Parasola leiocephala  (P.D. Orton) Redhead, Vilgalys & Hopple (2001)

This small inky cap is very similar to the much better known Parasola plicatilis, but differs in having a very distinctive spore shape -- somewhat angular and heart shaped. Here we follow Kees Uljee's interpretation

Spores: 9.5-12 x 9-10.2