These were growing in a large cluster and had caps ~ 4.5 cm high. Stems were up to 13.5 cm long and mostly hollow. The were relatively mature and I couldn't get spores to drop. Spores were ~ 9.0-10.2 X 6.0-7.1 microns and only sl. rough. P. piceae seems the closet fit and this species has been recorded from JSF in the past. Edit; 11-7-2015 Looking at L. Norvell's Phaeocollybia book, these look very much like P. gregaria, the cap colors and the very "gregarius" fruiting pattern seem very close.