白花紫金牛 bai hua zi jin niu

Shrubs ca. 2 m tall. Branchlets terete, 2.5-4 mm in diam., densely and minutely reddish glandular papillate, glabrescent. Petiole narrowly marginate, 5-8 mm; leaf blade elliptic or lanceolate, 7-10 × 2-4 cm, papery or subleathery, minutely reddish glandular papillate abaxially, base cuneate, margin subentire or crenulate and punctate, with marginal vascularized nodules, apex acute or acuminate, acumen to 0.5 mm; lateral veins 11-15 on each side of midrib, raised on both surfaces, marginal vein absent. Panicles terminal corymb of umbels, minutely puberulent, on specialized lateral branches 11-30 cm. Flowers membranous, hyaline, ca. 6 mm. Pedicel 6-13 mm, minutely puberulent. Sepals narrowly ovate, 2.5-3 mm, epunctate, glabrous outside, short puberulent inside, margin entire, glabrous, apex long attentuate. Petals nearly free, ovate, 5-6 mm, epunctate, glabrous, margin entire, glabrous, apex long attenuate. Stamens shorter than petals; filaments shorter than anthers; anthers lanceolate, not punctate dorsally, apex acute. Pistil subequalling petals; ovary glabrous; ovules ca. 5, uniseriate. Fruit reddish, globose, ca. 6 mm in diam., sparsely punctate. Fl. May-Jun, fr. Oct-Dec.

Dense mixed forests, shrubby areas, hillsides; 600-1200 m. Guangxi, Hainan [Vietnam]