Fungalpedia – Note 582, Repetobasidiellum

 

Repetobasidiellum J. Erikss. & Hjortstam

Citation when using this data: Zhang et al. 2025 (in prep.) – Fungalpedia, Basidiomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1

Classification: Hydnaceae, Cantharellales, Incertae sedis, Agaricomycetes, Agaricomycotina, Basidiomycota, Fungi

The monotypic genus Repetobasidiellum was established by Eriksson et al. (1981), and was phylogenetically placed in Hydnaceae (Cantharellales, Agaricomycetes, Basidiomycota) based solely on morphology (Kirk et al. 2008; Wijayawardene et al. 2022; Hyde et al. 2024c). Repetobasidiellum is represented by the single species R. fusisporum, which is characterized by resupinate, adnate, effused, ceraceous to crustaceous basidiomes, smooth, continuous conidiophores, monomitic hyphal system with clamps, uniform, 4-sterigmate basidia produced by internal repetition from old basidia, and subfusiform and smooth, acyanophilous basidiospores. It differs from the morphologically similar genus Repetobasidium in having uniform basidia and dendrohyphidia (Eriksson et al. 1981). Repetobasidiellum fusisporum was found on several fern hosts, including Athyrium filix-femina (Woodsiaceae), Dryopteris dilatata (Dryopteridaceae), Dryopteris sp. (Dryopteridaceae), Matteuccia struthiopteris (Woodsiaceae) in northern Europe (Kirk et al. 2008; Farr et al. 2021).

Type species: Repetobasidiellum fusisporum J. Erikss. & Hjortstam.

Other accepted species: Species Fungorum – search Repetobasidiellum.

 

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Figure 1 – Repetobasidiellum fusisporum. a Hyphae and fruit body. b Basidia and basidioles. c Basidiospores. Redrawn from the website of Natura Mediterraneo (https://www.naturamediterraneo.com/forum/topic.asp?TOPIC_ID=68179&whichpage=2).

 

References

Eriksson O 1981 – The families of bitunicate ascomycetes. Nordic Journal of Botany 1:800–800.

Farr DF, Rossman AY, Castlebury LA 2021 – Fungal Databases, United States National Fungus Collections, ARS, USDA. Retrieved July 1, 2022.

Kirk PM, Cannon PF, Minter DW, Stalpers JA 2008 – Dictionary of the fungi. 10th Edition, Wallingford, CABI.

Hyde KD, et al. 2024c – The 2024 outline of fungi and fungus-like taxa. Mycosphere (in press).

Wijayawardene NN, Hyde KD, Dai DQ, Sánchez-García M, Goto BT, Saxena R, Erdoğdu M, Selçuk F, Rajeshkumar KC, Aptroot A, Błaszkowski J, Boonyuen N, da Silva GA, de Souza FA, Dong W, Ertz D, Haelewaters D, Jones EBG, Karunarathna SC, Kirk PM, Kukwa M, Kumla J, Leontyev DV, Lumbsch HT, Maharach chikumbura SSN, Marguno F, Martínez-Rodríguez P, Mešić A, Monteiro JS, Oehl F, Pawłowska J, Pem D, Pfliegler WP, Phil lips AJL, Pošta A, He MQ, Li JX, Raza M, Sruthi OP, Suetrong S, Suwannarach N, Tedersoo L, Thiyagaraja V, Tibpromma S, Tkalčec Z, Tokarev YS, Wanasinghe DN, Wijesundara DSA, Wimalaseana SDMK, Madrid H, Zhang GQ, Gao Y, Sánchez Castro I, Tang LZ, Stadler M, Yurkov A, Thines M 2022 – Out line of Fungi and fungus-like taxa—2021. Mycosphere 13:53–453.

 

Entry by 

Jing-Yi Zhang, School of Food and Pharmaceutical Engineering, Guizhou Institute of Technology, Guiyang, 550025, People’s Republic of China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand, School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand, Guizhou Key Laboratory of Agricultural Microbiology, Guizhou Academy of Agricultural Sciences, Guiyang, 550009, People’s Republic of China.

 

Published online 11 June 2025

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