Mycena maculata P. Karst. (1890)
Syn: Mycena occidentalis (Murrill)

This is one of the most common lignicolous Mycenas. It varies in appearance quite much, but can be recognized easily by its medium size fruitbodies and the tendency of the mature gills to blotch in pinkish/red.

The cap color of overly mature fruitbodies, changes significantly.

This Sierran collection looks like what Murrill called M. occidentalis and since has been synonymized to M. maculata

Fruitbodies in soft, rotten wood can develop long pseudorhiza

When the gills become fully pink, it may mimic Entoloma or Pluteus...