Abstract
During the study of mycobiota in the Russian Far East several interesting collections belonging to the genera Marasmius and Cryptomarasmius were made. Here we report the first records of Marasmius cf. ochroleucus, M. occultatiformis and Cryptomarasmius aucubae for the investigated territory. Two species (Marasmius macrocystidiosus, M. insolitus) and one variety (M. cohaerens var. mandshuricus) are described as new. Detailed morphological descriptions and illustrations are given. The relationships of the studied taxa with close species are discussed. Molecular phylogenetic reconstructions based on ITS and nrLSU data sets were conducted.