Diaporthales » Gnomoniaceae


Gnomonia Ces. & De Not., Comm. Soc. crittog. Ital. 1(fasc. 4): 231 (1863)

Diaporthomycetidae, Diaporthales, Gnomoniaceae, Gnomonia

Index Fungorum number: IF 2099; Facesoffungi number: FoF 02109; 111 morphological species (Species Fungorum 2020); 28 species with sequence data.


Saprobic on hibernated, fallen or attached leaves of shrubs, usually epiphyllous or on petioles, rarely hypophyllous. Sexual morph: Ascomata perithecial, solitary, black, without stroma or sometime very poorly developed stromatic tissues, initially immersed, later become erumpent, infrequently partly erumpent, occasionally wide opening with pinkish white powdery collar around the neck, globose to subglobose when humid, bowl-shaped when dry, with 1–3 necks. Necks central to marginal, never truly lateral, slightly curved, longer, sometimes almost absent. Asci 8-spored, unitunicate, short pedicellate, oval to fusiform, with J- apical ring. Ascospores overlapping uniseriate or irregularly multi-seriate, 1-septate, fusiform to acerose, ends barely rounded, appendages ovoid, subulate or acicular with diffuse ends or infrequently absent. Asexual morph: Undetermined (adapted from Maharachchikumbura et al. 2016).


Type species: Gnomonia vulgaris Ces. & De Not., Comm. Soc. crittog. Ital. 1(fasc. 4): 232 (1863)


Notes: Gnomonia is usually characterized by astromatic, solitary, thin-walled, immersed perithecia with long necks and ascospores with a single median septum (Hyde et al. 2020). The sexual morph of Gnomonia gnomon is illustrated in this entry.



Species illustrated in this entry:

Gnomonia gnomon (Tode) J. Schröt




Maharachchikumbura SSN, Hyde KD, Jones EBG, McKenzie EHC et al. 2016 – Families of Sordariomycetes. Fungal Diversity 79, 1–317

Hyde KD, Norphanphoun C, Maharachchikumbura SSN, Bhat DJ et al. 2020 – Refined families of Sordariomycetes. Mycosphere 11, 305–1059





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The webpage Sordariomycetes provides an up-to-date classification and account of all genera of the class Sordariomycetes.


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