Cystocoleaceae Locq. ex Lücking, B.P. Hodk. & S.D. Leav., in Lücking et al., Bryologist 119(4): 401 (2017).

MycoBank number: MB 819262; Index Fungorum number: IF 819262; Facesoffungi number: FoF 06637, 1 species.

Lichenized; Thallus superficial, dense, fluffy, filamentose; photobiont Trentepohlia. Hyphal sheath around the algal filaments composed of somewhat contorted, jigsaw puzzle-shaped cells forming a closed layer. Ascomata and conidiomata undetermined.

TypeCystocoleus Thwaites.

NotesCystocoleaceae was first mentioned by Locquin (1984). Based on nuLSU, nuSSU and mtSSU sequence data, Muggia et al. (2008) found that Cystocoleus belonged to Capnodiales, rather than phylogenetically close to lichenized members within Dothideomycetidae. This result was subsequently confirmed by Nelsen et al. (2009) and Ertz et al. (2014). Crous et al. (2009c) revealed Cystocoleus as a member of Teratosphaeriaceae in their comprehensive study of Capnodiales. However, Cystocoleus was treated as Capnodiales genera incertae sedis in the phylogenetic study of Quaedvlieg et al. (2014). Lücking et al. (2017) validly established Cystocoleaceae and assigned it in Capnodiales. Cystocoleaceae is a monotypic family comprising a single genus Cystocoleus (Lücking et al. 2017, Wijayawardene et al. 2017a, 2018).