Supplementary materials
TABLE A. Status of species names in Tricholomopsis.
Type locality provided according to World Geographical Scheme for Recording Plant Distributions.
Name	Status	Type locality (WGSRPD)	
Tricholomopsis araucariae Singer (1954) 	Accepted	South America	
Tricholomopsis atrogrisea Pegler (1983) 	Accepted	South America	
Tricholomopsis bambusina Hongo (1959) 	Accepted	Asia―Temperate	
Tricholomopsis bella A.H. Sm. (1960) 	Accepted	North America	
Tricholomopsis crocobapha (Berk. & Broome) Pegler (1977) 	Accepted	Africa	
Tricholomopsis decora (Fr.) Singer (1939) 	Accepted	Europe	
Tricholomopsis elata Hongo (1974) 	Accepted	Asia―Tropical	
Tricholomopsis elatipes Singer (1989) 	Accepted	South America	
Tricholomopsis elegans Dennis (1961) 	Accepted	South America	
Tricholomopsis flammula Métrod ex Holec (2009) 	Accepted	Europe	
Tricholomopsis flavescens (Peck) Singer (1951) 	Accepted	North America	
Tricholomopsis flavissima (A.H. Sm.) Singer (1951) 	Accepted	North America	
Tricholomopsis formosa (Murrill) Singer (1951) 	Accepted	North America	
Tricholomopsis fulvescens A.H. Sm. (1960) 	Accepted	North America	
Tricholomopsis glaucipes A.H. Sm. (1960) 	Accepted	North America	
Tricholomopsis humboldtii Singer, Ovrebo & Halling (1990) 	Accepted	South America	
Tricholomopsis lignifracta E. Horak (1980) 	Accepted	South America	
Tricholomopsis lividipileata P.G. Liu (1994) 	Accepted	Asia―Temperate	
Tricholomopsis nigra (Petch) Pegler (1986) 	Accepted	Asia―Tropical	
Tricholomopsis nigrosquamosa P.G. Liu (1994) 	Accepted	Asia―Temperate	
Tricholomopsis ornaticeps (G. Stev.) E. Horak (1971) 	Accepted	Australasia	
Tricholomopsis pteridicola Olariaga, Laskibar & Holec (2015)	Accepted	Europe	
Tricholomopsis resinosa A.H. Sm. (1960) 	Accepted	North America	
Tricholomopsis rutilans (Schaeff.) Singer (1939) 	Accepted	Europe	
Tricholomopsis sanguinea Hongo (1966) 	Accepted	Asia―Temperate	
Tricholomopsis sasae Hongo (1960) 	Accepted	Asia―Temperate	
Tricholomopsis shulanensis X. He (1989) 	Accepted	Asia―Temperate	
Tricholomopsis squamosa Thiers (1958) 	Accepted	North America	
Tricholomopsis subdecorosa (Murrill) A.H. Sm. (1960) 	Accepted	North America	
Tricholomopsis sulphurea (Peck) H.E. Bigelow (1969) 	Accepted	North America	
Tricholomopsis sulphureoides (Peck) Singer (1943) 	Accepted	North America	
Tricholomopsis totilivida (Murrill) Singer (1951) 	Accepted	North America	
Tricholomopsis tropica Dennis (1951) 	Accepted	South America	
Tricholomopsis valdiviana Garrido (1988) 	Accepted	South America	
Tricholomopsis fimbriatophylla (Kauffman) Singer (1951) 	Excluded = nom. conf.		
	…Continued on next page	
TABLE A. (Continued)			
Name	Status	Type locality (WGSRPD)	
Tricholomopsis ornata (Fr.) Singer (1943) 	Excluded = nom. conf.		
Tricholomopsis osiliensis Vauras (2009) 	Excluded = T. sulphureoides		
Tricholomopsis radicata (Peck) Singer (1942) 	Excluded = Megacollybia		
Tricholomopsis secedifolia (Murrill) Singer (1951) 	Excluded = Tricholoma?		
Tricholomopsis streetsii Gilb. (1974) 	Excluded = Cyptotrama		
Tricholomopsis thompsoniana (Murrill) A.H. Sm. (1960) 	Excluded = T. flavescens		
Tricholomopsis tricholomatoides Singer (1989) 	Excluded = Megacollybia		

TABLE B. Sequences used in the analysis downloaded from GenBank. 
Name	Country	Voucher	ITS GenBank accession	LSU GenBank accession	
T. decora	USA	PBM2482	DQ404384	AY691888	
Hygrophorus pudorinus (outgroup)			DQ490631	DQ457678	
T. rutilans	Canada	UBC F16251	EF530929	EF530929	
T. flammula 	Czech Republic	PRM:899108	FN554893	FN554893	
T. flammula 	Slovakia	PRM:899190	HE649941 	HE649941 	
T. decora	Slovakia	PRM:899160	HE649942	HE649942	
T. sulphureoides	Estonia	TU:101571	HE649944 	HE649944	
T. sulphureoides	Slovakia	PRM:899184	HE649945 	HE649945 	
T. sp.	Australia	MEL:2382945	KP012806 	KP012806 	
T. sp.	Australia	MEL:2382955	KP012816 	KP012816 	
T. sp.	Australia	MEL:2382784	KP012965 	KP012965 	
T. flammula 	Spain	ARAN-Fungi 00322	KP058973 	KP058974	
T. rutilans	Sweden	UPS-F-646219	KP058977 	KP058978	
T. rutilans	Sweden	BIO11313	KP058979 	KP058980	
T. rutilans aff.	Spain	ARAN-Fungi 00323	KP058982	KP058983	
T. pteridicola	Spain	ARAN-Fungi 320	KP058986	KP058987	
Phyllotopsis nidulans			GQ142019	GQ142039	
Pleurocybella porrigens			AB214900	EF537894