Irish lichens

Order: Lecanorales       Family: Psoraceae

Species: Protoblastenia incrustans

Growth type crustose
Photos: On limestone wall. Temple Cronan, the Burren, Ireland
BLS Burren meeting 2009

Very thin pale yellowish-grey thallus, often immersed. Very small (<0.5mm) pale yellow-orange, flat or slightly convex apothecia occur in deep pits in substrate.

Found on natural hard limestone, usually in upland areas.
Apothecia K+ crimson


Protoblastenia incrustans
Protoblastenia incrustans. April 2009

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