Fungalpedia – Note 1992, Thyridiaceae

 

Thyridiaceae. J.Z. Yue & O.E. Erikss.

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

Index Fungorum, Facesoffungi, MycoBank, GenBank

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

 

Hemibiotrophic or saprobic on woody substrates. Sexual morph: Ascomata stromatic. Stromatal tissue immersed, becoming erumpent to superficial, soft-textured, reddish brown to brightly pigmented. Ascomata immersed in stromata, globose, ostiolate. Ostioles periphysate, with short or long papilla or necks, sometimes convergent necks merging into one ostiole. Peridium composed of compressed rows of cells, externally brown, internally hyaline. Paraphyses filamentous, septate. Asci 8-spored, unitunicate, oblong cylindric, apical ring J-. Ascospores uniseriate, shades of brown, ellipsoid or biconoid, symmetric, 1-septate or muriform. Asexual morph: Coelomycetous or hyphomycetous, often developing on the edge of sexual morph stroma. Conidiomata immersed in stromata, irregular, multilocular and folded inside. Conidiogenous cells emerging from the interior of the cavity, bearing one or more conidiogenous cells. Conidiogenous cells enteroblastic, phialidic, hyaline. Conidia ellipsoidal, aseptate, small, hyaline. Holoblastic sympodial conidia also produced from hyphae. Sometimes ascospores produce primary conidia (adapted from Barr 1990b, Leuchtmann & Müller 1986, Maharachchikumbura et al. 2016b). 

Notes – In a phylogenetic and molecular clock analyses, Thyridiaceae showed a close relationship to Annulatascales and Myrmecridiales (Hyde et al. 2017a, Hongsanan et al. 2017, Senanayake et al. 2017a). However, only a single strain of the type genus has sequence data (Thyridium vestitum strain AFTOL-ID 172), and the ordinal placement remains uncertain in Diaporthomycetidae (Maharachchikumbura et al. 2015b, 2016b, Hongsanan et al. 2017). Maharachchikumbura et al. (2015, 2016b) and Wijayawardene et al. (2018a) accepted three genera in Thyridiaceae (Mattirolia, Pleurocytospora, and Thyridium). No sequence data are available for Pleurocytospora species. Mattirolia has been synonymised under Thyronectria (Nectriaceae) by Jaklitsch & Voglmayr (2014) based on an ex-epitype sequence of the generic type of Mattirolia, M. roseovirens. Here we follow the treatment of Jaklitsch & Voglmayr (2014).

 

Type genus: Thyridium Nitschke, Pyrenomyc. Germ. 1: 110 (1867).

Other accepted species: Species Fungorum – search Thyridiaceae.

 

References

Barr ME. 1990b – Prodromus to nonlichenized, pyrenomycetous members of class Hymenoascomycetes. Mycotaxon 39, 43–184.

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, Maharachchikumbura SSN, Hongsanan S, Samarakoon MC et al. 2017a – The ranking of fungi: a tribute to David L. Hawksworth on his 70th birthday. Fungal Diversity 84, 1–23.

Jaklitsch WM, Voglmayr H. 2014 – Persistent hamathecial threads in the Nectriaceae, Hypocreales: Thyronectria revisited and re-instated. Persoonia 33, 182–211.

Leuchtmann A, Müller E. 1986 – Über Thyridium vestitum und sein Anamorph (Ascomycetes). Botanica Helvetica 96, 283–287.

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

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.

Senanayake IC, Crous P, Groenewald J, Maharachchikumbura SSN et al. 2017a – Families of Diaporthales based on morphological and phylogenetic evidence. Studies in Mycology 86, 217–296.

Wijayawardene NN, Hyde KD, Lumbsch HT, Liu JK et al. 2018a – Outline of Ascomycota: 2017. Fungal Diversity 88, 167–263.

 

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 11 March 2026

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