Fungalpedia – Note 1914, Myrmecridiaceae

 

Myrmecridiaceae Crous

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

Index Fungorum, Facesoffungi, MycoBank, GenBank.

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

Saprobic on decaying wood submerged in freshwater, leaf litter, on stem or leaves of herbaceous plants, occurring on soil and in house dust (Crous et al. 2015b, c, 2016b, 2018b, c, Peintner et al. 2016, Réblová et al. 2016a, Tibpromma et al. 2017b). Sexual morph: Ascomata immersed, solitary or aggregated, with subglobose to conical venter and ostiolate papilla as well as dark brown clypeus, glabrous. Ostiole periphysate. Peridium leathery, two-layered with hyaline to pale brown outer layer and subhyaline inner layer consisting of cells of textura angularis to textura prismatica. Paraphyses cylindrical, septate. Asci 8-spored, unitunicate, cylindrical, with a slender long pedicel, apex rounded. Ascospores uniseriate or overlapping uniseriate, hyaline, ellipsoidal, 3- septate, slightly verrucose, with granular content (Réblová et al. 2016a). Asexual morph: In vitro, Mycelium submerged, hyaline, thin-walled. Conidiophores erect from creeping hyphae, unbranched, straight or flexuous, brown at base and paler towards the apex, subcylindrical, smooth, septate. Conidiogenous cells differentiating from the apical region of conidiophore, integrated, polyblastic, cylindrical, subhyaline to brown, with conidium-bearing denticles along the conidiogenous axis. Conidia hyaline to pale brown, ellipsoid to obovoid to fusoid, solitary, smooth or verrucose, aseptate or septate, some species present a wing-like sheath (adapted from Crous et al. 2015c, 2016a, 2018b, c, Peintner et al. 2016, Tibpromma et al. 2017b).

Notes: Myrmecridiales and Myrmecridiaceae were established by Crous et al. (2015c) to accommodate Myrmecridium species based on the analyses of LSU sequence data. Myrmecridiaceae is the type family of Myrmecridiales (Sordariomycetes). Myrmecridiales is a monotypic order in the subclass Diaporthomycetidae (Crous et al. 2015c) and has phylogenetic affinities with Distoseptisporaceae and Magnaporthales in a multi-gene phylogenetic tree based on LSU, SSU, tef1 and rpb2 sequence data (Hongsanan et al. 2017). Myrmecridiaceae comprises two genera Myrmecridium (Arzanlou et al. 2007) and Neomyrmecridium (Crous et al. 2018b).

Type species: Myrmecridium Arzanlou, W. Gams & Crous.

 

References

Arzanlou M, Groenewald JZ, Gams W, Braun U, Crous PW. 2007 – Phylogenetic and morphotaxonomic revision of Ramichloridium and allied genera. Studies in Mycology 58, 57–93.

Crous PW, Schumacher RK, Wingfield MJ, Lombard L et al. 2015b – Fungal Systematics and Evolution: FUSE 1. Sydowia 67, 81–118.

Crous PW, Wingfield MJ, Guarro J, Hernández-Restrepo M et al. 2015c – Fungal Planet description sheets: 320–370. Persoonia 34, 167–266.

Crous PW, Wingfield MJ, Burgess TI, Hardy GE et al. 2016a – Fungal Planet description sheets: 469–557. Persoonia : Molecular Phylogeny and Evolution of Fungi 37, 218–403.

Crous PW, Wingfield MJ, Richardson DM, Le Roux JJ et al. 2016b – Fungal Planet description sheets: 400–468. Persoonia 36, 316–458.

Crous PW, Luangsa-Ard JJ, Wingfield M, Carnegie AJ et al. 2018b – Fungal Planet description sheets: 785–867. Persoonia: Molecular Phylogeny and Evolution of Fungi 41, 238–417.

Crous PW, Schumacher RK, Wingfield MJ, Akulov A et al. 2018c – New and Interesting Fungi. 1. Fungal Systematics and Evolution 1, 169–215.

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.

Peintner U, Knapp M, Fleischer V, Walch G et al. 2016 – Myrmecridium hiemale sp. nov. from snow-covered alpine soil is the first eurypsychrophile in this genus of anamorphic fungi. International Journal of Systematic and Evolutionary Microbiology 66, 2592–2598.

Réblová M, Fournier J, Štěpánek V. 2016a – Two new lineages of aquatic ascomycetes: Atractospora gen. nov. and Rubellisphaeria gen. et sp. nov., and a sexual morph of Myrmecridium montsegurinum sp. nov. Mycological Progress 15, 1–39.

Tibpromma S, Hyde KD, Jeewon R, Maharachchikumbura SSN et al. 2017b – Fungal diversity notes 491–602: taxonomic and phylogenetic contributions to fungal taxa. Fungal Diversity 83, 1–261.

 

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 5 March 2026

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