Atheliales is an order of mostly corticioid or athelioid fungi placed under the Agaricomycetidae subclass. It was first described by Walter Jülich in 1981 along with 4 families, Lobuliciaceae, Atheliaceae, Byssocorticiaceae and Pilodermataceae. Another family was discovered in 2020 called Tylosporaceae. It contains roughly 100 described species in 20 genera with varied ecological diversity. Most species have relatively simple gross morphology and do not have a lot of diagnostic characters. They produce crust-like fruiting bodies attached loosely to their substrate.
![(Atheliaceae - O-L-400577) @11 [ ] by-nc (2023) Antoine Simon Natural History Museum, University of Oslo, Norway](https://892685.ixgpkh.asia/pics/_w70/OLICH/O-L-400577%2B1677534216.jpg "(Atheliaceae - O-L-400577) {} [ ] by-nc (2023)")
