Entoloma

Karstedt, Fernanda, Capelari, Marina, Baroni, Timothy J., Largent, David L. & Bergemann, Sarah E., 2019, Phylogenetic and morphological analyses of species of the Entolomataceae (Agaricales, Basidiomycota) with cuboid basidiospores, Phytotaxa 391 (1), pp. 1-27 : 22

Entoloma subgenus Trichopilus (Romagn.) Noordel.

Comments:—Here, we emphasize that Trichopilus appears to be a taxonomic group supported by phylogenetic analysis with four genes (in this study, excluding the species with ‘Cuboid’ basidiospores) and also previously with ITS sequences ( Karstedt & Capelari 2017). Based on morphology, species with 5–6 angled basidiospores and either tibiiform or lecithiform (ampulliform) cystidia (Romagnesi & Gilles 1978, 1979, Largent 1994, Aime et al. 2010, Noordeloos & Gates 2012) phylogenetically cluster in this clade ( Fig. 2-3), corresponding to the species placed in section Trichopilus ( Noordeloos 1981) .

The species previously classified into Trichopilus , that do not share the characters above, belong in other subgenera (sections) in distinct clades. For example, those taxa with fusoid cystidia and 5–6 angled basidiospores, such as Trichopilus vividus , are placed in subgenus Inocephalus and those with ‘Cuboid’ basidiospores, as Trichopilus luteolamellatus belong to subgenus Cubospora based on phylogeny and the shape of the basidiospores ( Figs. 2, 3).