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Recent field research on grassland fungi in Slovakia resulted in collection of rare geoglossaceous fungi. Previously published data on the distribution of the genus Geoglossum in Slovakia have been extended: G. glutinosum (11 sites), G. glabrum (3 sites), G. cookeanum (1 site), G. umbratile (9 sites) and G. fallax (3 sites). The last three species are new for the territory. Each treated species is described and ecological preferences and threat categories are discussed. A field identification key of accepted species is included.

Field research on grassland fungi in Slovakia resulted in collection of several rare fungi, including also geoglossaceous taxa, such as Microglossum viride (5 sites), Trichoglossum hirsutum (13 sites), Trichoglossum walteri (5 sites), Trichoglossum variabile (1 site), Microglossum olivaceum (2 sites), Thuemenidium atropurpureum (1 site). Last three species are new for Slovakia.

Successional processes in ectomycorrhizal macrofungi associated with Norway spruce plantations on former agricultural land were studied as reflected by sporocarps. Abundance and temporal distribution of sporocarps were recorded in permanent observation plots within stands of various ages in 1989–1992.