Irish lichens

Acrocordia salweyi
Family: Monoblastiaceae

Species: Acrocordia salweyi

Growth type crustose.
Photos: On limestone. Black Head, the Burren, Ireland.
BLS meeting April 2009

Smooth or granular, thin, immersed, whitish to pale brown-grey thallus. The large, +/- flat-topped perithecia with a thick involucrellum are one quarter to half immersed. Spores 1-septate, 20-35 x 10-15 Ám. Chemical reactions negative.

Occurs on soft, damp calcareous rocks and old mortar.

Similar: A. conoidea. Thallus pinkish. Found on hard limestone.

Acrocordia salweyi
Acrocordia salweyi. Black Head, the Burren. April 2009

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