Fungalpedia – Note 663, Chaetothyriothecium
Chaetothyriothecium Hongsanan & K.D. Hyde
Citation when using this data: D. S. Marasinghe et al. 2023 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank.
Classification: Microthyriaceae, Microthyriales, Dothideomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic on dead leaves. Sexual morph: Thyriothecia superficial, easily removed from host, globose, dark brown to black, ostiole central, ostioles surrounded by long setae. Setae brown to dark brown, with dark septa, narrow at apex and broader at the base. Upper wall comprising angular to cuboid cells, arranged as radial or parallel rows from the centre, with cone-like cells surrounding the ostiole, towards the outer edge, becoming pale brown, with meandering hyphae. Asci 4–8-spored, bitunicate, fissitunicate, obovoid to ovoid or oblong, short pedicellate, ocular chamber not observed, forming at margin of thyriothecium and lying horizontal towards the centre ostiole with hamathecium. Ascospores oblong to ellipsoid, 1-septum, constricted at the septum, upper cell broader than lower cell, smooth-walled. Asexual morph: Undetermined (Hongsanan et al. 2014b).
Notes: Chaetothyriothecium was introduced by Hongsanan et al. (2014b) with the type species C. elegans. Chaetothyriothecium is morphologically similar to Microthyrium in having ostiolate, flattened thyriothecia with the upper wall comprising of radially arranged cells. However, this genus differs from other genera in having long, radially arranged setae around the ostiole. Hongsanan et al. (2014b) provided LSU sequence data and confirmed the placement of this genus in Microthyriaceae.
Type species: Chaetothyriothecium elegans Hongsanan & K.D. Hyde, Phytotaxa 161(2): 161 (2014).
Other accepted species: Species Fungorum – search Chaetothyriothecium.
References
Entry by
Diana Sandamali Marasinghe, 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, Mushroom Research Foundation, 128 M.3 Ban Pa Deng T. Pa Pae, A. Mae Taeng, Chiang Mai, 50150, Thailand
Published online 29 August 2023