Irish lichens - Aspicilia cinerea agg

Order: Pertusariales Family: Megasporaceae

Species: Aspicilia cinerea agg.

Growth type crustose.
Photos: On coastal rock. Toormore, Cork, SW Ireland.
Identification needs confirming

Thallus is greyish or greenish-brown, often with a grey prothallus. Areoles cracked and warted. Immersed flat black apothecia with persistent margins. Soredia and isidia are absent.
K+ red, P+ orange

Probably an aggregate of species occuring on flat, nutrient-rich, well-lit siliceous rocks.

Aspicilia cinerea agg

Aspicilia cinerea agg. January 2009

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