Notes on Hygrophoraceae — VI. Observations on some new taxa in Hygrocybe

In a preceding paper (Notes on Hygrophoraceae IV, Arnolds, 1985) Latin diagnoses have been provided of six new taxa of Hygrocybe from the Netherlands and Belgium, viz. H. calciphila, H. luteolaeta, H subglobispora forma aurantiorubra, H. viola, H. constrictospora and H. griseopallida. In this paper full descriptions are given of the first four of these taxa. In addition the nomenclature and taxonomic position of H. constrictospora are discussed. H. griseopallida is reduced to the synonymy of Hemimycena mairei (E. J. Gilb.) Sing.