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Rubus lasiotrichos Focke


Description from Flora of China

Shrubs scandent. Branchlets brownish to reddish brown, terete, with soft hairs, bristles, and curved prickles. Leaves simple; petiole 6–8(–10) cm, with soft hairs, brownish bristles, and sparse, curved prickles; stipules caducous, free, brown, 1–1.2 × 0.7–1 cm, apex pectinately lobed, lobes lanceolate, soft hairy, bristly; blade suborbicular, 9–14 cm in diam., palmately 5-veined, abaxially densely brownish tomentose, with intermixed long hairs and sparse, curved small prickles along veins, adaxially villous along veins, base cordate, margin 5-lobed; lobes broadly triangular to triangular-lanceolate, terminal lobe larger, apex acute to acuminate, irregularly sharply serrate. Inflorescences few flowered, clusters in leaf axils, or terminal and short subracemes, to 6–9 cm; rachis and pedicels with dense soft hairs, brownish bristles, and sparse, minute prickles; bracts to 1.2 cm, apex lobed; lobes lanceolate, soft hairy, bristly. Pedicel 5–10 mm. Flowers 1.2–1.7 cm in diam. Calyx abaxially densely brownish tomentose and bristly; sepals narrowly lanceolate to lanceolate or ovate-lanceolate, 6–10 × 4–7 mm, apex acute or shortly acuminate to caudate, outer sepals often laciniate above middle; lobes linear, inner sepals entire. Petals white, suborbicular or broadly elliptic, slightly shorter than or nearly as long as sepals, glabrous, base shortly clawed. Stamens many, somewhat shorter than petals; filaments linear. Pistils slightly longer than stamens; style and ovary glabrous. Aggregate fruit red, subglobose, glabrous, with many drupelets, enclosed in calyx; pyrenes prominently rugulose. Fl. Jul–Aug, fr. Sep–Oct.

Dry slopes, rocky mountains, sparse forests, thickets; 1800--2700 m. S Guizhou, Sichuan, Yunnan [Thailand, Vietnam].


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