[Identified by L. C. C. Krieger as 'Pholiota dura']
H. A. Kelly
L. C. C. Krieger
USA, Massachusetts, Cambridge.
On grassy ground recently covered with street sweepings
[Spores] 7.5-8.8 x 12-16.7 microns
[Watercolor painting by L. C. C. Krieger of this specimen is available. High-resolution scan of the watercolor is available online at the U-M digital library, "University of Michigan Herbarium, Krieger's Watercolors of Fungi" (http://quod.lib.umich.edu/f/fuwatic?page=index) listed under "Pholiota dura"]