Fungalpedia – Note 2251, Mytilinidion

 

Mytilinidion Duby

Citation when using this data: Hongsanan S et al. 2020 – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1

Classification: Mytilinidiaceae, Mytilinidiales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi

Mytilinidion was established by Duby (1862) with an etymology from Mytilus, a genus of mussels. There are 36 recognised species, occurring on the Pinaceae, Cupressaceae, and Taxodiaceae (Lohman 1932, Zogg 1962, Speer 1986, Barr 1990b, Jayasiri et al. 2018). Mytilinidion species are characterised by yellow to reddish brown, ellipsoid, fusoid, obovoid to elongate, transversely septate, symmetric, ascospores, or scolecospores, thin-walled, globoid to conchate hysterothecia, with lateral walls more or less connivent and extended vertically to a cristate apex (Boehm et al. 2009a).

Type species: Mytilinidion aggregatum (DC.) Duby. 

≡ Hysterium aggregatum DC., Fl. franç., Edn 3 (Paris) 5/6: 168 (1815).

Other accepted species: Species Fungorum – search Mytilinidion.

 

image

 

Figure 1 – Mytilinidion didymospora (HKAS96319, isotype). a View of hysterothecia on host surface. b Section through hysterothecium. c Peridium. d, e Asci. f–i Ascospores. Scale bars: a = 500 µm, b = 200 µm, c = 10 µm, d, e = 20 µm, f–i = 5 µm.

 

References

Barr ME. 1990b – Some dictyosporous genera and species of Pleosporales in North America. Memoirs of the New York Botanical Garden 62, 1–92.

Boehm EWA, Mugambi G, Miller AN, Huhndorf S et al. 2009a – A molecular phylogenetic reappraisal of the Hysteriaceae, Mytilinidiaceae and Gloniaceae (Pleosporomycetidae, Dothideomycetes) with keys to world species. Studies in Mycology 64, 49–83.

Duby JE. 1862 – Mémoire sur la tribu des Hystérinées de la famille des Hypoxylées (Pyrénomycètes). Memoires de la Société de physique et d’histoire naturelle de Genève 16, 15–70.

Jayasiri SC, Hyde KD, Jones EBG, Peršoh D et al. 2018 – Taxonomic novelties of hysteriform Dothideomycetes. Mycosphere 9, 803–837.

Lohman ML. 1932 – Three new species of Mytilidion in the proposed subgenus Lophiopsis. Mycologia 24, 477–484.

Speer EO. 1986 – A propos de champignons du Brésil III. Mytilidion resinae sp. nov. (Hysteriales) et sa forme conidienne, Camaroglobulus resinae gen. et spec. nov. (Sphaeropsidales). Bulletin trimestriel de la Société mycologique de France 102, 97–100.

Zogg H. 1962 – Die Hysteriaceae s. str. und Lophiaceae, unter besonderer Berücksichtigung der mitteleuropäischen Formen. Beiträge zur Kryptogamenflora der Schweiz, Band 11, 1–190.

 

Entry by

Sinang Hongsanan, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Science and Oceanography, Shenzhen University, Shenzhen 518060, People’s Republic of China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50002, Thailand 

 

Published online 3 April 2026

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