After Parker, 1982

<==o Pyrenomycetes ()
   |--o Erysiphales ()
   |  `-- Erysiphaceae ()
   |--o Meliolales ()
   |  `-- Meliolaceae ()
   |--o Chaetomiales ()
   |  `-- Chaetomiaceae ()
   |--o Melanosporales ()
   |  `-- Melanosporaceae ()
   |--o Sordariales ()
   |  `-- Sordariaceae ()
   |--o Xylariales ()
   |  |-- Coniochaetaceae ()
   |  |-- Phyllachoraceae ()
   |  |-- Xylariaceae ()
   |  `-- Diatrypaceae ()
   |--o Diaporthales ()
   |  |-- Diaporthaceae ()
   |  `-- Halosphaeriaceae ()
   |--o Hypocreales ()
   |  `-- Hypocreaceae ()
   |--o Clavicipitales ()
   |  `-- Clavicipitaceae ()
   |--o Coryneliales ()
   |  `-- Coryneliaceae ()
   |--o Coronophorales ()
   |  `-- Coronophoraceae ()
   `--o Laboulbeniales ()
      |--o Herpomycetineae ()
      |  `-- Herpomycetaceae ()
      `--o Laboulbeniineae ()
         |-- Euceratomycetaceae ()
         |-- Ceratomycetaceae ()
         `-- Laboulbeniaceae ()

Reference(s):