Variability of selerotia in some species of genus Typhula

On the basis of Typhula inearnata Lasch ex Fr., Typhula phacorrhiza Fr. and Typhula variabilis Riess. sclerotia morphology comparison the dependence of their structure upon the conditions in which they come into existence has boen found. The sclerotia show a larger variability in natural environment than in culture. The principle differences lie in the structure of enveloping layers: epidermoid, cuticle and the cuter part of bark