Description from Flora of China
Herbs biennial, glabrous. Rootstock ± woody, rooting at nodes. Stems branched from base, erect, 5-16 cm, sometimes apically mammillate. Proximal stem leaves 4-verticillate, others alternate; leaf blade obovate-linear, 4-18 mm, basal spur obtuse, margin mammillate, apex obtuse. Cyme corymbiform, many flowered; bracts leaflike. Flowers unequally 5-merous; pedicel 2-6 mm. Sepals adaxially sometimes reddish brown striped toward apex, linear to linear-oblong, unequal, 3.1-3.8 mm, base spurless, apex obtuse and long papillate. Petals yellow, oblong, 3.6-7 mm, base connate for 0.2-0.7 mm, apex subacute and mucronate. Stamens 5 or 10; antepetalous ones 1.8-4.2 mm, inserted 1-1.7 mm from petal base. Nectar scales broadly linear-spatulate to subquadrangular, 0.4-0.6 mm, apex retuse. Carpels basally connate for 1.1-1.3 mm. Styles ca. 1.8 mm. Follicles ovoid-oblong, 3.2-6 mm, many seeded. Seeds ovoid, 0.6-0.7 mm, minutely papilliferous. Fl. Sep-Nov, fr. Oct-Dec.
* Rocks in Picea forests, among mosses on limestone rocks in alpine zone, rocks in valleys, rock walls; 1500-3500 m. SW Sichuan, NW Yunnan.