Collared Parachute
Marasmius rotula

On fallen leaves, twigs, roots. Summer, autumn.
Fruiting bodies tiny. Cap 0.5–1.5 cm across, flattened-convex, always with a narrow pit pressed in the centre, pleated-furrowed, white, creamy white. Gills distant, thick, white, yellowish when old, attached to a collar that is not attached to the stem, like a collar. Stem 2-6 cm long, up to 1.5 pm thick, thread-like, blackish, dark reddish-brown. Flesh membranous, very thin, whitish. Characteristic features: in dry weather the fruiting bodies seem to wither, reviving after rain. Grows in small groups. Fairly common. Inedible. A valuable litter saprotroph.