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

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

Type speciesGnomonia gnomon (Tode) J. Schröt.

NotesGnomonia is characterized by astromatic, solitary, thin-walled, immersed perithecia with long necks and ascospores with a single median septum. The sexual morph of Gnomonia gnomon is illustrated below.

Figure 110 Gnomonia gnomon (Material examined – FINLAND, Helsinki, Helsinki University Botanical Garden, overwintered fallen leaves of Corylus avellana L. (Betulaceae), 19 April 2004, Shchigel, Dmitry S., BPI 844273, epitype). a Packet of herbarium. b Herbarium specimen. c Ascomata on substrate. d Cross section of ascoma. e Peridium. f-h Asci. i-l Ascospores. Scale bars: c = 1 mm, d = 200 µm, e, f-h = 20 µm, i-l = 10 µm.


  • Gnomonia gnomon