Protousnea is a genus of lichenised ascomycetes in the large family Parmeliaceae. It is a genus of eight currently accepted species. Protousnea species have a fruticose growth form. The genus is endemic to southern South America.
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