Fungalpedia – Note 2491, Pseudohelicomyces

 

Pseudohelicomyces Y.Z. Lu, J.K. Liu & K.D. Hyde

Citation when using this data: Dong W et al. 2020 – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank.

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

Pseudohelicomyces was proposed by Valenzuela and Garnica (2000) with P. albus Garnica & E. Valenz. as the type species. Lu et al. (2018b) formally introduced this genus to accommodate two new species and three new combinations based on morphology and multi-gene phylogenetic analyses, and designed P. talbotii as the type. We follow Jayasiri et al. (2019) and conserve Pseudohelicomyces Y.Z. Lu, J.K. Liu & K.D. Hyde (Tubeufiaceae) against Pseudohelicomyces Garnica & Valenz. (Hymenogastraceae).

Three species of Pseudohelicomyces were found from freshwater habitats, viz. P. aquaticus Y.Z. Lu et al., P. hyalosporus Y.Z. Lu et al. and P. talbotii. Pseudohelicomyces hyalosporus was formerly named as Helicomyces roseus that comprises six isolates, of which five (Luo et al. 2017) are from freshwater habitats and the other (CBS 283.51) from terrestrial habitats was wrongly identified (Tsui et al. 2006b). The specimen HKAS 83995 of Luo et al. (2017) was designated as the holotype of P. hyalosporus by Lu et al. (2018b). Pseudohelicomyces talbotii was found from freshwater habitats by Lu et al. (2018b), with LSU, ITS, TEF and RPB2 sequence data.

Type species: Pseudohelicomyces talbotii (Goos) Y.Z. Lu & K.D. Hyde

Other accepted species: Species Fungorum – search Pseudohelicomyces.

 

References

Garnica S, Schön ME Abarenkov K, Riess K, Liimatainen K, Niskanen T, Dima B, Soop K, Frøslev TG, Jeppesen TS, Peintner U, Kühnert-Finkernagel R, Brandrud TE, Saar G, Oertel B, Ammirati J 2016 – Determining threshold values for barcoding fungi: lessons from Cortinarius (Basidiomycota), a highly diverse and widespread ectomycorrhizal genus. FEMS Microbiol Ecol 92: 1–16.

Jayasiri SC, Hyde KD, Jones EBG, McKenzie EHC, Jeewon R, Phillips AJL, Bhat DJ, Wanasinghe DN, Liu JK, Lu YZ, Kang JC, Xu J, Karunarathna SC 2019 – Diversity, morphology and molecular phylogeny of Dothideomycetes on decaying wild seed pods and fruits. Mycosphere 10:1–186.

Lu YZ, Liu JK, Hyde KD, Jeewon R, Kang JC, Fan C, Boonmee S, Bhat DJ, Luo ZL, Lin CG, Eungwanichayapant PD 2018b – A taxonomic reassessment of Tubeufiales based on multi-locus phylogeny and morphology. Fungal Divers 92:131–344.

Luo ZL, Bhat DJ, Jeewon R, Boonmee S, Bao DF, Zhao YC, Chai HM, Su HY, Su XJ, Hyde KD 2017 – Molecular phylogeny and morphological characterization of asexual fungi (Tubeufiaceae) from freshwater habitats in Yunnan, China. Cryptogam Mycol 38:27–53.

Tsui CKM, Sivichai S, Berbee ML 2006b – Molecular systematics of Helicoma, Helicomyces and Helicosporium and their teleomorphs inferred from rDNA sequences. Mycologia 98:94–104.

 

Entry by

Wei Dong, Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China, Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, China

 

Published online 22 May 2026

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