Caps of Mystery Mushroom coming out of log - dark brown spore print (1 of 2)

Description:

These are the caps of some mystery mushrooms coming out of a log. They made chocolate brown spore prints. They're small and delicate. Thin stem (next picture will show underside and stem), crowded buff gills, hollow stem, fuzzy white base. Blurry picture of caps but the center is tan and then off-whitish the rest of cap, smooth, has minute hairs that sorta sparkle and catch the light.

Habitat:

log in Prospect Park

Notes:

small graceful looking mushrooms. note the fragments at the margin. could this be clue to a Psathyrella or Panaeolus? Do they grow out of logs? It's also hard to say what kind of brown the spores are, they're very dark brown, like a dark-chocolate bar, but could it also be purple-brown? Don't know.