Irish lichens

Opegrapha rupestris

Order: Arthoniales       Family: Roccellaceae

Species: Opegrapha rupestris
Scribble lichen

Growth type crustose. Parasitic.
Photos: Parasitic on Verrucaria. Black Head, the Burren, Ireland.
BLS Burren meeting 2009

Thallus barely visible. Scattered clusters of small lirellae, +/- rounded with persistently narrow central slit. Spores 3-septate.

Occurs as a parasite on crustose Verrucariaceae on natural limestone and memorials, especially Verrucaria baldensis. Recorded from northern and western Ireland.

Opegrapha rupestris

Opegrapha rupestris
Opegrapha rupestris. BLS Burren meeting, April 2009

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