Mycena fumosa is a wood-rotting Australian fungus, found in groups or clusters on litter, bark, dead wood in various forest types. (It resembles Mycena interrupta without the blue colour.) Cap to 15 mm, ovoid, then broadly convex to flattened, translucent-striate, shiny and viscid, colour creamy greyish-brown, margin paler; flesh watery and thin (6.5 mm high). Gills almost free, distant to close, white, gill edge finely toothed or powdery (pruinose). Stem central, (40x2.5 mm), wider at base, smooth to greasy, short hairs near base; colour whitish at top, often darkening to base. NB: Characteristic white or brownish basal disc. Baldry Crossing, Green's Bush, 2010.