Pleohelicoon Jayasiri, E.B.G. Jones & K.D. Hyde, in Jayasiri et al., Mycosphere 10(1): 98 (2019).
MycoBank number: MB 555565; Index Fungorum number: IF 555565; Facesoffungi number: FoF 05271; 2 morphological species (Species Fungorum 2020), 2 species with molecular data.
Type species – Pleohelicoon fagi Jayasiri, E.B.G. Jones & K.D. Hyde, in Jayasiri et al., Mycosphere 10(1): 99 (2019).
Notes – Jayasiri et al. (2019) introduced this genus to accommodate Helicoon species belonging to Pleosporales, while other helicoon-like species belong to Tubeufiales (Lu et al. 2018). Phylogenetic analysis indicated that Pleohelicoon clustered with Pleomonodictys within Pleomonodictydaceae (Jayasiri et al. 2019). Pleomonodictys differs from Pleohelicoon in having blastic conidia that are formed solitary or in short chains, muriform, verrucose to tuberculate and variable in shape. Pleohelicoon has tightly coiled 7–9 times to form an ovoid sphaerical, ellipsoidal, hollow, doliiform spore body, with multi-septate conidial filament (Jayasiri et al. 2019).