Fungalpedia – Note 860, Pseudorhynchia
Pseudorhynchia. Höhn.
Citation when using this data: Huang SK et al. 2021 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank., Fig 1
Classification: Trichosphaeriaceae, Trichosphaeriales, Diaporthomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic leaves or stems. Sexual morph: Ascomata perithecial, scattered or gregarious, semi-immersed to superficial, globose to subglobose, brown or black, membranaceous, tuberculate, inconspicuous ostioles surrounded by long setae. Setae composed of filiform, brown, septate, tapering hyphae, with metallic iridescence. Peridium composed of membranaceous, brown to hyaline cells of textura epidermoidea to textura angularis to textura prismatica. Paraphyses absent. Asci 8-spored, unitunicate, clavate, pedicellate, apex rounded, apical ring indistinct, evanescent. Ascospores bi-seriate, hyaline, fusiform, straight or slightly curved, 0–1-septate, faintly striate, guttulate. Asexual morph: Undetermined (adapted from Penzig & Saccardo 1897, Dulymamode et al. 2001).
Notes – Pseudorhynchia was established by von Höhnel (1909a) based on Ceratostomella polyrrhyncha. The second species, P. mauritiana, was collected from leaves of Cordemoya integrifolia in Mauritius. They are characterized by ascomata with ostioles surrounded by long setae and fusiform ascospores (Penzig & Saccardo 1897, Dulymamode et al. 2001). Lumbsch & Huhndorf (2007) placed this genus in Niessliaceae, but no sequence data is available.
Type species: Ceratostomella polyrrhyncha Penz. & Sacc., Malpighia 11(9-10): 408 (1897).
Other accepted species: Species Fungorum – search Pseudorhynchia.
Figure 1 – Ceratostomella polyrrhyncha: (BPI-802960). a Material. b–d Ascomata on the host. e Squashed ascoma. f Seta. g–h Ostiole. i Ascomata cross section. j Peridium. k–l, p Asci. m–n Ascospores. o Apical ascus. Scale bars: b, e = 500 µm, c–d, f, i = 200 µm, g–h, j, p = 50 µm, k–l = 20 µm, m–o = 10 µm.
References
Lumbsch HT, Huhndorf SM. 2007 – Outline of ascomycota–2007. Myconet 13, 1–58.
Entry by
Shi-Ke Huang, State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China, The Engineering Research Center of Southwest Bio-Pharmaceutical Resources, Ministry of Education, Guizhou University, Guiyang 550025, Guizhou Province, China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand, The Mushroom Research Centre, Guizhou University, Guiyang 550025, China
Published online 14 September 2021