Swertia obtusa Ledeb. - grows in damp habitats in highlands of Central Asia and Siberia.
Open larch forest on the left bank of the Dzhazator River in its upper flow, between the falls of its right tributaries Chikty and Akbul, 2000 m above sea level, Kosh-Agach District, Altai Republic, West Siberia, Russia. 18th July 1998. O. Kosterin