Description from
Flora of China
Hypericum yunnanense Franchet, Bull. Soc. Bot. France 33: 437. 1886; H. centiflorum H. Léveillé; H. mairei H. Léveillé (1912), not H. Lévéille (1915); H. pseudopetiolatum R. Keller var. grandiflorum Pampanini; H. qinlingense X. C. Du & Y. Ren.
Stems erect to decumbent, rooting at base, branches curved-ascending. Leaf blade lanceolate or oblong to oblong-lanceolate (broadest at or below middle), 1.5-4 × 0.6-1.6 cm. Inflorescence from 2 or 3 nodes. Styles 1.5-2.2 mm, 1-1.3 × as long as ovary.
Grassy slopes, cliffs, roadsides, forest margins, grasslands; (300-)800-3100 m. Fujian, Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangxi, Shaanxi, Sichuan, Yunnan [N Vietnam].