Polynema Lév., Annls Sci. Nat., Bot., sér. 3 5: 274 (1846)

MycoBank number: MB 25008; Index Fungorum number: IF 25008; Facesoffungi number: FoF 12978; 9 morphological species (Species Fungorum 2020), 1 species with sequence data.

Type species – Polynema ornata (De Not.) Lév.

Notes – The coelomycetes genus Polynema was introduced by Léveillé (1846). The genus was redescribed by Sutton (1968) who accepted Neobarclaya as a synonym of Polynema. Nag Raj (1978) identified Neobarclaya is distinct from Polynema and segregated it from Polynema. Crous et al. (2018d) confirmed the placement of Polynema in Chaetosphaeriaceae based on phylogenetic analysis of ITS sequence data. Members of Polynema are mainly saprobes associated with plant leaves, culms and dead wood (Nag Raj 1993, Crous et al. 2018d). The genus is characterized by acervuloid, cupulate, setose conidiomata, hyaline conidiophores, discrete or integrated, cylindrical to clavate, hyaline conidiogenous cells and fusoid to subcylindrical, aseptate or 3 septate, mostly hyaline conidia with attenuated or filiform appendages at each end (Nag Raj 1993, Crous et al. 2018d).

Species

  • Polynema ornata