[In Russian; the Russian abstract translated: ] New data on the distribution of rare species of the family Mycocaliciaceae are presented. Stenocybe flexuosa is reported for the first time for Eurasia, Phaeocalicium betulinum, P. boreale, P. interruptum and P. praecedens for Asia, P. ahtii for Russia and P. pinaceum for the Far East and China. The problem of differentiating the genera Phaeocalicium and Stenocybe is discussed, and a brief ecological and geographical characterisation is given. A key for the identification of 14 species of Phaeocalicium and Stenocybe occurring in Russia and neighbouring areas is given.