Mycogone
Mycogone Link, Mag. Gesell. naturf. Freunde, Berlin 3(1–2): 18 (1809)
Hypocreomycetidae, Hypocreales, Hypocreaceae, Mycogone
Index Fungorum number: IF 9026; Facesoffungi number: FoF 10849; 28 morphological species; 2 species with sequence data
Fungicolous, mycoparasitic on carpophores of some Basidiomycota and Ascomycota representatives, sometimes isolated from decaying plant parts. Sexual morph Undetermined. Asexual morph Conidiophores of phialidic stage semi-macronematous, stipe straight or flexuous, hyaline, smooth-walled, verticillate, bearing fewer to dense verticils of phialides. Conidiogenous cells monophialidic, discrete, arrange verticillately, determinate, subulate, ampulliform. Phialoconidia arranged in shiny heads, variable, ovoid to oblong, ellipsoid, obpyriform to clavate, aseptate or 1-septate, hyaline, smooth-walled. Aleurioconidia bearing hyphae hyphae micronematous or semi-macronematous, short, branched or unbranched. Aleurioconidia bearing cell occur terminally on lateral branches of vegetative hyphae or intercalary, monoblastic, determinate, cylindrical or ampulliform. Aleurioconidia solitary, dry acrogenous, globose or pyriform, bi-cellular (1-septate), not constricted at the septum, upper cell larger, yellow–brown, black, thick-walled, tuberculate or spinose; lower cell smaller, conical or barrel-shaped, thin-walled, wall smooth or finely warted (copied from Perera et al. 2023).
Type species: Mycogone rosea Link, Mag. Gesell. naturf. Freunde, Berlin 3(1–2): 18 (1809)
Notes: Link (1809) described Mycogone for a single species M. rosea. Later several species were added to the genus based on morphology. Twenty-eight species are listed in the genus (Species Fungorum 2022a, b). No DNA data are available. Mycogone cervina and M. perniciosa are currently recognised in the genus Hypomyces (Rogerson and Simms 1971). Gams (1983) reported Mycogone calospora with Sibirina synanamorph, while Samuels (1985) reported Hypomyces mycogones with a mycogone-like aleuriosporic asexual morph. However, Hypomyces mycogones has 3-celled aleuriosporic conidia while Mycogone is characterized by 2-celled conidia. The relationship between Hypomyces and Mycogone has not been confirmed by molecular data. New collections of Mycogone with molecular data are required to confirm the generic status and relationship with Hypomyces finally (copied from Perera et al. 2023).
Species illustrated in this entry:
Mycogone rosea Link
References:
Perera RH, Hyde KD, Jones EBG, Maharachchikumbura SSN et al. 2023 – Profile of Bionectriaceae, Calcarisporiaceae, Hypocreaceae, Nectriaceae, Tilachlidiaceae, Ijuhyaceae fam. nov., Stromatonectriaceae fam. nov. and Xanthonectriaceae fam. nov. Fungal Diversity 118, 95–271.
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