梯脉紫金牛 ti mai zi jin niu

Subshrubs to shrubs, stoloniferous, 50-70 cm. Branchlets terete, succulent, 7-10 mm in diam., hirsute-tomentose with simple stramineous hairs. Leaves pseudoverticillate; petiole deeply canaliculate, broadly winged by decurrent blade, up to 2 cm; leaf blade oblanceolate or obovate, rarely elliptic, 20-40 × 6-12.6 cm, papery, base attenuate or cuneate, margin pectinate-dentate, teeth apiculate, apex broadly acute or obtuse; midrib hirsute adaxially when young, glabrescent, stramineous hirsute abaxially; lateral veins ca. 25-35 on each side of midrib, marginal vein absent. Inflorescences axillary panicles, branches in umbels, ca. 10 cm, appressed long hirsute and puberulent. Flowers papery, pink or red, 3-4 mm. Pedicel 5-8(-10) mm, reddish hirsute. Sepals ovate, 1.3-1.5 mm, puberulent, punctate, margin ciliate, apex acute. Petals nearly free, broadly elliptic or ovate, black punctate, glabrous, margin entire, apex obtuse or rounded. Stamens subequalling petals; filaments obsolete; anthers ovate, not punctate dorsally, apex acute. Pistil subequalling petals; ovary puberulent; ovules 4-5(-7), uniseriate. Fruit red, globose, 7-8 mm in diam., pubescent, pellucid punctate. Fl. Apr, fr. Dec.

Dense broad-leaved forests, hillsides, valleys, dark damp places, along streams, rock crevices. Hainan [Vietnam]