Pleosporales » Pleosporales, genus incertae sedis


Mangifericomes E.F. Yang & Tibpromma, in Yang et al., Journal of Fungi 8(no. 152): 10 (2022).

 Index Fungorum number: IF 559283; Facesoffungi number: FoF10595, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.

Saprobic on dead or decaying branch, leaves or wood of terrestrial. Sexual morph: Ascomata immersed or semi-immersed, globose to subglobose, sometime visible apical black neck effuses to host surface, dark brown to black, with or without ostiolate. Peridium comprised by thick, dark-brown walled cells of textura angularis to globosa. Hamathecium comprises filiform, hyaline, thick-walled, septate, branched, with some oil droplets, pseudoparaphyses. Asci 8-spored, bitunicate, cylindrical-clavate, pedicellate, apically rounded with an ocular chamber. Ascospores muriform, ellipsoid, often have one widened apical part in each, 7–11-transversely transversally septate, and 5–8 longitudinal septa, slightly or strongly constricted at the septum, wrapped by a gelatinous sheath. Asexual morph: Unknown (adapted from Yang et al. 2022).

 Type species: Mangifericomes hongheensis E.F. Yang & Tibpromma

Notes: Mangifericomes is characterised by ellipsoid and muriform, pale brown to brown ascospores, surrounded by a gelatinous sheath. Mangifericomes resembles Murispora, Phaeoseptum, Halojuella, Julella and Pleospora in having muriform, yellow-brown to dark brown ascospores, with or without a sheath. Mangifericomes is unique and differs from these genera in having 7–11-transverse septa and 5–8 longitudinal septa in each ascospore, oblong, more obtuse and flatter at both ends, and the pseudoparaphyses are scarce, short-branched, and thick-walled. Based on the multi-gene analyses of ITS, LSU, SSU, rpb2 and tef1-α, Mangifericomes is a well separated genus from other genera/families in Pleosporales with high statistical support (Yang et al. 2022). The familial placement of Mangifericomes is not known and the genus is currently in Pleosporales genera incertae sedis. Molecular markers available for Mangifericomes are ITS, LSU, SSU, RPB2 and TEF-1.



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