Order: Pertusariales       Family: Pertusariaceae Pertusaria leioplaca Growth type crustose. Photos: Macroom, Co. Cork and Killarney, Co. Kerry, SW Ireland. Thin grey-white to pale greenish-grey thallus containing clusters of coarse crystals. Margin +/- unzoned. Scattered flat-topped warts with spreading, +/- elliptical bases. Apothecia usually single with small pore-like discs. Pycnidia rare. Asci (3-)4(-6) spored, spores (40-)50-80(-120) x (20-)25-40(-50) µm. Micrographs below. K+ yellow, C-, KC+ yellow, P+/- orange-red, UV+/- pale orange Occurs throughout Ireland on sheltered, shaded, smooth-barked deciduous trees and shrubs. Similar: Pertusaria pertusa, 2-spored asci

Microscope photographs



Pertusaria leioplaca November 2009, February 2010 ans April 2012