Russian Far East. Sakhalin Province. Kuriles Island Chain. Iturup Island. The forest massif alond stream flowing to Reydovoye Lake abt. in 2 km to South-West from Reydovo Settl. Larch-Birch-Oak-Mountain ash Forest with cover of Ilex rugosa, Taxus, Skinia and Calamogrosti . On alluvial fine-grained soil along stream.