Fungalpedia – Note 3227, Ascosacculus

 

Ascosacculus. J. Campb., J.L. Anderson & Shearer.

Citation when using this data: Bao DF et al. 2023 – Fungalpedia.

Index Fungorum, Facesoffungi, MycoBank, GenBank

Classification: Halosphaeriaceae, Microascales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi

Ascosacculus was introduced by Campbell et al. (2003) to accommodate two Halosarpheia species (A. aquaticus and A. heteroguttulatus) with A. aquaticus as the type species. The genus is known only by sexual moprs and it is characterized by immersed or superficial, globose to subglobose ascomata with long neck, 8-spored, thin-walled, early deliquescent asci, which lacking an apical pore and apical apparatus and fusiform to cylindrical, hyaline, 1-septate ascospores filled with many small  guttules and having a hamate appendage at each apex that unfurls to form long, threadlike, sticky appendages (Campbell et al. 2003).

The genus currently comprises three species, and all three were reported from freshwater habitats (Wong et al. 1998; Hyde et al. 1999; Campbell et al. 2003; Rosique- Gil et al. 2008; Luo et al. 2019). In this study, a new species A. thailandicus is introduced, which was collected from a freshwater habitat in Thailand.

Type species: Ascosacculus aquaticus (K.D. Hyde) J. Campb., J.L. Anderson & Shearer, Mycologia 95(3): 545 (2003)

Other accepted species: Species Fungorum – search Ascosacculus.

 

References

Campbell J, Anderson JL, Shearer CA 2003 – Systematics of Halosarpheia based on morphological and molecular data. Mycologia 95:530–552.

Luo ZL, Hyde KD, Liu JK, Maharachchikumbura SSN, et al. 2019 – Freshwater Sordariomycetes. Fungal Divers 99:451–660.

Rosique-Gil E, Gonzalez MC, Cifuentes J 2008 – New records of three freshwater ascomycetes from an urban lagoon of Tabasco. Mexico Mycotaxon 105:249.

Wong SW, Hyde KD, Jones EBG 1998 – Halosarpheia heteroguttulata sp. nov. from submerged wood in streams. Can J Bot 76:1857–1862.

 

Entry by

Bao Dan‑Feng, College of Agriculture and Biological Science, Dali University, Dali 671003, Yunnan, P.R. 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 50200, Thailand.

 

Published online 28 September 2026

 

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