Fungalpedia – Note 3181, Helicomyxa

 

Helicomyxa R. Kirschner & Chee J. Chen, Studies in Mycology 50 (2): 338 (2004).

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

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

Classification: Hyaloriaceae, Auriculariales, Auriculariomycetidae, Agaricomycetes, Agaricomycotina, Basidiomycota, Fungi.

Notes: Helicomyxa was established by Kirschner and Chen (2004), with H. everhartioides as the type species based on morphology and the phylogenetic analyses of LSU sequence data. Currently, the sporodochial hyphomycete Helicomyxa comprises only one species, H. everhartioides, which was found on dead wood in a terrestrial habitat in the Taiwan Province of China (Kirschner and Chen 2004). Helicomyxa is characterized by having clamped conidiophores, hemi-circinate, hyaline, and aseptate conidia (Kirschner and Chen 2004). Helicomyxa is similar to species of Delortia and Everhartia, differs by the presence of clamp conidiophores (Linder 1929; Goh and Hyde 1997; Yanna et al. 2000). Furthermore, only Everhartia phoenicis produces aseptate conidia (Yanna et al. 2000). It is to be noted that H. everhartioides can only be cultivated in pure cultures in the presence of a species of Phaeoacremonium. (Kirschner and Chen 2004).

Type species: Helicomyxa everhartioides R. Kirschner & Chee J. Chen, Studies in Mycology 50 (2): 339 (2004).

Other accepted species: Species Fungorum – search Helicomyxa.

Figure 1 – (a) Drepanoconis larviformis (redrawn from Piepenbring et al. (2010)), a Host cells with basidia and other fungal cells. b Mature basidiospores; (b) Helicocephalum sarcophilum (redrawn from Thaxter (1891)); (c) Helicomyxa everhartioides (redrawn from Seifert et al. (2011)).

 

References

Goh TK, Hyde KD. 1997 – Delortia palmicola and two new species from wood submerged in a freshwater stream in Australia. Mycological research 101(1):42–46.

Kirschner R, Chen CJ. 2004 – Helicomyxa everhartioides, a new helicosporous sporodochial hyphomycete from Taiwan with relationships to the Hyaloriaceae (Auriculariales, Basidiomycota). Studies in Mycology 50:337–342.

Linder DH. 1929 – A monograph of the helicosporous fungi imperfecti. Annals of the Missouri Botanical Garden 16(3):227–388.

Yanna, Ho W, Goh T, Hyde KD. 2000 – A new species of Everhartia associated with leaf spots of Phoenix hanceana from Hong Kong. Botanical Journal of the Linnean Society 134(3):465–470.

 

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 18 September 2026

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