Lachnum is a genus of fungi in the family Hyaloscyphaceae. The genus contains about 251 species. It was circumscribed by Swedish botanist Anders Jahan Retzius in 1795.
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