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This is a list of species in the fruticose lichen genus Usnea, commonly known as "beard lichens". As of March 2025, Species Fungorum (in the Catalogue of Life) accepts 128 species of Usnea, although many more have been described throughout the genus's extensive taxonomic history. The fungal nomenclatural authority Index Fungorum lists nearly 2,000 taxa that have ever been associated with the ...
Specifically, scalp fungal infections are often caused by fungi in the microsporum and trichophyton genera. Scalp fungus can cause a variety of symptoms, including: Dry, scaly skin. Redness ...
The Parmeliaceae is a large and diverse family of Lecanoromycetes.With over 2700 species [2] in 71 genera, it is the largest family of lichen-forming fungi.The most speciose genera in the family are the well-known groups: Xanthoparmelia (822 species), Usnea (355 species), Parmotrema (255 species), and Hypotrachyna (262 species).
Other symptoms to note: This rash is itchy and can cause hair loss when it occurs on the scalp. The same fungus can also cause athlete’s foot and jock itch. The same fungus can also cause ...
Usnea hirta is a species of beard lichen in the family Parmeliaceae. It was one of 80 lichen species first formally described by Carl Linnaeus in his 1753 work Species Plantarum . Friedrich Heinrich Wiggers transferred it to the genus Usnea in 1780. [ 2 ]
Usnea florida is a species of beard lichen in the family Parmeliaceae. It was first described by Carl Linnaeus in his 1753 work Species Plantarum. German botanist Friedrich Heinrich Wiggers transferred it to the genus Usnea in 1780. It is considered a threatened or vulnerable species in several European countries. [2]
Usnea can be distinguished from similar-looking fruticose lichen genera such as Evernia and Ramalina by several key features. While these other genera also grow as gray-green or yellow-green tufts on trees, they typically have flatter, less extensively branched thalli and lack the distinctive elastic, cartilaginous central axis that ...
Usnea is a species of beard lichen in the family Parmeliaceae. It was described as a new species in 1925 by Finnish lichenologist Edvard August Vainio. The lichen has a richly branched thallus, and the branches have depressions and foveolae. It is widely distributed in Europe. [1]