Order: Lecanorales       Family: Physciaceae Species: Rinodina oleae (R. gennarii) Growth type crustose Photos: On estuary post. Co.Waterford, Ireland. Greyish or grey-green thallus, sometimes +/- absent. Abundant apothecia, discs brown-black with thick margins. Spores brown, 1-septate, 13-16 x 7-10 µm. Microscope photographs below. Pollution tolerant, common on basic or nutrient-rich rocks, walls, concrete, bark and wood. Similar: Rinodina roboris is K+ yellow, occurs on well-lit bark. Lecania erysibe has narrower, colourless spores.

Microscope photographs



Rinodina oleae. April 2012