Irish lichens

Arthrorhaphis citrinella

Order: Incertae sedis       Family: Arthrorhaphidaceae

Species: Arthrorhaphis citrinella

Growth type crustose, granular.
Photos: On upland rock. Gougane Barra, Co. Cork, SW Ireland.
Specimen identified by John Douglass

Thallus forms small, scattered clumps of green to yellowish, fragile granules which soon become sorediate. Apothecia are rare, dark green or black, and pycnidia are unknown.
UV+ orange

Found on mosses and soil in crevices on +/- vertical rock faces of siliceous upland rocks. Scattered distribution throughout Ireland.

Arthrorhaphis citrinella

Arthrorhaphis citrinella

Arthrorhaphis citrinella
Arthrorhaphis citrinella. Gougane Barra, Co. Cork. September 2009

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