Order: Lecanorales       Family: Physciaceae Species: Rinodina sophodes Growth type crustose. Photos: Gougane Barra, Co. Cork and Kilcolman, Co. Limerick, Ireland Pale grey to olive-brown thallus forming small, irregularly cracked patches, usually with a dark prothallus. Apothecia are immersed, sometimes becoming sessile. Discs dark-brown to black, remaining flat with thick white margins. Asci are 8-spored, the spores green becoming brown, 1-septate, 13-19 x 6-9 µm. Micrographs below. Usually occurs near leaf and girdle scars on smooth-barked twigs, often associated with Ash. Widespread, but most frequent in upland and exposed areas. Chemical reactions negative. Similar: Rinodina roboris on bark and Rinodina olea (usually on rock and man-made substrates but also ocurs on wood and bark)

Microscope photographs



Rinodina sophodes. January 2012and August 2024