Regnum Mycetoideum
   Class Coniomycetes
     Order Entophytæ Nees
       Suborder Hypodermia
         Genus Cæoma Link (1809), nom. sanct.
           1 Subgenus Uredo (Pers.) Fr. (1821), nom. inval.
           2 Subgenus Cœomurus Fr. (1821), nom. inval.
           3 Subgenus Puccinia (Pers.) Fr. (1821), nom. sanct.
           4 Subgenus Aecidium (Pers. ex J.F.Gmel.) Fr. (1821), nom. inval.