Order: Lecanorales       Family: Physciaceae Species: Physcia aipolia Growth type foliose. Photos: On deciduous twigs. Ballingeary, Cork, SW Ireland. Whitish or pale bluish-grey thallus to 6cm diameter. Very distinct pale pseudocyphellae on lobes. Dark rhizines on under-surface. Abundant dark-brown or black, +/- pruinose apothecia. Asci are 8-spored, spores 1-septate, brown, thick-walled. 18-24 x 7-10 µm. Microscope photographs below. Occurs on well-lit, nutrient-rich trees, often in the nodes of twigs and branches. Cortex and medulla: K+ yellow Parasitised by Nectriopsis physciicola. Similar: Physcia stellaris. Medulla: K-

Microscope photographs





Physcia aipolia