Oak curtain crust.
Oak.
None.
Found fruiting on stems and larger branches including fallen stems and stumps.
Perennial. Tough. Often found in large wavy clusters. Individually small. Upper surface ridged with blackish red-brown zones. Margin a lighter brown. Pore surface a smooth reddish-brown.
None.
Consiered saprotrophic. Attributed to a white rot or soft rot of the wood substrate. When found on pruning wounds, the extent of the decay may need to be assessed and quantified.