Description from Flora of China
Branchlets soft, sparsely tomentose. Leaves opposite; petiole 1.2-2.5 cm; leaf blade broadly elliptic, 4-7 × 2.5-4.5 cm, sparsely tomentose especially at margin, apex acuminate. Flowers perfect, large. Inflorescences terminal or axillary spikes, 3-5 cm, less branched; rachis hairy. Bracts persistent, ovate, ca. 2.6 mm, bracteoles equaling bracts, falling off with perianth in fruit. Tepals straight, ovate-lanceolate, ca. 4.5 mm, enlarging to 9 mm in fruit, hairy at apex. Stamens 5; filaments linear, hairy, shortly connate at base, alternating with oblong, fimbriate pseudostaminodes; anthers 2-loculed. Ovary oblong, compressed, ca. 4.5 × 3 mm; style ca. 3.5 mm, slender, hairy at base; stigmas minute. Utricles oblong, ca. 3.5 mm, hairy at apex. Seeds shiny.
Forests; 900-2300 m. Guangxi, Yunnan [Bhutan, India, Myanmar, Sikkim].