This species is, in fact, part of Leratiomyces, though this name change awaits publication.

In the publication on Strohphariaceae by Noordeloos, he lakes a closer look again at the genera of Stropharia and Leratiomyces. In this work he has new descriptions of L. percevalii and L. magnivelaris, which people have equated with S. riparia in the past. Here he does not mention S. riparia at all, and separates the two Leratiomyces taxa on qualities of the veil. One can be left to assume that S. riparia should be considered a separate North American taxon, which should be moved to Leratiomyces at some point.