Data on the diversity of aphyllophoroid fungi in the surroundings of the Kem’ Town and Kemsky District of the Republic of Karelia are presented. As of now, 75 species are known from Kem’ Town surroundings and 185 species from the Kemsky District. Antrodia hyalina Spirin, Miettinen et Kotir., Tomentella cinereoumbrina (Bres.) Stalpers, Tyromyces kmetii (Bres.) Bondartsev et Singer and two arcto-alpine species (Clavaria sphagnicola Boud., Ramariopsis subarctica Pilát) are noted for the Republic of Karelia for the first time. 74 species are new for the Kemsky District and 71 species are new for the biogeographic province Karelia keretina (Kk). The current total record for the Kemsky District is 185 species of aphyllophoroid fungi. The current total record for the Kemsky District is 185 species of aphyllophoroid fungi. New sites were discovered for four species from the Red Data Book of the Republic of Karelia (Antrodia mellita Niemelä et Pentillä, Clavariadelphus pistillaris (L.) Donk, Lentaria afflata (Lagger) Corner, Tomentella crinalis (Fr.) M. J. Larsen). Additionally, Ramaria flavobrunnescens (G. F. Atk.) Corner can be considered as a candidate for the new edition of the regional Red Data Book. Seven indicatorspecies for virgin forests and 15 for old-growth forests of eastern Fennoscandia were identified. The degree of knowledge on aphyllophoroid fungi biomorphs in this territory in comparison with other well-studied territories of the Republic was assessed. The distribution map for the species richness of clavarioid fungi in Eastern Fennoscandia (from the Arctic coast of the Barents Sea to the Gulf of Finland and Lake Ladoga) is provided. The north-to-south change in the species richness of clavarioid fungi, from tundra to south-taiga forests of Eastern Fennoscandia, is discussed.