Parmotrema is a genus of lichen belonging to the family Parmeliaceae. The genus was circumscribed by Italian lichenologist Abramo Bartolommeo Massalongo in 1860. Members of the genus are commonly called ruffle lichens or scatter-rag lichens.
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