The type species of Tetrapyrgos and Campanella (Basidiomycota, Agaricales) are redescribed and epitypified

Tetrapyrgos atrocyanea, the type species of Tetrapyrgos, and Campanella buettneri, the type species of Campanella, are redescribed and epitypified based on recently collected material from Madagascar and Principe, respectively, supported with morphological and LSU, ITS sequences data. Line drawings, colour photographs, and comparisons with similar taxa are provided.