Complex sentence: Glomerellales is an order of fungi within the subclass Hypocreomycetidae and contains three families, Glomerellaceae, Australiascaceae, and Reticulascaceae.
Split into simpler sentences: Glomerellales is an order of fungi within the subclass Hypocreomycetidae. It contains three families, Glomerellaceae, Australiascaceae, and Reticulascaceae.