PhyML tree based on concatenated ribosomal ITS + LSU sequences. Bootstrap values based on 100 bootstrap replicates are at the left of the supported node. Analysis assumed the GTR model of evolution with the transition/transversion ratio, number of invariable sites and shape of the gamma distribution estimated. The log likelihood of the tree was -3135.8. Bold type = holotype of Gymnopus confluens subsp. campanulatus.