172. Rubus oblongus T. T. Yu & L. T. Lu, Acta Phytotax. Sin. 20: 462. 1982.
长圆悬钩子 chang yuan xuan gou zi
Shrubs climbing. Branchlets grayish brown or brown, yellowish to grayish yellow tomentose, gradually glabrescent, with sparse, curved small prickles. Leaves simple; petiole 0.8–1.5 cm, yellowish or yellowish gray tomentose, glabrate in age, with sparse, curved minute prickles; stipules oblong-lanceolate, ca. 1 cm in diam., tomentose-villous when young, glabrescent, margin entire, rarely apically lobed; blade narrowly oblong or oblong-lanceolate, 10–15 × 1.5–3(–4) cm, lateral veins 8–11 pairs, prominent abaxially, leathery, abaxially densely yellowish tomentose, base broadly cuneate to rounded, margin with sparse, shallow sharp serrations, apex caudate. Inflorescences terminal and axillary, short racemes, axillary ones 3–4 cm, terminal ones longer; rachis and pedicels densely yellowish tomentose; bracts oblong-lanceolate, 5–9 mm, tomentose-villous, margin entire, rarely lobed. Pedicel 1–1.5 cm. Calyx abaxially densely tomentose-villous; sepals ovate-lanceolate or triangular-lanceolate, 6–9 mm, margin entire, apex acuminate to shortly caudate. Petals suborbicular, shorter than sepals, slightly pubescent basally, claws nearly absent. Stamens many; filaments broad, complanate, soft hairy or long hairy only on anthers. Pistils longer than stamens; style and ovary glabrous. Aggregate fruit red at maturity, subglobose, glabrous; pyrenes rugulose. Fl. May–Jun, fr. Jul–Aug.
Dense forested slopes, thickets; 1700--2100 m. Guizhou, Yunnan.