Abstract
Based on a combined ITS-LSU rDNA analysis, the omphalinoid genus Haasiella is shown to be part of the Hygrophoroid clade and sister to Hygrophorus. H. venustissima and H. splendidissima are conspecific; H. splendidissima is the tetrasporic/clamped and heterothallic form of H. venustissima.
Acknowledgments
We most sincerely thank A. Hausknecht (Vienna, Austria), J. Holec (Prague, Czech Republic), J. Vila (Barcelona, Spain) and P. Roux (Sainte-Sigolène, France) for sending herbarium collections.