Tunkinsky District. East Sayan Mts. Tunkinsky Range. Valley of Kyngyrga River, near Arshan Peak. Larix sibirica-Pinus sylvestris-Betula platyphylla-Salix sp.-Rhododendron dahuricum-Ledum palustre-Bergenia crassifolia-Vaccinium vitis-idaea-moss forest on W-facing mountain slope. On soil of trail.