Magnaporthales » Pseudohalonectriaceae


Pseudohalonectria Minoura & T. Muroi, Trans. Mycol. Soc. Japan 19(2): 132 (1978)

Diaporthomycetidae, Magnaporthales, Pseudohalonectriaceae, Pseudohalonectria

Index Fungorum number: IF 4437; Facesoffungi number: FoF 06274; 14 morphological species (Species Fungorum 2020); 5 species with sequence data.


Saprobic on wood and other plant material, commonly isolated in marine and terrestrial or freshwater habitats. Sexual morph: Ascomata erumpent to immerse with a protruding neck, cylindrical, periphysate necks, greenish yellow, bright yellow to brown. Neck conical, composed of parallel hyphae, outer hyphae outwardly directed, subglobose with enlarged ends, greenish yellow, periphysate. Peridium multi-layered. Paraphyses tapering towards the apex, thin-walled, attached to ascogenous hyphae. Asci 8-spored, unitunicate, cylindrical to clavate, with a J-, thimble-shaped, refractive apical ring. Ascospores overlapping uniseriate to biseriate, hyaline to slightly coloured and pale brown, pink/orange in mass in some species, cylindrical or ellipsoidal, straight to curved, usually multi-septate, constricted or not-constricted at the septa, smooth-walled. Asexual morph: Undetermined (description copied from Hyde et al. 2020).


Type species: Pseudohalonectria lignicola Minoura & T. Muroi, Trans. Mycol. Soc. Japan 19(2): 132 (1978)


Notes: Pseudohalonectria was introduced to accommodate P. lignicola (Minoura & Muroi 1978), without being assigned to an order or family (Minoura & Muroi 1978). Hongsanan et al. (2017) reviewed this genus and established a new family Pseudohalonectriaceae to accommodate this genus in Magnaporthales. The genus is characterized by bright yellow to brown ascomata, with long cylindrical, periphysate necks; unitunicate, cylindrical to clavate asci, with a J-, thimble-shaped, refractive apical rings and cylindrical, hyaline to slightly pigmented, and usually septate ascospores (Shearer 1989). Members in Pseudohalonectria are found in marine and terrestrial or freshwater habitats (Perera et al. 2016). In this study, Pseudohalonectria lutea is illustrated (notes copied from Hyde et al. 2020).


Species illustrated in this entry

Pseudohalonectria lutea Shearer




Hongsanan S, Maharachchikumbura SSN, Hyde KD, Samarakoon MC et al. 2017 – An updated phylogeny of Sordariomycetes based on phylogenetic and molecular clock evidence. Fungal Diversity 84, 25–41

Hyde KD, Norphanphoun C, Maharachchikumbura SSN, Bhat DJ et al. 2020 – Refined families of Sordariomycetes. Mycosphere 11, 305–1059

Minoura, K. & Muroi, T. (1978). Some freshwater ascomycetes from Japan. Trans. Mycol. Soc. Japan, 19: 129-134.

Perera RH, Maharachchikumbura SSN, Ariyawansa H, Bahkali AH et al. 2016 – Two new Pseudohalonectria species on beech cupules (Fagus sylvatica) and a new genus to accommodate P. suthepensis. Phytotaxa 278, 115–131

Shearer CA. 1989 – Pseudohalonectria (Lasiosphaeriaceae), an antagonistic genus from wood in freshwater. Canadian Journal of Botany 67, 1944–1955


About Sordariomycetes

The webpage Sordariomycetes provides an up-to-date classification and account of all genera of the class Sordariomycetes.


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