Fungalpedia – Note 383, Helicodochium

 

Helicodochium J.S. Monteiro, R.F. Castañeda, A.C. Cruz & Gusmão

Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Ascomata.

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

Classification: Tubeufiaceae, Tubeufiales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi.

Helicodochium was established by Monteiro et al. (2014) to accommodate the type species Helicodochium amazonicum based on morphological studies. Wijayawardene et al. (2017) referred to this genus as the Ascomycota genus incertae sedis. Based on morphological and phylogenetic evidence, Lu et al. (2018) accepted Helicodochium as a genus of Tubeufiaceae and introduced H. aquaticum, as the second species. Helicodochium is characterized by sporodochial conidiomata, apothecium-like, dry, macronematous conidiophores, and branched, septate, and monoblastic conidiogenous cells that produce helicoid, multiseptate, smooth, and hyaline conidia (Monteiro et al. 2014). 

            Type species: Helicodochium amazonicum J.S. Monteiro, R.F. Castañeda, A.C. Cruz & Gusmão

Other accepted species: Species Fungorum – search Helicodochium

Figure 1 – Helicodochium amazonicum. a Sporodochia on the substratum. b Conidia attached to the conidiogenous cells. c Conidia. Scale bars: a = 100 µm, b, c = 20 µm. Redrawn from Monteiro et al. (2014).

 

References

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

Monteiro JS, Gusmão LFP, Castañeda-Ruiz RF. 2014 – Helicodochium, a new microfungus from submerged wood in Brazil. Mycotaxon 127: 5–9.

Wijayawardene NN, Hyde KD, Tibpromma S, Wanasinghe DN, et al. 2017 – Towards incorporating asexual fungi in a natural classification: checklist and notes 2012–2016. Mycosphere 8: 1457–1555.

 

Entry by

Du TY, Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan 655011, 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.

 

(Edited by Saowaluck Tibpromma, Samaneh Chaharmiri-Dokhaharani, & Achala R. Rathnayaka)

 

Published online 26 November 2024

 

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