Type studies in Polyporaceae 31 Species described by V. Cesati
L. Ryvarden...........................................................................................................................5
Type studies in Polyporaceae 32 Species described by T. Petch
L. Ryvarden...........................................................................................................................9
Type studies in Stereum s. lato 5, Species described by M. J. Berkeley
L. Ryvarden.........................................................................................................................13
Notes on Homobasidiomycetes from St. Helena
L. Ryvarden & K.-H. Larsson.............................................................................................20
Notes on Heterobasidiomycetes from St. Helena
V. Spirin , L. Ryvarden & O. Miettinen..............................................................................25
Studies in Neotropical polypores 39. Trametes alba Ryvarden nov. sp
L. Ryvarden .......................................................................................................................32
Studies in Neotropical polypores 40. A note on Grammothele
L. Ryvarden .......................................................................................................................36
Studies in Perenniporia s.l. African taxa IX:
Perenniporia vanhullii sp. nov. from open woodlands. C. Decock & L. Ryvarden.............................................................................43
Notes on basidiomycetes on driftwood in Finnmark, Norway, L. Ryvarden .....................50