Letharia is a genus of fruticose lichens belonging to the family Parmeliaceae.
[2] There were historically two species of Letharia: L. vulpina and L.
[3] Recent molecular sequence studies published in 2016 confirm at least 6 species in Western North America alone, with more expected to be confirmed using similar methods in other parts of the world.
[4] The typical photobiont is a green alga of genus Trebouxia.
This Parmeliaceae-related article is a stub.