Description from Flora of China
Herbs perennial, glabrous, 10--25 cm tall. Stems deep reddish brown, terete or slightly angular in upper part, usually simple. Leaves 2--4, in a subterminal whorl; petiole 5--8 mm, verrucose; leaf blade broadly ovate to ovate-elliptic, 5--11.5 X 2.7--3.8 cm, papery, base rounded to truncate, margin narrowly revolute, apex acute; midvein and 5 or 6 pairs of veins raised abaxially, impressed adaxially, prominently reticulate. Racemes ± umbellate, in axils of leaves, rarely arising from leaf scars on lower part of stem, 2--6-flowered; rachis ca. 2 mm; bracts linear-lanceolate, 1--1.5 mm. Pedicel 1.5--3 cm. Calyx lobes ovate, ca. 2.5 X 1.2 mm, minutely glandular on margin and inside, apex acute. Corolla yellow, deeply parted; lobes ovate-oblong, ca. 7 X 4 mm, apex obtuse. Filaments connate basally into a ring, free parts ca. 1 mm; anthers linear, ca. 4.8 mm, basifixed, opening by apical pores. Capsule globose, ca. 3 mm in diam. Fl. Jul.
* Mountain streamsides and valleys; ca. 900 m. N Guangxi, S Guizhou (Dushan Xian).