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

178. Rubus kawakamii Hayata, J. Coll. Sci. Imp. Univ. Tokyo. 30(1): 91. 1911.

桑叶悬钩子 sang ye xuan gou zi

Shrubs erect, to 1.5 m tall. Branchlets brownish to reddish brown, terete, tomentose-villous when young, later glabrate, with few small prickles. Leaves simple; petiole 1–2 cm, slender, tomentose-villous when young, glabrate in age, unarmed or with sparse, small prickles; stipules caducous, oblong, 6–10 × 2–4 mm, soft hairy, margin entire or with a few teeth; blade oblong or ovate-oblong, 6–10 × 2.5–5 cm, lateral veins 7–10 pairs, midvein and veins raised abaxially, slightly impressed adaxially, papery, abaxially slightly tomentose-villous along veins, glabrate in age, adaxially glabrous but hirsute along midvein, base broadly cuneate to subcordate, margin undivided, unevenly sharply serrate, apex long acuminate. Inflorescences terminal, corymbose racemes, 3–6 cm, 5–9-flowered; rachis and pedicels tomentose-villous, with small prickles, with few to many shortly stalked glands; bracts narrowly oblong to ovate, 6–9 × 2–4 mm, soft hairy, margin apically divided or with few teeth along margin. Pedicel 1.5–2.5 cm. Flowers 1–1.5 cm in diam. Calyx campanulate, abaxially tomentose, unarmed or with sparse, minute needle-like prickles, sometimes with shortly stalked glands; sepals erect-spreading after anthesis, triangular-ovate, 5–8 × 2–3 mm, margin usually undivided, apex acute. Petals obovate, 5–7 × 5–6 mm, both surfaces soft hairy, base shortly clawed. Stamens numerous, shorter than petals; filaments linear, broadened and flattened basally. Pistils slightly shorter than or nearly as long as stamens; style and ovary glabrous. Aggregate fruit subglobose, 7–10 mm, glabrous; pyrenes reniform, smooth or somewhat shallowly rugose. Fl. Jun–Jul, fr. Aug–Sep. 2n = 28*.

Mountains; 2000--2800 m. C Taiwan.


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