Order: Gyalectales       Family: Gyalectaceae Species: Gyalecta jenensis Growth type crustose. Photos: On limestone. Black Head, the Burren, W Ireland. BLS Burren meeting 2009 Thin light-grey thallus, often pink-tinged. Distinctive pale orange apothecia with thick notched margins are initially spherical. The asci are 8-spored and the spores are hyaline, 3-septate to muriform when mature, with 3-6 transverse septa and 1-2 longitudinal septa, (11-)15-25(-40) x 6-10(-16) µm. Found on damp, shaded limestone, also on old church walls. Chemical reactions negative. Similar: Gyalecta truncigena, found on basic-barked trees.

Gyalecta jenensis. BLS Burren meeting, April 2009