Irish lichens
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Order: Peltigerales
Family: Lobariaceae
Species: Sticta dufourii / Sticta canariensis (dufourii) Growth type foliose. Identified by Andy ActonPhotos: At base of mature Oak. Glengarrif woods. Cork, SW Ireland Blue-green cyanobacterial morph. Overlapping thin, wrinkled lobes to 2cm diameter, pale grey-brown when dry, darker brown when wet, sometimes white-marbled. Lower surface pale brownish-white, finely white-tomentose, +/- ridged, with scattered cyphellae. Margins are irregularly incised with small flattened isidia or lobules. Apothecia are unknown. Both the blue-green and the green morph can occur within the same thallus. Mainly western Ireland on damp, sheltered mossy trees and rocks. Chemical reactions negative. Thallus smells of fish when wet. Similar: Can be confused with Sticta sylvatica. The green morph is Sticta canariensis sens str. with bright green lobes |
Sticta dufourii. March 2010