Taxonomy and Phylogeny of the Favolaschia calocera Complex (Mycenaceae) with Descriptions of Four New Species

Abstract

Favolaschia calocera was originally described from Madagascar, and reported to have a worldwide distribution. In the current study, samples of the Favolaschia calocera from Central America, Australia, China, Kenya, Italy, New Zealand, and Thailand were analyzed by using both morphological and molecular methods. Phylogenetic analyses were based on the internal transcribed spacer (ITS) dataset, and the combined five-locus dataset of ITS, large subunit nuclear ribosomal RNA gene (nLSU), the small subunit mitochondrial rRNA gene (mt-SSU), the small subunit of nuclear ribosomal RNA gene (nu-SSU), and the translation elongation factor 1α (TEF1). Our study proves that Favolaschia calocera is a species complex, and six species are recognized in the complex including four new species. Three new species F. brevibasidiata, F. brevistipitata, and F. longistipitata from China; and one new species F. minutissima from Asia. In addition, Favolaschia claudopus (Singer) Q.Y. Zhang & C. Dai, earlier treated as a variety of Favolaschia calocera R. Heim, were raised to species rank. Illustrated descriptions of these five new taxa are given. An identification key and a comparison of the characteristics of species in the Favolaschia calocera complex are provided.

Phylogeny, Divergence Time Estimation and Biogeography of the Genus Onnia (Basidiomycota, Hymenochaetaceae)

“…The discovery of new fungal species has rapidly increased with the development of molecular techniques, drawing attention to the huge fungal diversity that exists on earth ( Cui et al, 2019 ; He et al, 2019 ; Wu et al, 2020 , 2022 ; Dai et al, 2021 ; Wang K. et al, 2021 ; Zhang and Dai, 2021 ; Ji et al, 2022 ). Hymenochaetaceae is a core family of macrofungi that consists of approximately 670 poroid species ( Wu et al, 2022 ) and is an interesting subject for species diversity studies ( Dai, 2010 ; Wu et al, 2020 , 2022 ; Dai et al, 2021 ; Wang X. W. et al, 2022 ).…”

Three new species of Favolaschia (Mycenaceae, Agaricales) from South China

“…( Patouillard 1887 ), belongs to the Mycenaceae Overeem ( Agaricales ) ( Moncalvo et al 2002 ; Bodensteiner et al 2004 ). It is characterised by gelatinous basidiomata with poroid hymenophore, a monomitic hyphal system, a gelatinous hyphal structure, the presence of gloeocystidia and acanthocystida which are terminal, mostly swollen tips of hyphae covered by outgrowths ( Clémençon 1977 ) and amyloid basidiospores ( Singer 1945 , 1974 ; Gillen et al 2012 ; Capelari et al 2013 ; Magnago et al 2013 ; Zhang and Dai 2021 ; Zhang et al 2023 ). Favolaschia species have a worldwide distribution and prefer humid climates with the highest species diversity in subtropical to tropical zones ( Singer 1974 ; Gillen et al 2012 ; Magnago et al 2013 ).…”

“…Tolgor et al (2021) investigated the phylogenetic relationships of Favolaschia and its related genera in Mycenaceae and reported four species distributed in China. Zhang and Dai (2021) investigated phylogenetic analysis of the genus Favolaschia , based on a large sample and revealed four new species in the F. calocera complex. Until Zhang et al (2023) re-summarised the species diversity, phylogenetic relationships, divergence time and potential geographic distribution using a large number of samples covering a wide geographic range in China.…”

“… Favolaschia ; while the others belong to the F. sect. Anechinus ( Zhang and Dai 2021 ; Guo et al 2022 ; Ma et al 2022 ; Wu et al 2022a ; Dong et al 2023 ; Zhang et al 2023 ).…”

Oudemansin and 9-methoxystrobilurin derivatives with antimalarial activity from cultures of the basidiomycete Favolaschia minutissima: assignments of the absolute configurations of the isoprene-derived units

“…Dai (Mycenaceae), which is a recently described species. 15 The study led to the isolation and structure elucidation of five undescribed polyketides, oudemansins E ( 1 ), M ( 2 ), Q ( 3 ), and P ( 4 ), 9-methoxystrobilurin I ( 5 ), together with a γ-lactone derivative 6 , which was previously reported as a semisynthetic compound (Fig. 1).…”