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This is a grey-coloured, black-fruited, crustose Caloplaca of hard limestone surfaces. The immersed, grey scurfy thallus is limited by a line of black prothallus. Discs are numerous, in sunken depressions and often thinly frosted, so that they can be easily mistaken for common lichens such as Sarcogyne regularis. Under the microscope the narrow spore septum separates it from similar, dark-fruited members of the genus such as C. variabilis. In Ireland, it is known from the Arran Islands.
Original text submitted by Vince J. Giavarini
|Simms, M. J., (2016). Caloplaca alociza (A.Massal.) Mig.. [In] LichenIreland. |
http://www.habitas.org.uk/lichenireland/species.asp?item=20511 Accessed on 2017-01-24.