Fungalpedia – Note 764, Cancellidiaceae

 

Cancellidiaceae K.D. Hyde & Hongsanan

Citation when using this data: Karimi O et al. 2025 (in prep.) – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank.

Classification: Cancellidiales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi 

Hyde et al. (2021) established the family Cancellidiaceae to accommodate the asexual genus Cancellidium (Ca.) within Cancellidiales, based on a divergence time analysis, which indicated a stem age of 137 MYA. Subsequently, Dong et al. (2021) introduced Obliquiminima as the first sexual morph genus in this family. Currently, Cancellidiaceae comprises two genera: Cancellidium, with eight species and Obliquiminima, with a single species (Dong et al. 2021, da Silva & Gusmão 2024). Species of Cancellidiaceae are reported as saprobes on wood and twigs in freshwater habitats (Dong et al. 2021, Hyde et al. 2021). The sexual morph is characterized by small, scattered, superficial, ellipsoidal to subglobose, black, coriaceous, ostiolate ascomata with a lateral neck. Paraphyses are dense, hypha-like, septate, unbranched, and hyaline. Asci are unitunicate, 8-spored, narrowly obclavate, slightly truncate at the apex, sessile, and feature a small, refractive apical ring. Ascospores are uni- to biseriate, oval to narrowly ellipsoidal, straight, aseptate, guttulate, hyaline, thin-walled, smooth, and surrounded by a thin gelatinous sheath. The asexual morph is distinguished by unique, large, flattened, fan-shaped conidia (Dong et al. 2021).

Type genus: Cancellidium Tubaki, Trans. Mycol. Soc. Japan 16(4): 357 (1975).

 

References

da Silva PR, Gusmão LFP. 2024. New species and new records of aquatic asexual ascomycetes from estuarine beaches of the Brazilian Amazon. New Zealand Journal of Botany. 1–14.

Dong W, Hyde KD, Jeewon R, Doilom M, et al. 2021 – Towards a natural classification of Annulatascaceae-like taxa II: introducing five new genera and eighteen new species from freshwater. Mycosphere 12, 1–88.

Hyde KD, Bao DF, Hongsanan S, Chethana KT et al. 2021 – Evolution of freshwater Diaporthomycetidae (Sordariomycetes) provides evidence for five new orders and six new families. Fungal Diversity. 107, 71–105.

 

Entry by

Omid Karimi, State Key Laboratory of Discovery and Utilization of Functional Components in Traditional Chinese Medicine & School of Pharmaceutical Sciences, Guizhou Medical University, Guian New District, Guizhou 550004, 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

 

Published online 28 July 2025

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