Ascomycota, genera » Ascomycota, incertae sedis


Metazythia Petr., Sydowia 4(1-6): 373 (1950)

Index Fungorum: IF8913 

Ascomycota, genera incertae sedis


Hyperparasitic on fungal stroma on Chusquea serrulata (Poaceae). Sexual morph: undetermined. Asexual morph: Conidiomata dark brown, pycnidial, solitary to gregarious, immersed to erumpent, globose to subglobose, unilocular or sometimes multilocular, glabrous. Ostiole single to each pycnidium, circular, centrally located. Conidiomatal wall composed of thin-walled, pale brown cells of textura angularis. Conidiophores arising from the inner layers of conidiomal wall, hyaline, branched, septate, smooth-walled. Conidiogenous cells hyaline, enteroblastic, phialidic, doliiform to ampulliform, determinate, smooth-walled, with markedly periclinal thickened, minute collarette and aperture. Conidia hyaline, cylindrical to fusiform, occasionally irregular, unicellular, smooth-walled, biguttulate (Sutton 1980).


Type species: Metazythia caespitosa Petr., Sydowia 4(1-6): 373 (1950)


Notes: Metazythia is monotypic. The conidiomata, conidiophores, conidiogenous cells and conidia of Metazythia resemble phoma-like taxa, such as Allophoma, Ascochyta, Boeremia, Didymella, Phoma. and the genus may be congenic with some of them. However, no molecular data is available and fresh collections of M. caespitosa are needed.


Distribution: Ecuador(Sutton 1980).






Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.



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