Description from Flora of China
Herbs perennial, glabrous, to 40 cm tall. Stems erect, branched above middle. Leaves alternate, occasionally subopposite in branches; petiole 3--5 mm; leaf blade ovate-lanceolate, 4--5 X 1.5--2 cm, abaxially glaucous, with or without few obscure dots, adaxially green, brown glandular punctate near margin, base cuneate, obscurely undulate, apex subacuminate. Leaves on branches subsessile, smaller. Racemes terminal, 9--12 cm; bracts linear-lanceolate to subulate, slightly shorter than pedicels. Lowest pedicels slightly angular, to 1 cm, gradually reduced upward. Calyx lobes lanceolate, ca. 4.5 mm, reddish brown striate, margin membranous. Corolla white, ca. 6 mm; tube ca. 2.5 mm; lobes suborbicular, ca. 3.5 mm wide, densely reddish brown striate near apex, base clawed; sinus between lobes rounded. Stamens exserted; filaments adnate to base of corolla lobes; anthers ovate, dorsifixed, ca. 1 mm. Ovary glabrous; style 5.5--6 mm. Capsule subglobose, ca. 4 mm in diam. Fl. Jun-Jul.
* Ravines; ca. 2200 m. SW Sichuan (Dechang Xian).