Irish lichens

Pertusaria albescens var corallina

Order: Pertusariales       Family: Pertusariaceae

Species: Pertusaria albescens var. corallina

Growth type crustose.
Photos: On tree trunk. Gougane Barra, Cork, SW Ireland.
Identified by John Douglass

Differs from Pertusaria albescens in having coarse knotted, warted or granular soralia and a thickened thallus.

Found over-growing moss on bark and sheltered stones.
Chemical reactions negative. Taste-test for oxalic acid negative.

Similar: Pertusaria polythecia. Pale grey thallus comprised of fertile warts. Rare, endemic to SW Ireland on mosses on trees.


Pertusaria albescens var corallina


Pertusaria albescens var corallina


Pertusaria albescens var corallina


Pertusaria albescens var corallina
Immediately above: Pertusaria albescens var. corallina on Hawthorn twig. November 2009

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