Herbs, creeping, perhaps perennial, ascending at apices; stems densely villosulous. Petiole 0.1-0.5 mm, densely villosulous; leaf blade drying thinly papery, adaxially grayish black, abaxially pale gray, cordiform-orbicular to ovate, 0.6-1.3 × 0.6-0.9 cm, both surfaces hispidulous at least on principal veins to glabrescent, base cordulate to subtruncate, apex obtuse; secondary veins 3 or 4 pairs; stipules deciduous, narrowly triangular, 1.5-2.5 mm glabrescent. Inflorescences cymose, 2-or 3-flowered, glabrescent, dichasial; peduncle 6-7 mm. Flowers subsessile. Calyx densely villosulous (Hainan plants) to glabrescent (Yunnan plants); hypanthium portion subglobose to oblanceoloid, ca. 1.5 mm; lobes narrowly lanceolate, 1.2-1.5 mm. Corolla white, funnelform, outside glabrous; tube ca. 8 mm; lobes lanceolate, 1-1.5 mm. Immature capsules ellipsoid-ovoid, ca. 2 mm, dehiscence unknown. Fl. Jul, young fr. Oct.
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