Domain: Eukarya
Kingdom: Fungi
Subkingdom: Dikarya
Phylum: Basidiomycota
Common name: Corticioid fungi

The corticioid fungi are a very diverse and heterogeneous group of fungi in the Basidiomycota typically having basidiocarps (fruit bodies) that are formed on the undersides of dead tree trunks or branches. The corticioid fungi currently comprise around 1700 species worldwide, distributed amongst some 250 genera. 
Most corticioid fungi are wood decaying species, growing on the undersides of dead attached branches or on logs and fallen branches. A few are litter-rotting and produce fruit bodies underneath fallen leaves and compacted litter as well as on fallen wood.

Unidentified corticioid fungus-002.JPG 

Corticioid fungi under log-001.JPG 

Thanks to Wikipedia for text and information: https://creativecommons.org/licenses/by-sa/3.0/