Elongaticollum
Elongaticollum Tennakoon, C.H. Kuo & K.D. Hyde, in Tennakoon et al., MycoKeys 70: 59–88 (2020).
Index Fungorum number: IF 557486; Facesoffungi number: FoF 07849, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.
Saprobic on dead leaves of Hedychium coronarium J. Koenig. Sexual morph: Unknown. Asexual morph: Coelomycetous. Conidiomata pycnidial, solitary, superficial, dark brown to black, obpyriform, papillate. Neck elongate, dark brown, usually straight, but sometimes slightly curved. Conidiomatal wall composed of 4–5 layers of light brown cells, arranged in textura angularis. Conidiophores reduced to conidiogenous cells. Conidiogenous cells hyaline, aseptate, smooth, ampulliform, arising from the inner cell wall of the apex. Conidia oval to oblong, smooth and thin-walled, hyaline, aseptate, with 1–2-minute guttules (adapted from Tennakoon et al. 2020).
Type species: Elongaticollum hedychii Tennakoon, C.H. Kuo & K.D. Hyde
Notes: Elongaticollum was introduced by Tennakoon et al. (2020) with E. hedychii as type species. Elongaticollum is characterised by dark brown to black, superficial, obpyriform, pycnidial conidiomata with distinct elongate necks with a globose base and oval to oblong, hyaline, aseptate conidia. Elongaticollum is a well-supported distinct genus in Phaeosphaeriaceae. Molecular markers available for Elongaticollum include ITS, LSU, SSU and TEF-1.
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