Fungalpedia – Note 1945, Pseudohalonectriaceae

 

Pseudohalonectriaceae Hongsanan & K.D. Hyde

Citation when using this data: Hyde KD et al. 2020 – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank.

Classification: Incertae sedis, Sordariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi

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 (adapted from Shearer & Zare-Maivan 1988, Hyde et al. 1999b).

Notes: Pseudohalonectriaceae was introduced in Magnaporthales by Hongsanan et al. (2017) and comprises a single genus. Pseudohalonectria was previously placed in Lasiosphaeriaceae, Sordariales supported by the preliminary phylogenetic analysis of SSU sequence data by Chen et al. (1999). Shearer et al. (1999) transferred Pseudohalonectria to Magnaporthaceae. Klaubauf et al. (2014) found that Pseudohalonectria clustered with species of Magnaporthaceae, Pyriculariaceae and Ophioceraceae in the Magnaporthales in their phylogenetic study of Pyriculariaceae. Similar results were obtained by Maharachchikumbura et al. (2015, 2016b), and they maintained Pseudohalonectria in Magnaporthales genera, incertae sedis.

Type genus: Pseudohalonectria Minoura & T. Muroi.

 

References

Chen W, Shearer CA, Crane JL. 1999 – Phylogeny of Ophioceras spp. based on morphological and molecular data. Mycologia 91, 84–94.

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, Taylor JE, Fröhlich J. 1999b – Two new species of Pseudohalonectria from palms. Mycologia 91, 520–524.

Klaubauf S, Tharreau D, Fournier E, Groenewald JZ et al. 2014 – Resolving the polyphyletic nature of Pyricularia (Pyriculariaceae). Studies in Mycology 79, 85–120.

Maharachchikumbura SSN, Hyde KD, Jones EBG, McKenzie EHC et al. 2015 – Towards a natural classification and backbone tree for Sordariomycetes. Fungal Diversity 72, 199–301.

Maharachchikumbura SSN, Hyde KD, Jones EBG, McKenzie EHC et al. 2016b – Families of Sordariomycetes. Fungal Diversity 79, 1–317.

Shearer A, Zare-Maivan H. 1988 – In vitro hyphal interactions among wood- and leaf-inhabiting Ascomycetes and Fungi Imperfecti from freshwater habitats. Mycologia 80, 31–37.

Shearer CA, Crane JL, Chen W. 1999 – Freshwater Ascomycetes: Ophioceras species. Mycologia 91, 145–156.

 

Entry by

Kevin David Hyde, Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, P.R. China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Mushroom Research Foundation, 128 M.3 Ban Pa Deng T. Pa Pae, A. Mae Taeng, Chiang Mai 50150, Thailand, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, P.R. China, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand, World Agroforestry Centre, East and Central Asia, Kunming 650201, Yunnan, P.R. China

 

Published online 6 March 2026

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