| Usnea hirta | |
|---|---|
| | |
| In Vyšné Ružbachy, Slovakia | |
| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Parmeliaceae |
| Genus: | Usnea |
| Species: | U. hirta |
| Binomial name | |
| Usnea hirta | |
| Synonyms [1] | |
List
| |
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] The lichen is sensitive to air pollution, and is often used as a biomonitor of sulphur dioxide. [3] Usnea hirta has an extensive worldwide distribution, and it is morphologically variable, which has led to numerous intraspecific taxa (i.e. subspecies, varieties, and forms) being proposed in its taxonomic history. [4]