Gabarnaudia is a genus of anamorphic fungi that was placed in the family Ceratocystidaceae, until phylogenetic analysis by Hausner and Reid (2004) and De Beer et al. (2013a) showed that Gabarnaudia fimicola G. betae and G. humicola clustered within genus Sphaeronaemella (Melanconiellaceae, Diaporthomycetidae class).
The genus was circumscribed in 1974 and is named in honor of French mycologist Gabriel Arnaud. In 2008, it formerly contained five species that were known from Asia and Europe. Until 3 species were transferred to Ceratostomataceae family
Hyde et al. (2020c) and Wijayawardene et al. (2022) placed Gabarnaudia in Microascales genera incertae sedis.
Species As accepted by Species Fungorum;
Gabarnaudia cucumeris Gabarnaudia tholispora
Former species; G. betae = Sphaeronaemella betae, Ceratostomataceae G. fimicola = Sphaeronaemella fimicola, Ceratostomataceae G. humicola = Sphaeronaemella humicola, Ceratostomataceae
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