Fungalpedia – Note 967, Gyrothrix
Gyrothrix (Corda) Corda
Citation when using this data: de Silva NI et al. 2022 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1
Classification: Gyrotrichaceae, Xylariales, Xylariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Gyrothrix was introduced by Corda 1842 and typified by G. podosperma. These species are hyphomycetous, mostly saprobes (Bhardwaj et al. 2019). The genus is characterized by superficial, effuse, grayish-brown velvety sporodochial or stromatic colonies, repeatedly branched, dark brown or olivaceous brown, erect setae, micronematous flexuous, irregularly branched and anastomosing subhyaline to pale olivaceous brown, smooth conidiophores and polyblastic, discrete, conidiogenous cells. Conidia are initially arranged in a ring just below the apex of the conidiogenous cell and later detached in bundles and become simple, hyaline, acerose, falcate, cylindrical or fusiform (Corda 1842). Becerra-Hernández et al. (2016) indicated that Gyrothrix as a polyphyletic genus of Xylariales based on molecular phylogenetic studies of combined ITS, LSU and tef1 sequence data. Therefore, the phylogenetic placement of the genus Gyrothrix at the family level cannot be determined. Gyrothrix contains 30 epithets in Index Fungorum (2022).
Type species: Gyrothrix podosperma (Corda) Rabenh., Deutschl. Krypt.-Fl. (Leipzig) 1: 72 1844).
Other accepted species: Species Fungorum – search Gyrothrix.
Figure 1 – Gyrothrix anomianthi (MFLU 21-0219, holotype). a–c Specimen. d, e Setae. f–i Conidia. Scale bars: a = 500 μm, b = 200 μm, c = 100 μm, d, e = 20 μm, f–i = 5 μm.
References
Corda ACJ. 1842 – Anleitung zum Studium der Mykologie, 1–223.
Entry by
Nimali Indeewari de Silva, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand, Research Center of Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
Published online 18 November 2022