Irish lichens
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Order: Acarosporales Family: Acarosporaceae
Species: Acarospora smaragdula Photos: on upland rock. Ballingeary area, Co. Cork, SW Ireland. Variable. Thallus usually pale creamy brown but yellowish-green on copper-rich rocks. Scattered flat to convex areoles that can form continuous crust. Usually 3-7 minute apothecia in each areole, red-brown to blackish, margins absent or well developed. Occurs on sheltered slightly base-rich siliceous rocks, sites rich in heavy metals and on sheltered stones below metal run-off. K+ red, C-, KC+ red, P+ yellow. Rarely K- or KC-. Similar: A. fuscata. Brownish areoles, K-, C+ red, KC+ red |
Acarospora smaragdula. November 2009