Phylum: Basidiomycota Family: Physalacriaceae
Armillaria gallica Marxm. & Romagn.
Bulbous Honey Fungus
The main characteristic is the bulbous base; the cap scabers can be yellowy-brown or mainly brown. Initially parasitic then saprobic on broadleaved trees
References:
Knudsen & Vesterholt, editors (2012) Funga Nordica
Overall (2017) Fungi: Mushroom & Toadstools of parks, gardens, heaths and woodlands