New or interestingHyphomycetes on decaying pine litter from Czechoslovakia

Twenty three species ofHyphomycetes new to Czechoslovakia are listed with comments and illustrations. Seven are new to science—Blastophorum pini, Bloxmia bohemica, Junctospora pulchra, Linodochium formosum, Phaeostalagmus peregrinus, Sporidesmium doliiforme, Xiambola mirabilis—and of these, two are the types of new genera (Junctospora andXiambola). The new species and genera are described, illustrated and discussed. Anamorphs ofMytilidion gemmigenum Fuckel andPseudohelotium pineti (Batsch exFr.)Fuckel inTaeniolella andLinodochium, respectively are reported. Collections of these fungi from Britain are also cited. Data on morphology, ecology and distribution of those species occurring in both Britain and Czechoslovakia are compared.