Fungalpedia – Note 2064, Cyclothyriellaceae
Cyclothyriellaceae. Jaklitsch & Voglmayr.
Citation when using this data: Hongsanan S et al. 2020 – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank
Classification: Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
On bark of moderately decayed twigs, often on and in association with other fungi. Sexual morph: Ascomata commonly clustered in valsoid configuration within KOH-positive tissue or in purple-coloured plant tissue or scattered, immersed to erumpent, more or less globose, black. Peridium pseudoparenchymatous. Ostiolar discs brightly coloured or black, ostioles periphysate. Hamathecium comprising apically free paraphyses, narrow branched, and anastomosing, trabeculate pseudoparaphyses. Asci 8-spored, bitunicate, cylindrical to clavate. Ascospores 1-seriate, ellipsoid to fusoid, brown, with several eusepta, thick-walled, with or without a sheath. Asexual morph: pycnidial, historically called aposphaeria-like. Peridium pseudoparenchymatous, consisting of dark cells. Conidiophores reduced to conidiogenous cells, or inconspicuous. Conidiogenous cells phialidic. Conidia cylindrical, oblong to ellipsoid, hyaline or brown, 1-celled, smooth-walled (Jaklitsch & Voglmayr 2016).
Notes – The family was established by Jaklitsch & Voglmayr (2016) to accommodate the distinct clade containing Cyclothyriella based on C. rubronotata and Massariosphaeria based on M. phaeospora.
Type genus: Cyclothyriella Jaklitsch & Voglmayr.
Other accepted species: Species Fungorum – search Cyclothyriellaceae.
References
Entry by
Sinang Hongsanan, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Science and Oceanography, Shenzhen University, Shenzhen 518060, People’s Republic of China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50002, Thailand
Published online 23 March 2026