Cleistocybe is a genus of fungi in the order Agaricales. It is incertae sedis with respect to familial placement within the order. The genus was circumscribed in 2007, and contains three species.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0