Shrubs scandent, with ± dense yellowish tomentose axial parts. Stems terete. Petiole 5-9 cm; leaf blade broadly ovate-circular to nearly circular, 12-15 X 10-15 cm, abaxially densely yellowish tomentose, adaxially densely strigose or glabrescent, base shallowly cordate, apex abruptly acute; lateral veins 12-14 pairs. Cymes axillary, 9-40-flowered; peduncle 2.5-7 cm, angular; bracts deciduous. Pedicel ca. 5 mm. Sepals broadly ovate-circular, unequal, ca. 5 X 4 mm, outer ones larger than inner, yellowish tomentose abaxially, glabrous adaxially, apex rotund. Corolla white or reddish purple, funnelform, ca. 2 cm, midpetaline bands densely yel-lowish hirsute; limb deeply 5-lobed. Stamens and pistil slightly exserted; filaments slightly dilated and yellowish glandular pilose basally. Disc ringlike, ca. 1 mm high. Ovary glabrous. Berry ovoid, enclosed by enlarged calyx. Seeds 4 or fewer, black, ovoid-trigonous, smooth.

* Grassy mountain slopes, bamboo groves, forests; 700-1000 m. SW Guangxi, S Yunnan