The highest potential of cellulose decomposition appeared in March caused by Phoma spp. The most frequent fungus in the litter was Phomopsis scobina with a versatile utilization pattern, and in the upper organic horizon, Mortierella spp. were able to utilize all the test compounds including gallic acid. A marked shift in the composition of the fungal flora was observed, when the litter was decomposed in June. -from Authors