Crust Fungus

A Phlebia sp crust fungus, probably either Phlebia rufa or else a pale form of Phlebia radiata.  It was growing on the still-standing trunk of a dead beech tree (Fagus sp).

I took the following specimen:

This yielded the following spores (magnification x600, field width 86um):

These spores are about 4.5 x 1.5um which agrees well with the 3.5-4.5 x 1-2um given for Phlebia rufa but also with the 4-5.5 x 1.5-2um given for Phlebia radiata on this page at Mycobank.

First two photos and specimen taken in the Wilderness, Whiteknights Park, Reading, UK, on 2014-01-11.