Fungalpedia – Note 2953, Profundisphaeria
Profundisphaeria J.F. Zhang, Jian K. Liu & Z.Y. Liu.
Citation when using this data: Zhang JF et al. 2023 – Fungalpedia.
Index Fungorum, Faceoffungi, MycoBank, GenBank, Fig 1.
Classification: Profundisphaeriaceae, Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi.
Saprobic on dead culm of unidentified herbaceous plant. Sexual morph: Ascomata deeply immersed, globose to subglobose, scattered, solitary, non-papillate, ostiolate. Ostiole central, with a broadly pore-like opening, and lined with numerous periphyses in the ostiolar canal. Peridium carbonaceous to coriaceous, composed of two strata, with the outer stratum consisting dark pigmented cells of unclear texture, and the inner stratum of several layers of pale pigmented to hyaline, thin-walled cells of textura angularius. Hamathecium comprising numerous, branched, septate, filamentous pseudoparaphyses, anastomosing between and above the asci, embedded in a gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, cylindrical to clavate, short pedicellate, apically round with a developed ocular chamber. Ascospores overlapping bi-seriate to tri-seriate, narrowly fusoid, two-celled, constricted at the septum, asymmetrical, guttulate. Asexual morph: Undetermined.
Notes: Profundisphaeria is introduced as a monotypic genus to accommodate the type species P. fusiformispora based on morphological examination and molecular analysis. More fresh collections of Profundisphaeria are needed to stabilize the placement of this genus and the family Profundisphaeriaceae.
Type species: Profundisphaeria fusiformispora J.F. Zhang, Jian K. Liu & Z.Y. Liu.
Other accepted species: Species Fungorum – search Profundisphaeria.
Figure 1 – Profundisphaeria fusiformispora (GZAAS 20-4010, holotype): a Appearance of ascomata on the substrate. b Ostiole with numerous periphyses. c Vertical section through ascoma. d Section of peridium. e Pseudoparaphyses. f–h Asci. i–m Ascospores. Scale bars: b = 100 µm, c = 200 µm, d = 5 µm, e–m = 10 µm.
Entry by
Jinfeng Zhang, Guizhou Provincial Institute of Tea, Guiyang 550006, People’s Republic of China, Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou Academy of Agricultural Sciences, Guiyang 550006, People’s Republic of China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.
Published online 14 August 2026