Arctoparmelia separata, commonly known as the rippled ring lichen,[1] is a species of foliose, ring lichen in the family Parmeliaceae with a roughly circumpolar distribution.
| Arctoparmelia separata | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Parmeliaceae |
| Genus: | Arctoparmelia |
| Species: | A. separata
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| Binomial name | |
| Arctoparmelia separata | |
| Synonyms | |
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Taxonomy
editThe lichen was first described scientifically by Theodor Magnus Fries in 1879 as a species of Parmelia.[2] Mason Hale transferred it to Xanthoparmelia in 1974.[3] In 1986, Hale segregated five Xanthoparmelia species to the newly created genus Arctoparmelia in 1986. This group of species, including X. separata, is characterized by the velvety, ivory-white to purplish colour of the lower surface of the thallus, the presence of alectoronic acid, and a geographical range restricted to arctic or boreal locations.[4] Arctoparmelia separata is commonly known as the rippled ring lichen.[5]
Description
editArctoparmelia separata resembles the more common Arctoparmelia centrifuga, but is distinguished from that species by the dull mouse-grey colour of its lower surface, and its thicker and more rigid thallus,[5] and its long lobes that are divaricately branched. The lichen has an incompletely circumpolar distribution. It has been recorded from northern North America,[5] Greenland,[6] and Japan, and Siberia west to Novaya Zemlya.[4] It has not been recorded in continental Europe.[7]
References
edit- ^ "Standardized Common Names for Wild Species in Canada". National General Status Working Group. 2020.
- ^ Fries, Theodor M. (1879). "On the lichens collected during the English Polar Expedition of 1875–76". Botanical Journal of the Linnean Society. 17 (102): 353. doi:10.1111/j.1095-8339.1879.tb00444.x.
- ^ Hale, M.E. (1974). "Bulbothrix, Parmelina, Relicina and Xanthoparmelia, four new genera in the Parmeliaceae". Phytologia. 28 (5): 479–490.
- ^ a b Hale, Mason E. (1986). "Arctoparmelia, a new lichen genus in the Parmeliaceae". Mycotaxon. 25 (1): 251–254.
- ^ a b c Brodo, Irwin M.; Sharnoff, Sylvia Duran; Sharnoff, Stephen (2001). Lichens of North America. Yale University Press. p. 147. ISBN 978-0300082494.
- ^ Hansen, Eric S. (2000). "A contribution to the lichen flora of the Kangerlussuaq area, West Greenland". Cryptogamie, Mycologie. 21 (1): 53–59. doi:10.1016/S0181-1584(00)00104-4.
- ^ Vitikainen, O.; Dudoreva, T. (2003). "Arctoparmelia subcentrifuga new to Europe". Graphis Scripta. 14.