Order: Lecanorales       Family: Ramalinaceae Species: Bacidina inundata (Bacidia inundata) Growth type crustose. Photos: On rocks in shaded streams. Ballingeary, Cork, SW Ireland Smooth or areolate greenish-grey or green-fawn, granular thallus surrounded by a prominent white prothallus. Small, flat, brown apothecia becoming convex and +/- contorted. Pycnidia are +/- immersed, either white or dark brown. The asci are 8-spored, spores 3-8 septate, 25-45 x 2-3 µm. Microscope photograph below. Chemical reactions negative. Occurs throughout Ireland on shaded acidic rocks in or beside clear, un-polluted streams, rivers and lakes.

Microscope photograph

Bacidia inundata. February 2009 and April 2012