Fungalpedia – Note 3112, Dematiohelicoma

 

Dematiohelicoma Y.Z. Lu, J.C. Kang & K.D. Hyde, Fungal Diversity 92: 157 (2018).

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: Dematiohelicoma was established by Lu et al. (2018b), with D. pulchrum as the type species based on molecular and morphological data. Currently, Dematiohelicoma comprises two species: D. perelegans and D. pulchrum (Lu et al. 2018b; Index Fungorum 2024). These two asexual species were found in unidentified decaying bark or wood in terrestrial habitats (Linder 1929; Hughes 1978; Ruíz CR et al. 1998; Tsui and Berbee 2006; Zhao et al. 2007). Dematiohelicoma resembles Helicoma in its conidial morphology but can be easily distinguished by its reddish-brown conidia with dark brown conidial septa (Lu et al. 2018b). Phylogenetically, Dematiohelicoma is a distinct genus within Tubeufiaceae, and is distant from Helicoma (Lu et al. 2018b; Ma et al. 2023b).

Type species: Dematiohelicoma pulchrum (R.F. Castañeda & Guarro) Y.Z. Lu & K.D. Hyde, Fungal Diversity 92: 158 (2018).

Other accepted species: Species Fungorum – search Dematiohelicoma.

 

References

Hughes SJ. 1978 – New Zealand fungi 25. Miscellaneous species. New Zealand Journal of Botany 16(3):311–370.

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

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.

Ruíz CR, Kendrick B, Guarro J, Mayayo E. 1998 – New species of Dictyochaeta and Helicoma from rain forests in Cuba. Mycological Research 102(1):58–62.

Tsui CKM, Berbee ML. 2006 – Phylogenetic relationships and convergence of helicosporous fungi inferred from ribosomal DNA sequences. Molecular Phylogenetics and Evolution 39(3):587–597.

Zhao G, Liu X, Wu W. 2007 – Helicosporous hyphomycetes from China. Fungal Diversity 26:313–524.

 

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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