NiessliaceaeThe Niessliaceae are a family of fungi in the phylum Ascomycota, class Sordariomycetes. The family was updated in 2020.GeneraAs accepted by Wijayawardene et al. 2020; Atronectria Circinoniesslia Cryptoniesslia Eucasphaeria Malmeomyces Melchioria Miyakeomyces Myrmaeciella Myrtacremonium Neoeucasphaeria Niesslia Nitschkiopsis Paraniesslia Pseudohyaloseta Pseudonectriella Pseudorhynchia Rosasphaeria Taiwanascus Trichosphaerella Valetoniella ''Valetoniellopsis''