, pubescent, with sparse, intermixed short glandular hairs, with needle-like prickles. Flowers to 2 cm in diam. Calyx abaxially pubescent, unarmed or with sparse, needle-like prickles; sepals spreading after anthesis, ovate or ovate-lanceolate, 1–1.8(–2.5) cm, apex caudate. Petals white. Stamens many, in 2 or 3 whorls, much shorter than sepals; filaments linear, somewhat broadened and flattened basally. Pistils numerous; ovary densely tomentose. Fruit unknown. Fl. Jul–Aug.
Roadsides in mountains, forest margins, river sides; below 2400--4200 m. W Sichuan, Xizang.
