Protousnea
Protousnea
Genus of lichens in the family Parmeliaceae
Protousnea is a genus of lichenised ascomycetes in the large family Parmeliaceae. It contains two accepted species. Protousnea species have a fruticose growth form, similar to beard lichens (genus Usnea). The genus is endemic to southern South America.[2] The genus was circumscribed in 1976 by Hildur Krog as a segregate genus from Usnea.[3]