Rubus flagelliflorus Focke

Shrubs scandent or creeping. Branchlets brown or reddish brown, densely gray tomentose when young, glabrescent, with sparse, curved minute prickles. Leaves simple; petiole 3–6 cm, densely gray tomentose when young, glabrescent, with sparse, curved minute prickles; stipules caducous, free, brown, 7–12 mm, yellow tomentose-villous, apex palmately lobed, lobes lanceolate; blade ovate or narrowly ovate, 7–15 × 5–9 cm, palmately 5-veined, lateral veins 4 or 5 pairs, raised abaxially, papery, abaxially densely rusty yellow tomentose, adaxially glabrous, base deeply cordate, margin often undivided or slightly undulate, unevenly obtusely serrate, apex acute to shortly acuminate. Inflorescences short racemes, 2.5–5 cm, few flowered, or flowers several in clusters; rachis and pedicels densely yellow tomentose-villous; bracts brown, 6–11 mm, tomentose-villous, palmately divided apically; lobes lanceolate. Pedicel 1–2 cm. Flowers 1–1.2 cm in diam. Calyx abaxially densely yellow tomentose-villous; tube cupular; sepals reflexed after anthesis, ovate-lanceolate, 5–8 × 3–5 mm, apex shortly acuminate to acuminate; outer sepals broader than inner sepals, margin 2- or 3-lobed, inner sepals with entire margin. Petals white, suborbicular, much shorter than sepals, basally puberulous. Stamens many, glabrous or slightly pilose; filaments somewhat longer than petals, apex subulate; anthers glabrous. Pistils slightly longer than stamens; styles and ovaries often glabrous. Aggregate fruit black at maturity, semiglobose, 1–1.3 cm in diam., glabrous; pyrenes smooth or slightly rugose. Fl. May–Jun, fr. Jul–Aug.

Fujian, Guizhou, Hubei, Hunan, Shaanxi, Sichuan, Taiwan (Lan Yu).

Waste places on hills, rock cliffs, slopes, valleys; 900--1500 m.

Rubus flagelliflorus là loài thực vật có hoa trong họ Hoa hồng. Loài này được Focke miêu tả khoa học đầu tiên năm 1900.

攀枝莓（学名：Rubus flagelliflorus），又名少花乌泡（湖北植物志） 、对嘴泡、老雅泡、阿格的、裂緣苞懸鉤子，为蔷薇科悬钩子属的植物，为中国的特有植物。分布在中国大陆的贵州、湖北、四川、湖南、陕西等地，生长于海拔900米至1,500米的地区，多生在荒山岩壁和山谷坡地杂木林内，目前尚未由人工引种栽培。