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 Nolanea section Staurospora (Largent & Thiers) Noordel.

Comments:—A few species classified in section Staurospora were included in this study. Entoloma kipukae ( Horak & Desjardin 1993) , E. nothofagi (Horak 2008) , E. praestans ( Horak 1976) and E. conferendum ( Noordeloos 1992) , all have ‘Prismatic’ basidiospores ( Fig. 1 .m-o) and are placed in the /Nolanea-Claudopus clade ( Figs. 2, 3). It appears that species with nolaneoid (also described as mycenoid) habit and ‘Prismatic’ basidiospores are clearly different from species with ‘Cuboid’ basidiospores with similar macromorphological features. Our results are contrary to the hypotheses proposed by Noordeloos & Gates (2012) which suggested that species producing cuboid and prismatic basidiospores were closely related.These results also suggest the section Staurospora belongs to Nolanea and comprises species which produces ‘Prismatic’ basidiospores (not ‘Cuboid’), as originally proposed by Romagnesi (1974).

Figures

FIGURE 1. Scheme and SEM photos representing the faces and shapes and the new nomenclature proposed: a-d. Cuboid: b. Entoloma largentianum (MC4450, holotype), c. Trichopilus luteolamellatum (11RMT109), d. Inocephalus dragonosporus (MC4600); e-g. Pentagonal-dihedral-base: f. E. brunneocarnosum (TBGT5666, paratype), g. E. percuboideum (WU7051, holotype), h-i. Pentagonalincomplete-base: i. E. grave (ZTMyc42843, holotype), j-l. Pentagonal-simple-base: k-l. E. alboumbonatum (TJB8218), m-o. Prismatic: n. E. nothofagi (PDD72574), o. E. nothofagi (ZTMyc42828), p. pseudocuboid: q. Rhodogaster calongei (from Horak & Moreno 1998), r. Squamiferum type: E. squamiferum (PDD72722). Bar: b-c, f-r: 5 μm, d: 10 μm. Designations for basidiospore facets:A. apical face, B: abaxial face; Ba: basal face, D: adaxial face; h: hilo (thread); L: lateral face; Ld: dihedral face side of the base. Photos by: L.B. Benatti. Drawings by: F. Karstedt.