Irish lichens

Pertusaria flavicans

Order: Pertusariales       Family: Pertusariaceae

Species: Pertusaria flavicans

Growth type crustose.
Photos: On coastal rock. Zetland Pier, Co. Cork, SW Ireland.
Photographs confirmed by John Douglass.

Thick, smooth, warted or cracked-areolate thallus, yellow or yellowish-green. Numerous granular soralia, usually paler in colour than thallus. Apothecia rare, dark ostioles with thick margins.

Found on siliceous upland and coastal rocks.
Thallus: K-, C+ orange, KC+ orange, P-, UV + orange.
Soralia: C+ orange, UV+ bright orange


Pertusaria flavicans


Pertusaria flavicans


Pertusaria flavicans


Pertusaria flavicans
Pertusaria flavicans showing KC+ orange reation. September 2009

Please contact me if you find errors. All images used are copyright.