Naetrocymbe Körb., Parerga lichenol. (Breslau) 5: 441 (1865).
MycoBank number: MB 3410; Index Fungorum number: IF 3410; Facesoffungi number: FoF 07878; 25 morphological species (Species Fungorum 2020), molecular data unavailable.
Type species: Naetrocymbe fuliginea Körb.
Notes: Most species in Naetrocymbe were transferred to Limacinula (Reynolds 1971), however, Luttrell (1973) noted that Naetrocymbe has questionable status. Naetrocymbe species are characterized by immersed, globose, black ascomata, surrounded by dark brown fungal tissue, thick- walled, clavate to obovoid asci, and 1-septate, oblong to long ellipsoid, hyaline ascospores. Naetrocymbe was accepted as a distinct genus by Barr (1979a) and Eriksson (1981). Species in this genus were found as non-lichen-forming fungi (Harris 1995) and found associated with Trentepohlia algae (Roux 2009; Coppins 2002). Hyde et al. (2013) noted that the concept of this genus is debatable.