Irish lichens

Sticta sylvatica
Order: Peltigerales       Family: Lobariaceae

Species: Sticta sylvatica

Growth type foliose. Identified by Andy Acton
Photos: Among moss on wall. Ardnagashel, Cork, SW Ireland.

Multi-lobed thallus, the dark brown lobes with greyish patches and faintly reticulated ridges. Margins ascending, deeply incised. Lower surface dark brown, buff at margins with pale cyphellae. Darker brown isidia form on lobe surfaces and ridges. Apothecia unknown. Thallus smells of fish when wet.

On mossy trees and rocks in damp, undisturbed wooodland. Most frequently recorded from SW Ireland. Chemical reactions negative.

Similar: Sticta fuliginosa and Sticta dufourii

Sticta sylvatica

Sticta sylvatica

Sticta sylvatica
Sticta sylvatica. Ardnagashel, Co.Cork. March 2010

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