Polycyclus Höhn., Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 118: 1542 [82 repr.] (1909).
MycoBank number: MB 4312; Index Fungorum number: IF 4312; Facesoffungi number: FoF 02329; 2 morphological species (Species Fungorum 2020), molecular data unavailable.
Type species: Polycyclus andinus (Pat.) Theiss. & Syd., Annls mycol. 13(3/4): 210 (1915).
≡ Hysterostomella andina Pat., in Patouillard & Lagerheim, Bull. Herb. Boissier 3(1): 73 (1895).
Notes: Polycyclus was introduced by von Höhnel (1909a), however, the type species was selected by Theissen and Sydow (1915). Inácio and Cannon (2008) compared P. andinus and P. marginalis, and considered they were possibly conspecific. This genus was reported as pathogenic on living leaves of ferns (morphology see Inácio and Cannon 2008; Wijayawardene et al. 2018, 2020). Polycyclus is characterized by superficial, circular to elliptical, disc-like, black, flat ascostromata with the fissured centre raised up to the wart shape, and with 1–5 locules disposed as a ring around a central column, opening by longitudinal to irregular fissures (Inácio and Cannon).