Milking bonnet growing through leaves
Very small mycena mushrooms growing through the hole in a leaf.
The saprobic fungus is an important leaf litter decomposer, and able to utilize all the major constituents of plant litter. It is especially adept at attacking cellulose and lignin, the latter of which is the second most abundant renewable organic compound in the biosphere.

Mycena galopus, commonly known as the milking bonnet or the milk-drop Mycena, is an inedible species of fungus in the Mycenaceae family of the Agaricales order. It produces small mushrooms that have grayish-brown, bell-shaped, radially-grooved caps up to 2.5 cm (1.0 in) wide. The gills are whitish to gray, widely spaced, and squarely attached to the stem. The slender stems are up to 8 cm (3.1 in) long, and pale gray at the top, becoming almost black at the hairy base.
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