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Usnea is a genus of fruticose lichens in the large family Parmeliaceae. The genus, which currently contains roughly 130 species, was established by Michel Adanson in 1763. Species in the genus grow like leafless mini- shrubs or tassels anchored on bark or twigs.
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]
Growing on a conifer in the hills north of Mount St. Helens, showing the leaf-like side-branches and pendent "stems", some of them several metres long. Dolichousnea longissima (syn. Usnea longissima), [2] [3] commonly known by the names old man's beard or Methuselah's beard lichen, is a fruticose lichen in the family Parmeliaceae.
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 ]
This is a list of common names of lichen genera. When a common name for a lichen genus is the same as the scientific name for that genus, it is not included in the following list. This list only includes genera common names that are widely used, as indicated by the common name either appearing in a peer reviewed scientific publication or in a ...
Usnea glabrata is a species of beard lichen in the family Parmeliaceae. It was first described as a variety of Usnea plicata by Erik Acharius. Finnish lichenologist Edvard August Vainio transferred it to the genus Usnea in 1915. [2] The lichen grows on bark and is widespread throughout Europe, although it is probably locally extinct in a few
One of the most potent lichen antibiotics is usnic acid, as a result Usnea spp. are commonly used in traditional medicines. Usnea was used in the United States as a fungal remedy of the mouth, stomach, intestines, anus, vagina, nose, ear, and skin, and in Finland it was used to treat wounds, skin eruptions, and athlete's foot. [5]
Usnea glabrescens is a species of beard lichen in the family Parmeliaceae. It grows on bark, has a shrubby thallus with a blackened base, and a thick cortex. Several chemotypes of this species have been reported. The lichen is widely distributed in Europe. [2]