Irish lichens
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Order: Lecanorales Family: Catillariaceae
Species: Catillaria chalybeia Photos: On stone path. Gougane Barra, Cork, SW Ireland. Identified by John Douglass Very variable. Thin smooth to cracked-areolate, grey, greenish or grey-black thallus, often with black prothallus. Apothecia flat or +/- convex, black with thin margins sometimes paler than discs. Common on nutrient-enriched siliceous rocks and walls. Occasional on timber and tree trunks. Chemical reactions negative. C. chalybeia var. chloropoliza has paler grey to dark-brown apothecia, hymenium without green pigment. Scarce, schistose rocks in or by rivers and lakes, Connemara and N Ireland. |
Catillaria chalybeia. August 2009