| Usnea scabrida | |
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Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Parmeliaceae |
| Genus: | Usnea |
| Species: | U. scabrida |
| Binomial name | |
| Usnea scabrida Taylor (1844) | |
Usnea scabrida is a foliose lichen that grows from holdfasts on trees. [1] [2] It occurs in southwest Western Australia. [3] It is a very pale grayish-yellowish green, slender, pendant, branching from the base, unequally branching, and shrubby. [3] The cortex contains usnic acid, and the medulla contains scabrosins. [4] The lichen was described as a new species in 1844 by English botanist Thomas Taylor. [5]
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Usnea scabrida is endemic to Western Australia, South Australia, New South Wales and Victoria, but is also found outside Australia, [4] and in Queensland. [6] A subspecies Usnea scabrida subsp. elegans is found in eastern Australia. [7]