Clusters of these mystery mushrooms on long thin stalks were on woodchips lining a path.
Woodchips lining walking path in the Ravine, Prospect Park.
Black gills with white edges. Tried taking spore print but they shriveled up. Note striation from margin of cap. Note "triangular veil remnants at cap margin", is this a sign of Panaeolus? A picture of the cap underside is next for you to get a closer look.