First record of Hydrogonium gregarium (Pottiaceae, Bryophyta) in Russia: an interesting extension of the species’ distribution to the heart of the permafrost zone

Abstract

AbstractHydrogonium gregarium (Mitt.) Jan Kučera, previously known from Southeast Asia, Japan, and scattered occurrences in Pacific North America south to Mexico, is reported for the first time in Russia from the central part of Yakutia at the western foothills of the Verkhoyansk Range. Both morphology and nuclear ITS sequence data confirm its identity with H. gregarium var. gregarium. The species is described and illustrated, and its habitat is briefly discussed.