under log, lakeside
Similar to this one http://www.inaturalist.org/observations/647792
On a galax leaf in pine-oak forest with heath understory.
This fungus has parasitized the pupa of a sphinx moth.
The Cordycipitaceae are a family of parasitic fungi in the Ascomycota, class Sordariomycetes. The family was first published in 1969 by mycologist Hanns Kreisel, but the naming was invalid according to the code of International Code of Nomenclature for algae, fungi, and plants. It was validly published in 2007.