Hi there. Im a total novice fyi.
Found these in a client's yard growing from topsoil covered with bark.
Gills range from white, bluish grey to dark brown.
Stems are 20-50 mm long with. Thickness of 4-5mm. Hollow. Coloured white.
Cap diameter is around 25-30mm.
Light brown to white. Darker edges.
Smooth. Convex rounded shape. Bruises light blue.
Smells earthy similar to supermarket portabellos. Of all places found them under a yakka plant.