Contains the following papers:
- The genus Grammothelopsis (Aphyllophorales, Basidiomycota) G. Robledo & L.Ryvarden
- Ceriporiopsis herbicola (Polyporaceae, Basidiomycota) R. A. Fortey & L. Ryvarden
- Studies in Neotropical polypores 22. Additional new and rare species from Guyana. M. C. Aime, L. Ryvarden & T. W. Henkel
- Studies in Neotropical polypores 23. New and interesting wood-inhabiting fungi from Belize. L. Ryvarden
- Studies in Neotropical polypores 24 New and interesting species from Costa Rica. M. Mata & L. Ryvarden
- Studies in corticioid fungi from Venezuela III (Basidiomycotina, Aphyllophorales). K. Hjortstam & L. Ryvarden