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Analyses of the protein-coding genes rpb1, rpb2, and tef1, alone or in combination with
nuclear lsu, ssu, and 5.8S ribosomal genes, suggest that Malasseziales are included in the
Ustilaginomycetes, but analyses of nuclear ribosomal genes alone or in combination with
atp6 and β-tubulin suggest that Malasseziales is in the Exobasidiomycetes (Bauer et al. 2001;
Begerow et al. 2007; Matheny et al. 2007b; Weiß et al. 2004).
Subphylum: Agaricomycotina R. Bauer, Begerow, J. P. Samp., M. Weiß & Oberw.,
Mycol. Progr. 5: 45 (2006).
Equivalent to Hymenomycetes (Swann & Taylor 1995) or Basidiomycetes (Kirk et al. 2001;
Hibbett 2007).
Class: Tremellomycetes Hibbett, Matheny & Binder, class. nov.
MycoBank no.: MB 501295
Fungi dimorphici; basidiomata gelatinosa vel absentia; parenthesomata sacculata vel raro absentia;
basidia septata vel aseptata.
Typus: Tremella Pers. 1794.
Dimorphic fungi. Fruiting bodies gelatinous or absent, parenthesomes sacculate or
absent, basidia septate or non-septate. The least inclusive clade containing Tremellales,
Filobasidiales and Cystofilobasidiales.
Equivalent to Tremellomycetidae sensu Swann & Taylor (1995) and Weiß et al.
(2004). The name Tremellomycetidae was earlier published by Locquin (1984), but
without a Latin diagnosis, and it is therefore invalid under the Code.
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