Order: Lecanorales       Family: Physciaceae Species: Physcia leptalea Growth type foliose. Photos: On coastal Hawthorn twig. Ballyrisode, Cork, SW Ireland. Light-grey thallus with long, narrow lobes, pseudocyphellate and with prominent cilia. White undersurface with some scattered rhizines. Usually very fertile, dark apothecia with thick, swollen margins, discs often +/- pruinose. Soredia absent. Often coastal, also found inland in Ireland on well-lit basic-barked and nutrient-rich twigs and branches. Cortex: K+ yellow Similar: P. tenella and P. adscendens. Sorediate.

     



Physcia leptalea on coastal Hawthorn. January 2009