Pleosporales » Pyrenochaetopsidaceae


Pyrenochaetopsis Gruyter, Aveskamp & Verkley, Mycologia 102(5): 1076 (2010).

Index Fungorum number: IF 514653; Facesoffungi number: FoF 08356, 16 morphological species (Species Fungorum, 2022), 10 species with molecular data.

Saprobic or pathogenic on host. Sexual morph: Unknown. Asexual morph: Conidiomata pycnidial, honey to citrine or olivaceous to olivaceous black, solitary to confluent, superficial or submerged, with a non-papillate or papillate ostiolar neck; pycnidial wall pseudoparenchymatous, setose, globose to subglobose. Conidiogenous cells phialidic, hyaline, discrete and integrated in septate, acropleurogenous conidiophores. Conidia aseptate, cylindrical to allantoid, guttulate (adapted from de Gruyter et al. 2010; Valenzuela-Lopez et al. 2018).


Type species: Pyrenochaetopsis leptospora (Sacc. & Briard) Gruyter, Aveskamp & Verkley


Notes: Pyrenochaetopsis was introduced by de Gruyter et al. (2010) with P. leptospora as type species. Pyrenochaetopsis is characterized by pycnidial, honey to citrine or olivaceous to olivaceous black conidiomata, phialidic, hyaline, discrete conidiogenous cells and aseptate, cylindrical to allantoid, guttulate conidia.  Pyrenochaetopsis leptospora was previously known as Pyrenochaeta leptospora but was not congeneric with the type of Pyrenochaeta, P. nobilis. Pyrenochaetopsis is morphologically and phylogenetically a distinct and type genus of Pyrenochaetopsidaceae. Molecular data available for Pyrenochaetopsis are LSU, SSU, ITS, RPB2 and β-tubulin.


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