Tasmidella is a lichen genus in the family Megalariaceae. Described by Gintaras Kantvilas, Josef Hafellner, and John Elix in 1999, it contains the single species Tasmidella variabilis, found in Tasmania. It is distinguished from the closely related Megalaria by having simple spores with a layered wall.
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