Abstract: Taxonomic ranks above the species level are inherently arbitrary. However, there is a growing number of publications aimed at more consistent classifications with comparable ranks among taxa. For this study, we use a recently developed temporal approach that utilizes time-calibrated chronograms to identify and define temporal bands for comparable ordinal and family ranks in Lecanoromycetes, the most diverse lineage of lichen-forming fungi. A multi-locus dataset consisting of 539 taxa in the two major subclasses of Lecanoromycetes, Lecanoromycetidae and Ostropomycetidae, was used to address the circumscription of families and orders. Based on the temporal banding approach, clades that share a common ancestor between 176 and 194 Mya and a time window of 111–135 Mya correspond to order-level and family-level, respectively. Most currently accepted orders and families were supported in their current circumscription, but some new taxa are described. Here we propose a revised, temporally based classification for the two subclasses. Specifically, three new orders are proposed: Sporastatiales, Schaereriales and Thelenellales. Arctomiales, Hymeneliales and Trapeliales are synonymized with Baeomycetales. Varicellariaceae are proposed as a new family, and Diploschistaceae and Thelotremataceae are resurrected. Squamarinaceae and Stereocaulaceae are synonymized with Cladoniaceae, Carbonicolaceae are synonymized with Lecanoraceae, Letrouitiaceae are synonymized with Brigantiaeaceae, Lobariaceae and Nephromataceae are synonymized with Peltigeraceae, Thrombiaceae are synonymized with Protothelenellaceae, and Miltideaceae are synonymized with Agyriaceae. This study represents an important step towards more consistent, comparable deeper-level taxonomic rankings in the most diverse lineages of lichen-forming fungi.
Notes: New: Schaereriales Lumbsch & Leavitt (type: Schaereriaceae M.Choisy ex Hafellner), Sporastatiales Lumbsch & Leavitt (type: Sporastatiaceae Bendiksby & Timdal), Varicellariaceae B.P.Hodk., R.C.Harris & Lendemer ex Lumbsch & Leavitt (type: Varicellaria Nyl.), Thelenellales Lumbsch & Leavitt (type: Thelenellaceae O.E.Erikss. ex H.Mayrhofer). Arctomiales S. Stenroos, Miadl. & Lutzoni, Hymeneliales S.Stenroos, Miadl. & Lutzoni and Trapeliales B.P.Hodk. & Lendemer synonymized with Baeomycetales Lumbsch, Huhndorf & Lutzoni. Carbonicolaceae Bendiksby & Timdal synonymized with Lecanoraceae Körb. Letrouitiaceae Hafellner & Bellem. synonymized with Brigantiaeaceae Hafellner & Bellem. Lobariaceae Chevall. and Nephromataceae Wetmore ex J.C.David & D.Hawksw. synonymized with Peltigeraceae Dumort. Miltideaceae Hafellner synonymized with Agyriaceae Corda. Squamarinaceae Hafellner & Stereocaulaceae Chevall. synonymized with Cladoniaceae Zenker. Thrombiaceae Poelt & Vězda ex J.C.David & D.Hawksw. synonymized with Protothelenellaceae Vězda, H.Mayrhofer & Poelt.
URL: https://academic.oup.com/botlinnean/advance-article-abstract/doi/10.1093/botlinnean/boy060/5091569?redirectedFrom=fulltext
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Current date: 2024.04.27.OK