Atractosporales Zhang et al.
Atractosporales was introduced to resolve the taxonomic problems of annulatascaceae-like taxa previously placed in Annulatascaceae and Sordariomycetes genera incertae sedis. Three families (viz. Atractosporaceae, Conlariaceae, and Pseudoproboscisporaceae) were included in the order by Zhang et al. (2017). The monophyly of this order is not well-supported in previous studies (Luo et al. 2019) and in this study. Luo et al. (2019) showed that Junewangiaceae and Cancellidium also clustered in Atractosporales and this agrees with our phylogenetic analyses, but with low bootstrap support. We therefore retain Cancellidium (Tubaki 1975) as Sordariomycetes genera incertae sedis. This ambiguous group may be included in this order with larger taxon sampling in future phylogenetic analyses. The divergence time for Atractosporales has been estimated as 106 MYA, which falls in the range for family status. The status of Atractosporales members may therefore need revision following further study. Currently there are three families and six genera in this order (Hyde et al. 2020).
Hyde KD, Norphanphoun C, Maharachchikumbura SSN, Bhat DJ et al. 2020 – Refined families of Sordariomycetes. Mycosphere 11(1): 305–1059.
Luo ZL, Hyde KD, Liu JK, Maharachchikumbura SSN et al. 2019 – Freshwater Sordariomycetes. Fungal Diversity 99, 451–660.
Tubaki K. 1975 – Notes on the Japanese Hyphomycetes. VII. Cancellidium, a new hyphomycetes genus. Transactions of the Mycological Society of Japan 16, 357–360.
Zhang H, Dong W, Hyde KD, Maharachchikumbura SSN et al. 2017a – Towards a natural classification of Annulatascaceae-like taxa: introducing Atractosporales ord. nov. and six new families. Fungal Diversity 85, 75–110.[u1]