Common Names: Clustered bonnet, oak-stump bonnet cap
Sub-category: Mycena genus
The cap is light reddish-brown, with a diameter typically ranging from 1 to 4.5 cm. Initially conic to bell-shaped to convex, it flattens during maturity, developing visible surface grooves corresponding to the gills underneath the cap. The margin of the cap has minute but distinct scallops. The surface is moist and smooth, and hygrophanous. The cap frequently develops splits in the margin, or cracks in the disc (the central part of the cap). The flesh of the cap is thick in the center but thin elsewhere, grayish to whitish, fragile, and with a slightly mealy odor and taste. The gills have a decurrent attachment to the stem (that is, running down the length of the stem) and are a pale brownish color with tinges of red. They are broad (between 3 and 6 mm), and have a close to subdistant spacing, with about 26 to 35 gills reaching the stem. The fragile stem is 3 to 9 cm long by 0.15 to 0.4 cm thick and yellow to yellow-brown, becoming reddish-brown to orange-brown in the bottom half in maturity. The lower portion of young stems is covered with white flecks. Roughly equal in thickness at the top and bottom, the base of the stem is covered by a yellowish mycelium that can be up to a third of the length of the stem.
Grows in small groups or tufts on fallen logs and stumps, especially of oak.