Rubus howii Merr. & Chun

Shrubs scandent. Branchlets brown or reddish brown, terete, densely yellowish brown villous, with curved minute prickles. Leaves simple; petiole 1–2 cm, densely yellowish brown villous, with few small prickles; stipules caducous, free, 6–9 mm, deeply lobed, lobes linear, yellowish brown villous; blade oblong to ovate-oblong, 7–14 × 2–5 cm, lateral veins 6–8 pairs, prominent abaxially, impressed adaxially, both surfaces yellowish brown villous along veins, abaxially with sparse, minute prickles along midvein, base cordate, margin irregularly coarsely serrate, with 1 or 2 broadly ovate shallow lobes on each side below middle; lobes unequal, longer ones to 1.5 cm, apex acute to shortly acuminate. Inflorescences terminal, subracemes, 5–8 cm, 1- or few flowered, or flowers several in clusters in leaf axils; rachis, pedicels, and abaxial surface of calyx densely yellowish brown villous, with sparse, needle-like prickles; bracts caducous, 5–8 mm; lobes linear, yellowish brown villous. Pedicel ca. 1 cm. Flowers ca. 1 cm in diam. Sepals ovate-lanceolate to oblong-lanceolate, 6–8 mm, margin entire, apex acuminate, outer sepals gray tomentose marginally. Petals yellowish brown, elliptic, 5–7 × 4–5 mm, base shortly clawed, apex obtuse. Stamens many, shorter than petals; filaments glabrous. Pistils glabrous, longer than stamens. Fruit not seen. Fl. Apr–May.

Mixed forests. Medium elevations. Hainan.

Rubus howii là loài thực vật có hoa trong họ Hoa hồng. Loài này được Merr. & Chun miêu tả khoa học đầu tiên năm 1940.

裂叶悬钩子（学名：Rubus howii）是蔷薇科悬钩子属的植物，是中国的特有植物。分布在中国大陆的广东等地，一般生长在生中海拔杂木林中，目前尚未由人工引种栽培。