The generalized information on the distribution of Pisolithus arhizus (Sclerodermataceae, Boletales, Basidiomycota) in Ukraine is provided. Pisolithus arhizus is listed in the Red Data Book of Ukraine as a rare species reported only from Kharkiv, Kherson, Odesa, Poltava regions and the Autonomous Republic of Crimea. This article significantly expands our knowledge on distribution patterns of P. arhizus in Ukraine. New records from Donetsk, Ivano-Frankivsk, Mykolayiv, Zaporizhzhya, and Zhytomyr regions are added to those previously reported. Despite the increased number of the reports, this fungus is nevertheless considered to be a rare species in Ukraine; therefore, it is necessary to search for its new localities.
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