Irish lichens

Mycoblastus caesius

Order: Lecanorales       Family: Mycoblastaceae

Species: Mycoblastus caesius

Growth type crustose.
Photos: Glengarriff woods, Co. Cork, SW Ireland.
Identified by Andy Acton

Thin bluish-grey thallus, usually with a darker blue-grey prothallus. Numerous whitish to pale bluish-grey soralia with deeper blue flecks, discrete but can become confluent. Apothecia and pycnidia are unknown. Chemical reactions negative, UV+ white.

Found on rough or smooth acidic bark in old, established woodlands, occasional on shaded siliceous rocks.

Similar: Buellia griseovirens


Mycoblastus caesius


Mycoblastus caesius
Mycoblastus caesius March 2010

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