Lobothallia alphoplaca
Lobothallia alphoplaca (variable sunken disk lichen) is a creamy gray to brown,[2]:307 placoidioid areolate lichen that grows on rock in on rock and sometimes moss.[3] It prefers growing on siliceous rocks.[3] It is found in Europe, central Asia, and North America, where it grows in the southwestern deserts to central California.[3] The center has numerous crowded and deformed apothecia with rims of thallus-like tissue (lecanorine).[3] With dark reddish or grayish brown to black discs.[3] Lichen spot tests on the thallus and apothecia are C-, and KC-, with tests on the cortex K+ red, P+ orange, or K-, P- and on the medulla K+ red, and P+ orange.[3] It produces norstictic acid, constictic acid, or salazinic acid as secondary metabolites.[3]
Lobothallia alphoplaca | |
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Species: | L. alphoplaca |
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Lobothallia alphoplaca | |
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References
- "Synonymy: Lobothallia alphoplaca (Wahlenb.) Hafellner". Species Fungorum. CAB International. Retrieved 2014-11-01.
- Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN 978-0-300-19500-2
- Lichen Flora of the Greater Sonoran Desert Region. Vol 2, Nash, T.H., Ryan, B.D., Gries, C., Bugartz, F., (eds.) 2001,