Caloplaca oasis Teloschistaceae
Caloplaca oasis

Growth type crustose
Chemical results: Thallus K-, apothecia K+ red

Occurs on basic substrates; limestone, mortar and concrete. Rarely parasitic on Verrucaria species

Abundant and crowded small (0.2-0.4mm) orange or dark orange apothecia with very narrow margins. Thallus is thin and yellowish or +/- inconspicuous.

Similar: C. holocarpa agg. On siliceous rocks, sometimes on wood


Caloplaca oasis


Caloplaca oasis


Caloplaca oasis


Caloplaca oasis
Caloplaca oasis
Studland churchyard, Dorset. October 2012. On cockle shell, Hampshire, November 2013

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