Irish lichens - Caloplaca teicholyta

Order: Teloschistales Family: Teloschistaceae

Species: Caloplaca teicholyta

Growth type crustose, +/- placodioid at margins.
Photos: On limestone rock. Teampall Chronain, the Burren, Ireland
BLS Burren meeting 2009

Scurfy, thick or thin, whitish-grey thallus, closely adpressed, margins +/- placodioid. Centre becoming +/- sorediate. Usually sterile, when present discs are bright orange, sometimes pruinose.

Found on calcareous stone, mortar and limestone, usually on buildings, walls and monuments. Rare in Ireland with few, scattered records. Thallus K-, apothecia K+ purple-red

Host to the lichenicolous fungus Diplotomma murorum.

Caloplaca teicholyta. April 2009

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