The second record in Ukraine of a rare fungus Flammulina ononidis (Physalacriaceae, Agaricales) is reported. This species is known in 16 European countries but is rare in most of them. In Ukraine, it has not been found for more than 50 years. The article provides a complete description of the macro- and microscopic details of the collected fruit bodies, as well as distribution data. The differences from some related species are described and original illustrations of the fungus are provided.

Keywords: Agaricales, Flammulina, new record, Ononis spinosa

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