Fungalpedia – Note 2441, Pseudotrichia
Pseudotrichia. Kirschst.
Citation when using this data: Dong W et al. 2020 – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank
Classification: Melanommataceae, Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic in terrestrial or rarely aquatic habitats. Sexual morph: Ascomata solitary or scattered, immersed to nearly superficial, globose to pyriform, carbonaceous or coriaceous, with ostiolate papilla. Peridium two-layered, comprising thick-walled cells of textura angularis, outer layer heavily pigmented, comprising small, dark brown to black cells, inner layer comprising lightly pigmented or hyaline cells. Pseudoparaphyses numerous, cellular, narrow, hyaline, septate, unbranched. Asci 8-spored, bitunicate, fissitunicate, elongate clavate to sub-cylindrical, with narrow, long, furcate pedicellate, apically rounded with a minute ocular chamber. Ascospores uni- or bi-seriate, fusoid, straight to curved, hyaline or pale brown, 1- to multiseptate, smooth-walled, thick-walled (Thambugala et al. 2014; Tian et al. 2015). Asexual morph: Undetermined.
Notes: Pseudotrichia was placed in Didymosphaeriaceae by Thambugala et al. (2014) based on re-examination of the holotype of P. stromatophila. Pseudotrichia was polyphyletic as shown in Tian et al. (2015) as one strain of P. guatopoensis Huhndorf formed an independent lineage in Pleosporales and two strains of P. mutabilis (Pers.) Wehm. clustered in Pleomassariaceae. The sequence data of the type species P. stromatophila and other Pseudotrichia species are needed to clarify the familial and generic status (Thambugala et al. 2014). Pseudotrichia allequashensis Fallah & Shearer differs from other species in the genus in having a narrow cylindric neck with a clypeus and hyaline ascospores with three eusepta and two distosepta (Huhndorf 1994; Fallah and Shearer 2001). However, the placement of
P. allequashensis in Didymosphaeriaceae needs confirmation with molecular data.
Type species: Pseudotrichia stromatophila Kirschst.
Other accepted species: Species Fungorum – search Pseudotrichia.
References
Entry by
Wei Dong, Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China, Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, China
Published online 22 May 2026