Fungus on Oak.

Fungus on Oak.

Observation - Fungus on Oak. - UK and Ireland. Description: Fungus on a dead oak sapling - it was upright, but fell over, rotted through, when I pushed it. The fungus is clearly old, old enough to have good moss growth on top. It's not exuding, but with the oak and its age I wonder it it could be an aged Inonot

Fungus on a dead oak sapling - it was upright, but fell over, rotted through, when I pushed it. The fungus is clearly old, old enough to have good moss growth on top. It's not exuding, but with the oak and its age I wonder it it could be an aged Inonotus dryadeus. If not, possibly a Phellinus? (Added:) Black reaction to KOH - see 5th photo.