Description from Flora of China
Perennials 5-15 cm tall. Caudex blackish, with slender pale yellow and fibrous rootlets. Stems ascending to erect, slender, subquadrangular, simple. Leaves mostly basal, in a rosette, spatulate to obovate, 0.9-2.1 cm × 2-4 mm including long petiole, base narrowed, apex obtuse to rounded, midvein distinct. Stem leaves 2 or 3 pairs; petiole short; leaf blade spatulate to spatulate-elliptic, to 1.7 cm × 3 mm, base narrowed, apex obtuse to rounded, midvein distinct. Inflorescences panicles of cymes, many flowered, spreading branched. Flowers 5merous. Pedicel erect, to 5 mm, slender. Calyx tube ca. 0.5 mm; lobes linear-subulate, ca. 2 mm, margin narrowly membranous, apex acuminate, midvein indistinct. Corolla white, 2-3 mm in diam., tube ca. 0.5 mm; lobes lanceolate to ovate-lanceolate, 3-3.5 mm, apex acute. Nectaries 1 per corolla lobe, cupular, with a narrow scale, and few, long fimbriae. Filaments ca. 2 mm; anthers ovoid, ca. 0.5 mm. Style short, distinct; stigma lobes capitate. Capsules ovoid, ca. 5 mm. Seeds dark brown, subglobose, ca. 0.3 mm; seed coat warty. Fl. and fr. Aug-Nov.
* Hillsides; 1200-1300 m. Sichuan (Emei Shan).