The authors give an emended delimitation of the genus Morganella ZELLER (Gasteromycetes) and discuss its taxonomic position and its geographic distribution. Seven species are recognized; six new combinations are made and one new species (M. afra KREISEL & DRING) is described. The only original species, M. mexicana ZELLER, is a synonym of M. fuliginea (BERK. & CURT.) KREISEL & DRING, but one of the collections, cited by ZELLER as M. mexicana, belongs to M. velutina (BERK. ex MASS.) KREISEL & DRING.

A chronologically arranged list of 59 taxa of phytoparasitic micromycetes, introduced to Germany after 1750, is presented. Another list enumerates 15 fungal taxa which have been introduced to other parts of Europe but may be expected in Germany, too. Most of the enumerated newcomers are members of the orders Pucciniales and Erysiphales. The new terms archaeomycete, neomycete, and ephemeromycete are proposed.

A preliminary world‐wide key to eight sections and 36 species of the gasteromycete genus Calvatia FR. emend. KREISEL is presented, and a list of specimina visa is added. — Handkea wandae SKIRG. 1991 is regarded as a synonym of H. lycoperdoides KREISEL.

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The author discusses possible effects of global warming on distribution and ecology of larger fungi, and presents examples of suggested indicator species which apparently are spreading from south to north. Only Basidiomycetes are corncerned, while actually no case of non-lichenized Ascomycetes is known. A continued monitoring of the mentioned species is recommended.