Myriospora dilatata has areoles with a single large apothecium and is reddish to orange in color. The cortex is covered in microscopic sections with a thick layer of reddish or orange crystals. It occurs in Europe and North America at a variety of elevations usually on siliceous rock rich in iron or sometimes copper. It is rare in the Czech Republic and was only collected in the Krkonoše Mountains growing on a mica schist outcrop enriched with heavy metals (copper ores and arsenopyrite) under Mt Sněžka in a relatively moist habitat with abandoned mining pits at 1075 m.
Literature: Knudsen K., Kocourková J. & Schiefelbein U. (2017): New reports of Myriospora (Acarosporaceae) from Europe. – Mycotaxon 132: 857–865.taxonomic classification:
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