A taxonomic and nomenclatural revision of some representatives of Clavariaceae is presented based on extensive collecting in central and western Europe. Five species originally described from Europe are identified, redescribed and delimited: Clavaria fragilis, Ramariopsis crocea, R. corniculata, R. helvola and R. pulchella. Lectotypes, epitypes or neotypes are designated for all these species. Descriptions are based on macro- and micromorphological characters and supplemented with DNA analyses of the nrLSU regions from 20 specimens. The molecular phylogenetic analyses reconstructed a phylogram showing relationships among the discussed species as well as some closely related taxa. The taxonomic value of the ratio of length and width of spores (Q-value) is discussed.

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.

A new species from Slovakia and the Czech Republic, Pseudoplectania lignicola, is described and illustrated. It is distinguished from other members of the genus by a centrally arranged globose membranous sheath surrounding the spores, thick ectal excipulum of oblong cells at the apothecial base, and growth on less specifc biotopes. Comparisons with similar species and the diagnostic signifcance of membranous sheath surrounding the ascospores are also discussed.

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.