Fungalpedia – Note 120 Pirozynskiomyces


Pirozynskiomyces Hern.-Restr. & Crous

Citation when using this entry: Norphanphoun et al., in prep – Fungalpedia, genera and higher taxa of 2022. Mycosphere.

Index Fungorum, FacesoffungiMycoBankGenBank, Fig 1.

Based on multi-locus analysis (ITS, LSU, rpb2) and morphological studies, Hernández-Restrepo et al. (2022) introduced Pirozynskiomyces (Coniocessiaceae) to accommodate P.brasiliensis and P. sinensis (≡ Circinotrichum sinense). Pirozynskiomyces with P. brasiliensis as the type was collected from a rotten leaf in Brazil, and P. sinensis was found on dead foliage of Camellia cuspidata in China (Hernández-Restrepo et al. 2022). Pirozynskiomyces is known only from its asexual morph and is characterized by simple or branched setae and conidiogenous cells that produce falcate, hyaline conidia with a cellular appendage at the apex (Li et al. 2017, Hernández-Restrepo et al. 2022). Phylogenetic evidence obtained from the analysis of ITS, LSU, and rpb2 sequences of Xylariales show it as a distinct lineage and grouped within Coniocessiaceae (Hernández-Restrepo et al. 2022). Therefore, based on phylogenetic inferences, Circinotrichum sinense was transferred to Pirozynskiomyces (Hernández-Restrepo et al. 2022). The taxonomic placement of Pirozynskiomyces is in Coniocessiaceae (Xylariales, Sordariomycetes).

Type species: Pirozynskiomyces brasiliensis Hern.-Restr. & Crous

Other accepted species: 

Pirozynskiomyces sinensis (D.W. Li, Neil P. Schultes, Jing Y. Chen, Yi X. Wang & R.F. Castañeda) Hern.-Restr. & Crous



Figure 1 Pirozynskiomyces brasiliensis (a, e–f, g) and P. sinensis (b-c, h) redrawn from Li et al. (2017), and Hernández-Restrepo et al. (2022) a, b Setae, c Apical portion of seta showing percurrent extension (arrow), d, e, f Conidiogenous cells (d at the arrow),  g, h Conidia. Scale bars = 10 µm.



Hernández-Restrepo M, Decock CA, Costa MM et al. 2022 – Phylogeny and taxonomy of CircinotrichumGyrothrixVermiculariopsiella and other setose hyphomycetes. Persoonia 49, 99 –135.

Li DW, Schultes NP, Chen JY, Wang YX, Castañeda-Ruiz RF. 2017 – Circinotrichum sinense, a new asexual fungus from Hubei. China. Botany 951099–1108.


Entry by

Norphanphoun C., Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand and Mushroom Research Foundation, 128 M.3 Ban Pa Deng T. Pa Pae, A. Mae Taeng, Chiang Mai 50150, Thailand


(Edited by Kevin D. Hyde)