This paper, a supplement to the monograph of Marasmius s. str. from tropical Africa published by the author in 2007, includes a total of 40 taxa. Five of these are here described as new species: Marasmius portentosus (sect. Globulares), M. conicoparvus, M. brunneoniger, M. purpureotinctus and M. sepiopileatus (sect. Sicci).