Description from
Flora of China
Onosma longiflorum Duthie, Bull. Misc. Inform. Kew 1912: 40. 1912.
Corolla usually 3-3.3 cm. Filaments inserted ca. 2/3 from base of corolla tube. Style glabrous. Fl. and fr. Aug.
Gravelly slopes, meadows, thickets; 3000-4700 m. Xizang [Nepal].