Shelf Fungus - Polypores - Ceramic Parchment Crust Fungus

These ceramic or parchment fungus are full of pores.

All on one branch.

This is the largest. No curling down from the edge. 

Xylobolus frustulatus, commonly known as the ceramic fungus or ceramic parchment, is an inedible species of crust fungus in the Stereaceae family. The fruit body forms small, hard, flat crust-like aggregations that resemble broken pieces of ceramic tile. These pieces are initially whitish before turning yellow-brown to gray-brown in age. The spore-bearing cells cover the upper surfaces of the fruit body. A saprobic species, it grows on well-decayed oak wood.