云南悬钩子 yun nan xuan gou zi

Shrubs. Branchlets purplish brown, terete, glabrous, with sparse, curved prickles. Leaves simple; petiole 1–2 cm, thinly pubescent, with remote, curved minute prickles; stipules early caducous, 6–8 mm, pubescent, margin laciniate, lobes linear or lanceolate; blade elliptic or oblong, 6–12 × 3–7 cm, lateral veins 7 or 8 pairs, slightly raised abaxially, glabrous except veins on both surfaces pubescent, base subtruncate to slightly cordate, margin unevenly coarsely obtusely dentate, apex shortly acuminate. Inflorescences terminal or axillary, terminal ones narrow cymose panicles, 10–14 cm, many flowered, axillary ones subracemes, shorter; rachis and pedicels thinly pubescent; bracts caducous, lanceolate, 5–7 mm, pubescent, apex laciniate, lobes linear or lanceolate. Pedicel ca. 1 cm. Flowers 7–10 mm in diam. Calyx abaxially thinly pubescent; sepals ovate or triangular-ovate, 2.5–3.5 × 2–3 mm, margin tomentose, undivided, apex obtuse, rarely acute. Petals obovate or oblong, 3–4 × 2.5–3.5 mm, thinly pubescent basally, base clawed. Stamens many, nearly as long as or slightly shorter than petals; filaments linear, broader toward base. Pistils ca. 10–15, longer than stamens; style and ovary glabrous. Fruit unknown.

Mountainous regions; Low elevations. NW Yunnan.