Birch Polypore (Piptoporus betulinus)
Anywhere in the county, indeed country, where there are Silver Birch trees you will find some with the Polypore fungus. The fungus is named 'betulinus' as it is only ever found on the Silver Birch; 'Betulina'.
It is parasitic and will eventually destroy its host tree but it is believed that it only attacks dying trees and thereby hastens the natural recycling process. Silver Birch is a short lived tree in any event.
The fruiting bodies, as seen above, are visible all year although spores are only released in the autumn. They are not edible.