Irish lichens

Lecanora actophila
Order: Lecanorales       Family: Lecanoraceae

Species: Myriolecis actophila (Lecanora actophila)

Growth type crustose.
Photos: On coastal rocks near Toormore, Cork, SW Ireland.

Creamy-white to yellowish grey-green smooth, cracked or areolate thallus, often with whitish prothallus. Small greenish-black, sessile apothecia become bluish when wet. Entire, paler margins become contorted but not excluded or crenulate. The spores are simple, ellipsoid and sometimes guttulate, 8-14 x 5-6 Ám.
K-, C-, KC+ weak yellow, P-, UV+ pale pink

Coastal, common on siliceous rocks in 'grey zone' above HWM.

Similar: Lecanora helicopsis. Greyer thallus, discs brown.

Lecanora actophila       Lecanora actophila

Lecanora actophila
Lecanora actophila. On coastal rock, Toormore, Co.Cork. February 2009

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