Small brown fungus

Small brown fungus

Observation - Small brown fungus. Description: This small fungus emerged (in a small troop of perhaps 4 or 5) from a mossy patch underneath mature broadleaf trees (oak and sweet chestnut). Any ideas?

This small fungus emerged (in a small troop of perhaps 4 or 5) from a mossy patch underneath mature broadleaf trees (oak and sweet chestnut). Any ideas?