Fungalpedia – Note 2424, Brachiosphaera
Brachiosphaera. Nawawi.
Citation when using this data: Dong W et al. 2020 – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1
Classification: Aliquandostipitaceae, Jahnulales, Incertae sedis, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic on submerged wood, wet wood and river foam. Sexual morph: Undetermined. Asexual morph: Colonies effuse, mycelium mostly immersed. Hyphae varying in width, septate, hyaline at first, turning olivaceous brown with age. Conidiophores macronematous, erect, unbranched, hyaline, septate, of variable length. Conidiogenous cells holoblastic, sympodial. Conidia acrogenous, tetraradiate, clustered in chains, ellipsoid or round-shaped, with 4–10 conidial arms, each 1–4-septate (Nawawi and Webster 1976; Suetrong et al. 2011a).
Notes: Brachiosphaera species are commonly recorded in freshwater habitats as listed below. The genus is characterized by tetraradiate conidia with a round central cell with 4–10 arms, each of them 1–4-septate (Nawawi and Webster 1976; Suetrong et al. 2011a). The conidia of B. tropicalis consist of a brown, spherical body and furnished with 4–5 arms, which are longer than 1.5 times diam. of the central part (Nawawi and Webster 1976; Suetrong et al. 2011a). Currently, B. tropicalis is phylogenetically related to Jahnulales. Sequence data for
B. jamaicensis is necessary to shed light on its phylogenetic affinities.
Type species: Brachiosphaera tropicalis Nawawi
Other accepted species: Species Fungorum – search Brachiosphaera.
Figure 1 – Brachiosphaera tropicalis (E192-1). c–e Conidia in PDA. f Broad hyphae in PDA. Scale bars: a–d = 200 µm, e = 50 µm, f = 100 µm.
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