Irish lichens

Caloplaca britannica

Order: Teloschistales       Family: Teloschistaceae

Species: Caloplaca britannica

Growth type crustose
Photos: On coastal rocks. Snave, Co. Cork, SW Ireland.

Thallus of very small pale yellow, radiating lobes covered with irregular, globular isidia. Apothecia common, pale orange with paler margins. Spores polarilocular, 11-14 x 4-6 Ám, septum 3.5 Ám wide

Probably very under-recorded on sheltered, siliceous coastal rocks, in cliff crevices and on bird-perching rocks. Chemistry K+ red

Similar: Caloplaca littorea (coastal) and C. arcis (churchyards)


Caloplaca britannica

Caloplaca britannica
Caloplaca britannica. September 2009

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