Description from Flora of China
Perennials. Stems creeping, densely villous with multicellular hairs. Petiole of lower leaves ca. 7 mm, shorter upward; leaf blade triangular-orbicular, 0.6-2 X 0.6-1.5 cm, sparsely villous with multicellular hairs, margin with 2 or 3 pairs of deeply incised coarse teeth with tips toward leaf apex, teeth margin recurved and thickened. Racemes 1, axillary from upper leaves, 1-4-flowered, villous with multicellular hairs (except for corolla); peduncle 1-3 cm; bracts linear to linear-lanceolate, shorter than pedicel. Pedicel ca. 6 mm, curved at anthesis, straight in fruit. Calyx 4-lobed; lobes narrowly elliptic, ca. 4 X 1.5 mm, subequal, with sparse multicellular glandular hairs, apex obtuse. Corolla rotate; tube less than 1.5 mm; throat hairy. Capsule pliciform-rhomboid, strongly compressed, 4-5 X 8-9 mm, margin apically ciliate with multicellular glandular hairs, emarginate. Style 2.5-3 mm, reflexed. Seeds 2-10 per locule, oblong-ovoid, flattened, slightly convex, ca. 1.6 mm. Fl. May-Sep.
* Moist forests; 2500-3500 m. Taiwan.