Regnum Mycetoideum
   Class Hyphomycetes Fr. (1821) see Class Monilia A.Rich. (1832)
     Order Inomycetes
       Suborder Byssacei
         Epiphyti
           Genus Herpotrichum Fr. (1819), nom. sanct., nom. dub. see Genus Protonema C.Agardh (1824)