Seynesiopeltis F. Stevens & R.W. Ryan, in Stevens, Bulletin of the Bernice P. Bishop Museum, Honolulu, Hawaii 19: 69 (1925).

MycoBank number: MB 5020; Index Fungorum number: IF 5020; Facesoffungi number: FoF 07910, 1 morphological species (Species Fungorum 2020), molecular data unavailable.

Type species: Seynesiopeltis tetraplasandrae F. Stevens & R.W. Ryan.

Notes: Seynesiopeltis is the type genus of Seynesiopeltidaceae and it was established by Stevens (1925) as a monotypic genus with S. tetraplasandrae as the type and has remained monotypic. This genus was earlier assigned to Microthyriaceae by Stevens (1925) which was followed by Muller and von Arx (1962) and Lumbsch and Huhndorf (2010). This genus was moved to Dothideomycetes genera incertae sedis by Wu et al. (2011b) since it was unlike any other member of the class Dothideomycetes. It is characterised by unfree mycelium, round and radiate ascomata with thallus being setose. Stevens (1925) mentioned that species in this genus resembles Seynesia but are different in that they possess one to several ascomata in one fungus body and that this bears setae which intensify the uniqueness of the genus and family. However, no setae in the type specimen was observed by Hyde et al. (2013). A plausible reason might be loss of setae during storage as the latter is described as being fragile. The genus is monotypic and warrants further investigation.