Description from
Flora of China
Swertia rotata Linnaeus, Sp. Pl. 1: 226. 1753.
Stem branched from base or middle. Leaves linear, linear-lanceolate, or lanceolate. Panicle lax. Calyx as long as corolla. 2n = 10.
Beside streams, hillsides, grasslands, scrub; 1400-4200 m. Gansu, Guizhou, Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, Xinjiang, Yunnan [Japan, Kazakhstan, Mongolia, Russia; Europe, North America].