Trollius stenopetalus Stapf.

Stems 60--70 cm tall, usually branched at middle or above. Basal leaves 1--3; petiole 11--30 cm, base narrowly sheathed; leaf blade not green when dried, pentagonal, 5.9--9 × 9.5--18 cm, base deeply cordate, 3-parted; central lobe rhombic or broadly rhombic, 3-lobed, with several lobules and dentate margin; lateral lobes obliquely flabellate, unequally 2-fid. Cauline leaves 3 or 4, proximal ones similar to basal leaves, distal ones diminishing. Inflorescence cymose, 2- or 3-flowered. Sepals 5, yellow, not green when dried, obovate or broadly obovate, rarely elliptic, 1.2--1.6 × 0.9--1.6 cm, caducous. Petals nearly as long as stamens, ca. 8 mm, apex not or slightly widened. Stamens 8--10 mm. Follicles 20--30, 1--1.4 cm × ca. 3 mm; persistent style turning outside, ca. 1 mm. Fl. Jul, fr. Aug.

* Grassy slopes; 1800--2400 m. S Gansu, S Shaanxi, N Sichuan.