Fungalpedia – Note 3115, Neoacanthostigma

 

Neoacanthostigma Boonmee, Bhat & K.D. Hyde, Fungal Diversity 68 (1): 278 (2014).

Citation when using this data: Jian Ma et al. 2024 – Fungalpedia.

Index Fungorum, Faceoffungi, MycoBank, GenBank.

Classification: Tubeufiaceae, Tubeufiales, Incertae sedis, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi.

Notes: Neoacanthostigma was established by Boonmee et al. (2014) based on asexual-sexual morphological characteristics and molecular data. Index Fungorum (2024) records eight species of Neoacanthostigma. Among them, N. aquaticum, N. brunneisporum, N. filiforme, N. guangxiense, N. latisporum, N. septoconstrictum, and N. thailandicum were transferred to Acanthotubeufia and Berkleasmium based on molecular and morphological evidence (Lu et al. 2017c, 2018b). To date, the only accepted species in Neoacanthostigma is the type species, N. fusiforme (Lu and Kang 2020). The helicosporous asexual morph of N. fusiforme was found in sexual cultures (Boonmee et al. 2014), characterized by monoblastic, holoblastic, integrated, sympodial, cylindrical, hyaline, and smooth-walled conidiogenous cells, arising as lateral branches from creeping hyphae, sometimes truncate at the apex, and solitary, acrogenous, helicoid, indistinctly multi-septate, guttulate, hyaline conidia that are mostly rounded at the tips, with the conidial filament being loosely coiled (Boonmee et al. 2014; Lu et al. 2018b). Conidiophores are usually absent. The asexual Neoacanthostigma resembles Neohelicomyces but these two taxa are phylogenetically distinct genera within Tubeufiaceae (Lu et al. 2018b; Ma et al. 2023b).

Type species: Neoacanthostigma fusiforme Boonmee, Bhat & K.D. Hyde, Fungal Diversity 68 (1): 279 (2014).

Other accepted species: Species Fungorum – search Neoacanthostigma.

 

References

Boonmee S, Rossman AY, Liu JK, Li WJ et al. 2014 – Tubeufiales, ord. nov., integrating sexual and asexual generic names. Fungal Diversity 68:239–298.

Lu YZ, Boonmee S, Liu JK, Hyde KD et al. 2017c – Novel Neoacanthostigma species from aquatic habitats. Cryptogamie, Mycologie 38(2):169–190.

Lu YZ, Kang JC. 2020 – Research progress on helicosporous hyphomycetes. Journal of Fungal Research 18(4):304–314.

Lu YZ, Liu JK, Hyde KD, Jeewon R et al. 2018b – A taxonomic reassessment of Tubeufiales based on multi-locus phylogeny and morphology. Fungal Diversity 92:131–344.

Ma J, Xiao XJ, Liu NG, Boonmee S et al. 2023b – Morphological and multi-gene phylogenetic analyses reveal Pseudotubeufia gen. nov. and two new species in Tubeufiaceae from China. Journal of Fungi 9(7):742.

 

Entry by

Jian Ma, School of Food and Pharmaceutical Engineering, Guizhou Institute of Technology, Guiyang 550003, P.R. 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 4 September 2026

 

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