''Xanthoria'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

of lichenized

fungi A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from ...

in the family

Teloschistaceae The Teloschistaceae are a large family of mostly lichen-forming fungi belonging to the class Lecanoromycetes in the division Ascomycota. The family, estimated to contain over 1800 species, was extensively revised in 2013, including the creati ...

. Common names include orange lichen,''Xanthoria''.
USDA PLANTS. orange wall lichen,Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, and sunburst lichen. They can be identified by their characteristic

squamulose A squamulose lichen is a lichen that is composed of small, often overlapping "scales" called squamules. If they are raised from the substrate and appear leafy, the lichen may appear to be a foliose lichen, but the underside does not have a "ski ...

morphology with distinctive "fairy cups".

Species

*'' Xanthoria aureola'' *'' Xanthoria calcicola'' *'' Xanthoria ectaneoides'' *'' Xanthoria elegans'' – elegant orange wall lichen, elegant sunburst lichen *'' Xanthoria juniperina'' *'' Xanthoria kangarooensis'' *'' Xanthoria lapalmaensis'' *''

Xanthoria parietina ''Xanthoria parietina'' is a foliose lichen in the family Teloschistaceae. It has wide distribution, and many common names such as common orange lichen, yellow scale, maritime sunburst lichen and shore lichen. It can be found near the shore on ...

'' – common orange lichen, yellow scale, maritime sunburst lichen, shore lichen *'' Xanthoria schummii'' *'' Xanthoria splendidula'' *'' Xanthoria ulophyllodes'' – powdery sunburst lichenWaleski Joe (2007). ''Lichens of the North Woods'' Duluth, MN: Kollath+Stensaas *'' Xanthoria whinrayi'' *'' Xanthoria yorkensis'' The

taxa In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular nam ...

''Xanthoria coomae'' and ''Xanthoria polessica'' were determined to be the same species as ''X. parietina'' in a 2020 publication.

References

Teloschistales Lichen genera Teloschistales genera Taxa described in 1825 Taxa named by Elias Magnus Fries {{Teloschistales-stub