Synonyms: Mollisia minutella, Niptera cinerea, Octospora cinerea, Octospora pallida, Peziza alni, Peziza callosa, Peziza cinerea, Peziza grisea, Peziza viridis, Trochila cinerea.
Common name: common grey disco.
Russian name: Molliziya pepelno-seraya.
Mollisia cinerea is a species of fungus that belongs to the family Dermateaceae. It is characterized by its small, greyish-white to pale brown apothecia with a hairy exterior. In St. Petersburg and Leningrad Oblast, Mollisia cinerea has been found growing on decaying wood, particularly on coniferous trees such as spruce and fir. In north-western Russia, the fungus is widely distributed and can be found in various habitats, including forests, bogs, and along riverbanks, typically fruiting from summer to autumn.
Tall brown sporangia of slime mold Stemonitis fusca on a log with tiny grey cups of common grey disco fungus (Mollisia cinerea) in Lembolovo, 40 miles north from Saint Petersburg. Russia, July 5, 2017
Unnamed Road, Leningradskaya oblast', Russia, 188695
Common grey disco fungus (Mollisia cinerea) in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 12, 2017Unnamed Road, Kannelyarvi, Leningradskaya oblast', Russia, 188850In Leningrad Oblast and north-western Russia, Mollisia cinerea has been observed growing on logs and other substrates. On July 5, 2017, in Lembolovo, the fungus was found alongside tall brown sporangia of Stemonitis fusca, with tiny grey cups of Mollisia cinerea visible on a log. Similarly, on August 12, 2017, in Kannelyarvi, the common grey disco fungus was observed, indicating its presence in the region during the summer months. The fungus appears to thrive in this area, with sightings recorded in different locations within a relatively short distance from Saint Petersburg. These observations suggest that Mollisia cinerea is a common species in the region, able to coexist with other fungi like Stemonitis fusca. The fungus's tiny grey cups are a distinctive feature, allowing for easy identification in the field.
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