Irish lichens
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Order: Ostropales
Family: Phlyctidaceae
Species: Phlyctis agelaea Photos: Bantry and Dromore, Co. Cork, SW Ireland. Thin, powdery to rough, cracked thallus, whitish to pale-grey with a white prothallus. Usually fertile, with greyish, white-pruinose apothecia +/- deeply hidden in powdery-granular warts. Asci usually 2-spored, with muriform spores. Soralia absent. Micrographs below. Thallus K+ yellow going red, C-, KC+ red, P+ orange, UV- Infrequent but possibly overlooked on the trunks and branches of young smooth-barked trees in moist habitats. Rare on rocks. Similar: Phlyctis argena. Thallus sorediate, apothecia rare. Pertusaria multipuncta. Discs more exposed, thallus K+ yellow |
