The present work represents an abridged, updated version of the Martin & Alexopoulos monograph ‘The Myxomycetes’ of 1969, omitting all taxonomic information on subgeneric taxa of the text. The introductory chapters are supplemented by the results of investigations since 1969. In the taxonomic part three families and two genera, described as new since 1969, are accepted. The 41 coloured plates, representing 367 species of Myxomycetes, are the same as those of the monograph. Typography and binding are up to the same high standard.