Fungalpedia – Note 2134, Orthobellus
Orthobellus. A.A. Silva & Cavalc.
Citation when using this data: Hongsanan S et al. 2020 – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank
Classification: Schizothyriaceae, Mycosphaerellales, Dothideomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
Notes – Orthobellus was included in the Schizothyriaceae (Silva et al. 1973, Wijayawardene et al. 2014b). However, it was treated as Dothideomycetes genera incertae sedis by Phookamsak et al. (2016). Doilom et al. (2018) transferred this genus to their new family Johansoniaceae based on morphology. Orthobellus is similar to Johansonia in having membranous ascomata which lack ostioles, narrowly anastomosing pseudoparaphyses thin-walled at the base and ascospores that are hyaline, ovoid to ellipsoidal, 1-septate, with an apical cell wider than basal cell (Doilom et al. 2018). It differs from Johansonia in forming short, brown, aseptate hyphae at the base of ascomata, and clavate asci. More collections with sequence data are needed to confirm the placement of Orthobellus within Johansoniaceae.
Type species: Orthobellus leguminosarum A.A. Silva & Cavalc., in Silva et al., Publicações. Instituto de Micologia da Universidade de Pernambuco 678: 5 (1973).
Other accepted species: Species Fungorum – search Orthobellus.
References
Silva AA, Cavalcante WA, Leal FB. 1973 – Um novo gênero da família Schizothyriaceae, em Leguminosae. Publicações do Instituto de Micologia da Universidade do Recife 691, 1–16.
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