Correct name is “Galerina vittiformis (Fr.) Earle” according to Index Fungorum.

Well, all the sources I have site this one as “Galerina vittiformis (Fr.) Singer”, although Earle did define the genus of Galerina, and defined the type species as Galerina vittaeformis. The name with Singer is for the Galerina vittaeformis var. vittaeformis maybe? And now since I might have a f. tetraspora obs, maybe this name should be deprecated in favor of splitting into the vars. and forms… but I can’t bring myself to do that yet. (I just find “Galerina vittaeformis var. vittaeformis f. vittaeformis (Fr.) Singer” a little too much…)