Coprinellus (Ozonium state)

This shows itself as a thick but loose and shaggy orange or orange-brown mat on wood. As an analogy, think of thick, orange shag-pile  carpet. The fungal mat is a sterile, asexual state produced by species of Coprinellus. Sometimes you will see Coprinellus mushrooms growing from the mat.

In days gone by Ozonium appeared as a separate genus name.

Look-alikes

Various fungi produce mycelial growth that is brownish-orange, but not as  such a thick, loose and shaggy mat.

Regional distribution

Coprinellus (Ozonium state) is listed in the following regions: