This is possibly Trogia aff infundibuliformis but until it is formally identified it will be left at the genus level of Trogia sp.
Fruit body:- striate, gills showing through transparent brown / grey surface of infundibuliform cap, to 3.5 cm diameter
Stipe:- central, cylindrical, flattened glabrous, concolurous with cap to 6 cm long embedded in wood.
Gills:- decurrent, in series of two, off white with transverse processes and interwoven patterns, darker toward stipe