The term smut fungus
Like the terms agaric, polypore, lichen etc. the term smut fungus circumscribes the organization and life strategy of a fungus, but it is not a taxonomic term. Fungi that look superficially similar to the teliospore-forming members of the Ustilaginomycetes evolved in different fungal groups, e.g. the Microbotryales in the Uredinomycetes (Bauer et al. 1997) or Schroeteria in the Ascomycota (Nagler et al. 1989).
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