Seventy-five species in addition to 5 varieties of cellulose-decomposing which belong to 27 genera were collected during this investigation. Aspergillus (12 species + 4 varieties), Alternaria (4 species), Stachybotrys (3 species + 1 variety), and Penicillium (12 species) were of high frequency of occurrence, of which A. fumigatus, A. niger, A. terreus, A. alternata, A. tenuissima, S. atra, P. citrinum and P. corylophilum were the most common. Six genera were of moderate frequency and these were Botryotrichum (2 species), Macrophomina (1 species), Drechslera (5 species), Ulocladium (4 species), Chaetomium (7 species) and Curvularia (4 species) of which B. atrogriseum, D. spicifera, D. sativus, U botrytis, C. spirale and C. lunata were the most prevalent. Five and twelve genera were recovered on cellulose-Czapek's agar plates in low and rare frequency of occurrence, respectively. Total count Aspergillus A. fumigatus Fres. A. niger van Tieghem A. terreus Thom A. flavus Link A. sydowi (Bain. & Sart.) Thorn & Church A.flavipes (Bain. & Sart.) Thom & Church A. ocharceus Wilhelm A. candidus Link A. flavus var. columnaris Link A. versicolor (Vuill.) Tiraboschi A. ustus (Bain.) Thom & Church A. clavatus Desmazieres A. nidulans var. acristatus Fennell & Raper A. nidulans var. echinulatus Fennell & Raper A. nidulans var. latus Thom& Raper A. terricola Nakazawa Alternar[a A. alternata (Fr.) Keissler A. tenuissima (Fr.) Wiltshire A. chlamydospora Mouchacca A. phragmospora van Emden