Mycena cystidiosa is very widespread on forest litter in Autumn, growing in troupes. Caps to 25 mm, broadly conical, radially striate, not very translucent, pale brown-grey with a distinctive dark brown umbo, a pale bloom visible on the cap. Gills close, fairly deep, whitish; spore print white. Stems long (to 200 mm) and fairly tough, with bunches of white hairs at the base. NB: This species is accompanied by the strange phenomenon of extensive fine white hair-like tangled structures called "rhizomorphs", each terminated by a very tiny little cap or knob. These poke up from the litter in a tangled way into the air, and can be up to 300 mm long! They can be seen in most of these images. Mortimer Picnic Ground, Bunyip State Forest, 2009.