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At first glance this species may appear to be C. citrina, but a quick look through a lens will confirm that the thallus is non-sorediate and arranged like miniature granular rosettes, lobed at the edges. It is known only from south Kerry, but is probably more widespread.
Original text submitted by Vince J. Giavarini
|Simms, M. J., (2016). Caloplaca arcis (Poelt & Vezda) Arup . [In] LichenIreland. |
http://www.habitas.org.uk/lichenireland/species.asp?item=500017 Accessed on 2017-01-17.