Fungalpedia – Note 3151, Circinoconis

 

Circinoconis Boedijn, Annals of the Royal Botanic Garden Calcutta 150: 209 (1942).

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

Index Fungorum, Faceoffungi, MycoBank, GenBank.

Classification: Incertae sedis, Incertae sedis, Incertae sedis, Incertae sedis, Pezizomycotina, Ascomycota, Fungi.

Notes: Circinoconis was established by Boedijn (1942) to accommodate a single species, C. paradoxa, as the type species based on morphological evidence. Circinoconis paradoxa was found successively on Calamus, Flagellaria indica, Imperata arundinacea and Plectocomia elongate in India, Indonesia, Malaysia and Thailand (Boedijn 1942; Pinnoi et al. 2009; Hernández 2013). Circinoconis differs from all other groups of helicosporous hyphomycetes by its unique morphological features, such as trichotomously apically branched conidiophores and gourd-like conidia (Linder 1929; Zhao et al. 2007; Lu et al. 2018b).

Type species: Circinoconis paradoxa Boedijn, Annals of the Royal Botanic Garden Calcutta 150: 209 (1942).

Other accepted species: Species Fungorum – search Circinoconis.

 

Figure 1 – (a) Circinoconiopsis amazonica (redrawn from Seifert et al. (2011)); (b) Circinoconis paradoxa (redrawn from Seifert et al. (2011)); (c) Clathroconium arachnicola (redrawn from Seifert et al. (2011)); (d) Curculiospora sydowii (redrawn from Arnaud (1954)).

 

References

Boedijn K. 1942 – Circinoconis, a new genus of Dematiaceae (Fungi Im-perfectae). 150th Anniversary Volume, Royal Botanic Garden, Calcutta: 209–211.

Hernández G. 2013 – New or rare fungi from eastern Amazonia. 1. Circinoconiopsis amazonica gen. and sp. nov. Mycotaxon 123:107–111.

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.

Pinnoi A, Phongpaichit S, Hyde KD, Jones EG. 2009 – Biodiversity of fungi on Calamus (Palmae) in Thailand. Cryptogamie, Mycologie 30(2):181–190.

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 10 September 2026

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