New Data on Agaricoid Basidiomycetes of the Shantar Islands National Park (Khabarovsk Territory, Russia)

The Shantar Islands is an archipelago in the western part of the Sea of Okhotsk, at a distance of about 50 km from the mainland coast. In August 2019, we have carried out mycological studies on the islands of Bolshoi Shantar and Prokofiev. An annotated list is given of 103 species first found in the national park; 21 species of them were found in Khabarovsk Territory for the first time. The Shantar Islands are geographically the northernmost area in the Khabarovsk Territory, where specialized mycological studies were carried out. Such new species for the region as Cortinarius acutus, C. bivelus, C. traganus, Chromosera lilacina, Laccaria bicolor, in the Russian Far East were previously known only from more northern regions: Magadan Region, Kamchatka, Chukotka, Yakutia and from the taiga zone of Amur Region. Taking into account previously published data, a total of 105 species of agaricoid basidiomycetes are known for the national park.