Forty fungal species were isolated from decompsing rice stubbles. Aspergillus flavus, A. niger, Penicillium citrinum, Curvularia lunata, Trichoderma harzianum, Fusarium semitectum and Alternaria alternata were preponderant and present almost throughout the decomposition process while common fungi species like Humicola grisea, P. rubrum, Aspergillus luchuensis, dark mycelium were more frequent and abundant. The species of Duteromycetes were regnant while species of Mastigomycetes, Zygomycetes, Ascomycetes, Mycelia Sterilia were insignificant. Abundance and frequency of species were affected by environmental conditions. Among Deuteromycetes species of the family Moniliaceae and Dematiaceae were dominant.