Order: Lecanorales       Family: Physciaceae Species: Hyperphyscia adglutinata Growth type foliose. Photos: On planted Malus. Macroom, Cork, SW Ireland. Small, adpressed, greenish-brown thallus that can coalesce to cover large areas. Lower surface white, few white rhizinae. Upper surface with yellowish-green soredia. Apothecia infrequent, discs brown with smooth, swollen margins. Microscope photo below. Becoming more frequent on dusty, nutrient-enriched shaded trees and rocks. In urban areas it is often found in the canine-zone at base of trees. Chemical reactions negative Similar: Phaeophyscia orbicularis. Black under-surface with black rhizines and protruding cilia.

Microscope photograph

Hyperphyscia adglutinata. October 2009. Fertile specimens: May 2010, 2012