New findings of <i>Cypripedium macranthos </i>(Orchidaceae) in the periglacial zone of the North Chuya glaciation centre, Republic of Altai
Information about the finding of a rare species Cypripedium macranthos Sw. in the periglacial zone of the North-Chuya centre of glaciation (the Russian Altai) in the mountain-glacial basin of the Aktru River, on the moraine complex of the Bolshoi Aktru glacier at the altitude of 2350-2410 m above sea level is given. This information expands the concept of the ecology of the species. In the high-mountain habitats, Cypripedium macranthos grows as a petrophyte.