Irish lichens

Lecanora poliophaea

Order: Lecanorales       Family: Lecanoraceae

Species: Lecanora poliophaea

Growth type crustose
Photos: On estuary rocks. Co.Waterford, Ireland.
Chemical reactions negative. UV+ yellow (young apothecia)

The bluish-grey, granular-aureolate thallus with nodules and coarse isidia is usually surrounded by a zoned, fimbriate prothallus. Apothecia are immersed becoming sessile, discs orange-brown with crenulate margins. Microscope photograph below.

Found on nutrient-enriched coastal rocks, usually lower down on the shore than L. praepostera (which is K+ yellow > red)

Lecanora poliophaea

Lecanora poliophaea

Lecanora poliophaea, microscope photograph
Lecanora poliophaea
Lecanora poliophaea. April 2012

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