Herbs perennial, 15--30 cm tall, not aromatic. Stems ascending to erect from creeping base, with raised lines descending from base of leaves, uppermost part ± minutely brown glandular. Leaves alternate, ± crowded toward apex of stem; upper leaves often 1--2 X as large as lower leaves; petiole 4--10 mm, narrowly winged by decurrent blade; leaf blade broadly ovate, 2.5--4.5 X 1.5--3 cm, glabrous or adaxially ± bristly, base rounded to truncate, rarely subcordate, margin obscurely undulate, apex acute to apiculate; veins 3 or 4 pairs; veinlets conspicuous abaxially. Pedicel 2--4.5 cm. Flowers solitary, axillary. Calyx lobes orbicular to lanceolate, 4--6 mm. Corolla yellow, 0.9--1.5 cm, 1.5--2 cm in diam., deeply parted; lobes narrowly oblong, 8--14 X 4--15 mm, apex obtuse. Filaments connate basally into a ca. 0.5 mm high ring, free parts very short; anthers 3.5--4 mm, basifixed, opening by apical pores. Capsule subglobose, ca. 4.5 mm in diam, indehiscent.

* Damp areas in open forests and ravines, mixed forests; 1200--2400 m. S Guizhou, S Sichuan, Yunnan