Fungalpedia – Note 763, Longivarius

 

Longivarius W. Dong, H. Zhang & K.D. Hyde

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

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

Classification: Annulatascaceae, Annulatascales, Diaporthomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi 

Annulatascus aquatorbae was originally introduced by Boonyuen et al. (2012) based on a collection from submerged wood test blocks of Erythrophleum teysmannii in Thailand. Later, Dong et al. (2021) studied annulatascaceae-like taxa and revealed that Annulatascus aquatorbae formed a distinct clade, separate from other Annulatascus species, based on the combined phylogenetic analyses of LSU, ITS, tef-1α, and rpb2. Consequently, they established a new genus, Longivarius (Lo.), to accommodate Lo. aquatorbae. Currently, there is only one species in this genus listed in Species Fungorum (2024). The type species Lo. aquatorbae has been reported from peat swamp forests in Narathiwat, Thailand (Boonyuen et al. 2012). In this study, we introduce Lo. narathiwatensis as a novel species, found on submerged rachides of Eleiodoxa conferta in the peat swamp forest of Narathiwat, Thailand

Type species: Longivarius aquatorbae (Boonyuen & Sri-indr.) W. Dong, H. Zhang & K.D. Hyde, Mycosphere 12(1): 21 (2021).

Other accepted species: Species Fungorum – search Longivarius.

 

image

 

Figure 1 – Longivarius narathiwatensis (MFLU 24-0494, holotype). a Host. b Colonies on the host substrate. c−g Conidia, conidiophores and conidiogenous cells. h Colonies on the PDA. Scale bars: b = 200 μm, c = 25 μm, e, f = 15 μm, g = 10 μm.

 

References

Boonyuen N, Sri-Indrasutdhi V, Suetrong S, Sivichai S, et al. 2012 – Annulatascus aquatorba sp. nov., a lignicolous freshwater ascomycete from Sirindhorn Peat Swamp Forest, Narathiwat, Thailand. Mycologia 104, 746–757.

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.

 

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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