Glomerellales is an order of fungi within the subclass Hypocreomycetidae. Unlike other orders within Hypocreomycetidae, members of the Glomerellales exhibit a darkly pigmented perithecia. Glomerellales contains three families, Glomerellaceae, Australiascaceae, and Reticulascaceae. The order was first recognized by Chadefaud (1960), although it was not validly published at this time. It has since been cited by Lanier et al. (1978) and invalidly published by Locquin (1984). However the Glomerellales was still not valid until M. Réblová et al. study in 2011