Punctelia appalachensis

Punctelia appalachensis
	A wet specimen found in Pisgah National Forest, North Carolina
Scientific classification
Kingdom:	Fungi
Division:	Ascomycota
Class:	Lecanoromycetes
Order:	Lecanorales
Family:	Parmeliaceae
Genus:	Punctelia
Species:	P. appalachensis
Binomial name
	Punctelia appalachensis; (W.L.Culb.) Krog (1982)
Synonyms
	Parmelia appalachensis W.L.Culb. (1962);

Punctelia appalachensis, commonly known as the Appalachian speckled shield lichen,^[1] is a species of foliose lichen in the family Parmeliaceae. It is found in the eastern United States^[1] and eastern Canada.^[2] The lichen was first formally described in 1962 by lichenologist William Culberson as a species of Parmelia. He collected the type specimen growing on tree bark in West Virginia,^[3] Hildur Krog transferred it to the newly circumscribed genus Punctelia in 1982.^[4]

The thallus of Punctelia appalachensis is shiny and greenish-gray (drier individuals are bluish-grey);^[5] the surface is covered with maculae (spots or blotches) and pseudocyphellae. The underside of the thallus is black, at least in the center, with pale brown edges.^[1] Its dark underside allows it to be readily distinguished from other morphologically similar species in its range, such as Punctelia rudecta or P. caseana.^[5] The lichen usually grows on the bark of trees, but is sometimes found growing on rock.^[1]

References[]

^ ^a ^b ^c ^d Brodo, Irwin M.; Sharnoff, Sylvia Duran; Sharnoff, Stephen (2001). Lichens of North America. Yale University Press. p. 606. ISBN 978-0300082494.
^ Anderson, Francis (2014). Macrolichens of Nova Scotia: a provisional checklist, Curatorial Report Number 101 (Report). Halifax: Nova Scotia Museum. ISBN 978-1-55457-552-7.
^ Culberson, W.L. (1962). "Some pseudocyphellate Parmeliae". Nova Hedwigia. 4 (3–4): 563–577.
^ Krog, Hildur (1982). "Punctelia, a new lichen genus in the Parmeliaceae". Nordic Journal of Botany. 2 (3): 287–292. doi:10.1111/j.1756-1051.1982.tb01191.x.
^ ^a ^b Tripp, Erin A.; Lendemer, James C. (2020). Field Guide to the Lichens of Great Smoky Mountains National Park. Knoxville: The University of Tennessee Press. p. 388. ISBN 978-1-62190-514-1.

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[Brodo_et_al._2001-1] Brodo, Irwin M.; Sharnoff, Sylvia Duran; Sharnoff, Stephen (2001). Lichens of North America. Yale University Press. p. 606. ISBN 978-0300082494.

[Anderson_2014-2] Anderson, Francis (2014). Macrolichens of Nova Scotia: a provisional checklist, Curatorial Report Number 101 (Report). Halifax: Nova Scotia Museum. ISBN 978-1-55457-552-7.

[Culberson_1962-3] Culberson, W.L. (1962). "Some pseudocyphellate Parmeliae". Nova Hedwigia. 4 (3–4): 563–577.

[Krog_1982-4] Krog, Hildur (1982). "Punctelia, a new lichen genus in the Parmeliaceae". Nordic Journal of Botany. 2 (3): 287–292. doi:10.1111/j.1756-1051.1982.tb01191.x.

[Tripp_&_Lendemer_2020-5] Tripp, Erin A.; Lendemer, James C. (2020). Field Guide to the Lichens of Great Smoky Mountains National Park. Knoxville: The University of Tennessee Press. p. 388. ISBN 978-1-62190-514-1.

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