A blackish, cushion shaped crustclustered on dead branches with bark, especially Birch trees and occasionally other broadleaf trees.
Infrequent throughout the year, sporulating durung Autumn.
Broadleaf woodland favouring Birch and occasionally other types of tree.
The fruiting body is initially reddish-brown, becoming quickly black, encrusting, extending to variable extents over the surface of the substrate, tends to be arranged on elongated masses.
Hard and black.
Inedible.
