Henningsomyces is a genus of fungi in the family Marasmiaceae.

Based on the small, tubular structure of its sporulating body it is called a cyphelloid fungi.

The genus name of Grovesia is in honour of Paul Christoph Hennings (1841–1908), who was a German mycologist and herbarium curator.

[2] The genus was circumscribed by Carl Ernst Otto Kuntze in Revis.

As of June 2015[update], Index Fungorum lists 10 species in Henningsomyces:[3]