A. Rebriev,1 I. A. Gorbunova,2 K. V. Dvadnenko1 NEW BOVISTA SPECIES FROM THE ALTAI-SAYAN REGION OF RUSSIA РЕБРИЕВ Ю. <...> НОВЫЕ ВИДЫ РОДА BOVISTA ИЗ АЛТАЕ-САЯНСКОГО РЕГИОНА РОССИИ 2 Central Siberian botanical garden of the Siberian branch of the Russian Academy of Sciences, Novosibirsk, Russia 1 Институт аридных зон ЮНЦ РАН, Ростов-на-Дону, Россия 1 Institute of Arid Zones of the South Science Center of the Russian Academy of Sciences, Rostov-on-Don, Russia 2 Центральный сибирский ботанический сад СО РАН, Новосибирск, Россия rebriev@yandex.ru Bovista altaica, B. disciseda and B. subcatastoma are the new gasteroid species described and illustrated. <...> The analysis of morphological features shows clearly differences of newly described species from the known species. <...> Даны описания и иллюстрации новых для науки видов гастероидных базидиомицетов Bovista altaica, B. disciseda и B. subcatastoma. <...> B. altaica характеризуется рудиментарной субглебой, умеренно-толстым капиллицием и яйцевидными спорами. <...> Altai-Sayan Region is situated in the center of Asia and includes Altai (Altai Mountain Country), Sayan Mountains, ranges Kuznetsky Alatau and Salair, mountains of Tuva and Mongolia (between Mongolian Altai, Khangai and Hovsgol Lake), and intermountain depressions. <...> The Altai-Sayan eco-region geographically coincides with Altai-Sayan Mountain Country. <...> Diversity of natural conditions, geographical position of Altai-Sayan Region, diversity in vegetation cover, climate differences lead to a great biodiversity (Shmakov, 2007). <...> In 2007 (Rebriev, Gorbunova, 2007), we published the first results on gasteromycetes inventarization of the original collection from the Mycological herbarium (LE) of the V. L. Komarov Botanical Institute of Russian Academy of Sciences (BIN) and from literature sources; 84 species were pointed. <...> In Tuva Republic specimens have been collected in the desert-steppe zone of the Ubsu-Nur province, in the steppe region of South Tannu-Ola and Sangilen, in the southern flank of the Western Tannu-Ola, in its western part. <...> The shrub understory is always well developed, its coverage reaching 70 % in the lower part of the mountain steppe and forest zone and dropping to 10 % on low gradient slopes. <...> The moss layer in different coenoses is variously developed and formed by Rhytidium rugosum and Abietinella abietina <...>