Aspicilia cinerea

Aspicilia cinerea
Aspicilia cinerea
Scientific classification
Domain:	Eukaryota
Kingdom:	Fungi
Division:	Ascomycota
Class:	Lecanoromycetes
Order:	Pertusariales
Family:	Megasporaceae
Genus:	Aspicilia
Species:	A. cinerea
Binomial name
Aspicilia cinerea (L.) Körb. (1855)
Synonyms
Lichen cinereus L. (1767)

Aspicilia cinerea (cinder lichen) is a gray to almost white, 1.5–15 cm (0.59–5.91 in) wide, crustose areolate lichen with large apothecia that mostly grows on rock in the mountains.^{[1][2]: 224} It grows in variable forms, from having a continuous surface to being areolate.^[2]: 224 It grows in Eurasia, and North America on siliceous rock, schist or igneous rock in habitats exposed to sunlight, also rarely on calciferous rock.^[1] It is common in Arizona, and rare in California and Baja California at elevations of 1,700 to 3,300 metres (5,600 to 10,800 ft).^[1]

Flat to almost convex areoles are angular to irregular, and 0.2–2 mm in diameter.^[1] They are contiguous but clearly separated by well defined cracks.^[1] It usually lacks a prothallus.^[1] It may be rimose toward the outer edges.^[1] Each areole has 1–10, round to angular or irregular, 0.1–1.6 mm apothecia that may be confluent when numerous.^[1] Apothecia have usually black concave discs, with exciple margins of thallus tissue.^[1] Asci are club shaped (clavate), with 8 ellipsoid ascospores.^[1]

Lichen spot tests on the cortex and medulla are K+ red, KC−, P+ yellow^[2]: 224 or P+ orange,^[1] with the medulla sometimes testing K+ yellow and P+ orange.^[2]: 224 Secondary metabolites include norstictic acid and often connorstictic acid in traces, and more rarely hyposalazinic acid.^[1]

The photobiont is a chlorococcoid.^[1]

References

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This page was last edited on 31 August 2023, at 20:55