Pleosporales » Lophiostomataceae

Pseudopaucispora

Pseudopaucispora A. Hashim., K. Hiray. & Kaz. Tanaka, in Hashimoto et al., Stud. Mycol. 90: 175 (2018).

 Index Fungorum number: IF 823143; Facesoffungi number: FoF 08281; 1 morphological species (Species Fungorum 2022), 1 species with molecular data.

Saprobic on host. Sexual morph: Ascomata scattered, immersed, subglobose. Ostiolar neck elongated, laterally compressed. Peridium composed of rectangular, brown cells. Pseudoparaphyses numerous, septate, branched and anastomosed. Asci bitunicate, fissitunicate, cylindrical to clavate, 8-spored. Ascospores fusiform, brown, uniseptate, smooth, with a narrow bipolar sheath. Asexual morph: Conidiomata pseudopycnidial, globose to cylindrical, sometimes deformed, confluent, multiloculate, scattered, semi-immersed, black. Ostiolar neck papillate. Peridium composed of rectangular, brown cells. Conidiophores absent. Conidiogenous cells holoblastic, ampliform to cylindrical, hyaline, smooth. Conidia cylindrical with rounded ends, hyaline, smooth, aseptate, guttulate when young (adapted from Hashimoto et al. 2018).

 Type species: Pseudopaucispora brunneospora A. Hashim., K. Hiray. & Kaz. Tanaka

Notes: Pseudopaucispora is characterised by subglobose ascomata, cylindrical to clavate asci, and fusiform, brown, uniseptate ascospores. The asexual morph is characterised by pseudopycnidial, globose to cylindrical conidiomata, ampulliform to cylindrical, hyaline conidiogenous cells and cylindrical conidia with rounded ends. Pseudopaucispora pseudoarmatispora was previously known as Lophiostoma pseudoarmatisporum. Li et al. (2016) placed Lophiostoma pseudoarmatisporum in Lophiostoma. Pseudopaucispora can be differentiated from Lo. bipolare complex in having brown ascospores, surrounded by a sheath lacking a lateral pad-like structure. Pseudopaucispora is a distinct and well-separated genus in Lophiostomataceae with good support. Molecular markers available for Pseudopaucispora are ITS, LSU, SSU, BTUB, RPB2 and TEF-1.

 

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