“Notes Our phylogenetic analysis (Fig. 1) shows that the morphologically defined taxon T. decora is a complex of several species. Besides T. decora sensu stricto and T. badinensis, there is also a well-supported clade of three North American collections (Fig. 1). Having no morphological data on these collections, we have left them undescribed.”
-Holec, Jan & Kunca, Vladimir & Kolarik, Miroslav. (2019). Tricholomopsis badinensis sp. nov. and T. sulphureoides—two rare fungi of European old-growth forests. Mycological Progress. 18. 321-334. 10.1007/s11557-018-1449-7.