Stemphylium Wallr., Fl. crypt. Germ. (Norimbergae) 2: 300 (1833).
MycoBank number: MB 10081; Index Fungorum number: IF 10081; Facesoffungi number: FoF 07388; 99 species (Species Fungorum 2020), 31 species with molecular data.
Type species – Stemphylium botryosum Wallr.
Notes – Stemphylium typified by S. botryosum is a monophyletic genus in Pleosporaceae (Woudenberg et al. 2017). However, the sexual morph to which Stemphylium is linked, Pleospora, is known to be polyphyletic. With the agreement of the one fungus-one name initiative, the use of Stemphylium over Pleospora has been recommended by the Working Group on Dothideomycetes of the International Committee on the Taxonomy of Fungi (Rossman et al. 2015). Stemphylium comprises dematiaceous hyphomycete asexual morphs which are unique in forming phaeodictyospores, with percurrent proliferation of its conidiophores, and apically swollen conidiogenous cells (Köhl et al. 2009) (morphology see: Zhang et al. 2012b, Ariyawansa et al. 2015c, Crous et al. 2016b, Woudenberg et al. 2017).