Gymnopilus maritimus (Basidiomycota, Agaricales), a new species from coastal psammophilous plant communities of northern Sardinia, Italy, and notes on G. arenophilus

Abstract

The new species Gymnopilus maritimus is described from coastal plant communities of Juncus maritimus, growing on sandy soil or on decaying plants, from northwestern Sardinia (Italy). The distinguishing features of G. maritimus are: (1) an unusual habitat, (2) robust basidiomata, (3) mild taste, and (4) big and strongly warted spores. The new species is compared with the micromorphologically similar species G. fulgens sensu auct. Brit. p.p. and the biogeographically and ecologically similar species G.arenophilus, as well as with other European species. A photograph of fresh material, drawings of the main micromorphological features, and FESEM and optical microscope microphotographs of basidiospores are added. Furthermore, some notes on micromorphological characters of G. arenophilus are presented and its distribution area enlarged with a record from France. A key for the European species of Gymnopilus morphologically, ecologically, and/or biogeographically related to G. maritimus is presented. The phylogeny inferred from ITS rDNA sequences revealed that G. maritimus represents an independent species and that it is not related to G. arenophilus or G. fulgens. It is the sister group of the clade containing G. imperialis and G. spectabilis, but with a bootstrap support below 50%. The characters shared by the species in this clade are: (1) robust basidiomata, (2) pileus fibrillose or scaly-fibrillose, and (3) spores longer than 8 µm, dextrinoid and strongly warted. Gymnopilus imperialis and G. spectabilis differ by the basidiomata with membranous ring in the stem, living on conifers or decaying wood, and having narrower or wider spores, respectively.

Gymnopilus penetrans and G. swaticus sp. nov. (Agaricomycota: Hymenogastraceae); a new record and a new species from northwest Pakistan

“…There was a total of 653 positions in the aligned dataset. The ITS based cladogram (Figure 1) of Gymnopilus species is represented by eight clades in which the position of the taxa was according to previous studies (Rees et al 2002;Guzmán-Dávalos et al 2003;2009).…”

Gymnopilus pholiotoides (Agaricales, Basidiomycota), um novo registro inesperado em uma área urbana no Brasil

“…Species of Gymnopilus are reported worldwide, such as Africa (Pegler 1977, Høiland 1998, Asia (e.g., Kasuya et al 2016, Suwannarach et al 2017, Liu & Bau 2019, Bashir et al 2020, Thorn et al 2020, Europe (e.g., Høiland 1990, Bon & Roux 2002, Holec 2005, Guzmán-Dávalos et al 2009, North America (Hesler 1969, Guzmán-Dávalos 1994, 1996a, Guzmán-Dávalos & Guzmán 1991, 1995, Thorn et al 2020, and regions of Central (e.g., Guzmán-Dávalos 1996b, Guzmán-Dávalos & Ovrebo 2001 and South America (e.g., Singer & Digilio 1952, Pegler 1997, Cortez & Coelho 2005, Magnago et al 2013, Silva-Junior & Wartchow 2015.…”