Irish lichens
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Order: Teloschistales Family: Teloschistaceae
Species: Caloplaca marmorata (Caloplaca lactea) UK photographs. Identified by Brian Coppins Thin white or inconconspicuous thallus without a distinct prothallus. Apothecia are plane or concave when young, sometimes leaving shallow pits in substrate. Discs bright orange-yellow becoming paler and translucent when wet. Margins are swollen and sometimes elevated. Spores 11-14 x 6-8.5, the septum narrow and less than 1/8 spore length. Thallus K-, apothecia K+ red-purple. Pioneer species on dry limestone fragments, also found on sea shells and pebbles. Infrequently recorded in Ireland, most records are from the Burren, Co. Clare. |
Caloplaca lactea February 2010