Fungalpedia – Note 696, Pseudolembosia

 

Pseudolembosia Theiss.

Citation when using this data: D. S. Marasinghe et al. 2023 (in prep.) – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank.

Classification: Parmulariaceae, Asterinales, Dothideomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi 

Parasitic on leaves appearing as blackened areas. Sexual morph: Ascomata superficial, scattered or gregarious, black, membranous to subcarbonaceous, subcuticular, circular or broadly elliptical elongated with a longitudinal slit, surrounding blackened areas. Peridium 2-layer, dark brown to pale brown cells of textura angularis. Hamathecium comprising numerous, pale brown pseudoparaphyses. Asci 4–8-spored, bitunicate, hyaline, clavate to sub-globose, thick-walled, apedicellate or short pedicellate. Ascospores 2–3-seriate, cylindrical to clavate, hyaline to pale yellow, muriform, with 1–2-transversal septa and 3–4-longitudinal septa, surface rough, slightly constricted at the septa. Asexual morph: Pycnidia elongated or circular with septate brown conidia (Theissen 1913b).

Note: Pseudolembosia was introduced by Theissen (1913b) with P. geographica as the type species. This genus was reported as pathogens on living leaves (Inácio and Cannon 2008; Wijayawardene et al. 2018, 2020). Pseudolembosia is characterized by superficial, circular to elliptical, disc-like, black, rather flat ascomata raised up to Y-shaped to irregular near the center (Inácio and Cannon 2008).

Type species Pseudolembosia geographica (Massee) Theiss., Annls mycol. 11(5): 432 (1913)

Other accepted species:  species Fungorum – search Pseudolembosia.

 

References

Inácio CA, Cannon PF 2008 – The genera of the Parmulariaceae. CBS biodiversity series, vol 8. CBS Fungal Biodiversity Centre, Utrecht.

Theissen F 1913b – Über Membranstructuren bei den Microthyriaceen als Grundlage für den Ausbau der Hemisphaeriales. Mycologisches Centralblatt 3:273–286.

Wijayawardene NN, Hyde KD, Al-Ani LK et al 2020 – Outline of Fungi and fungus-like taxa. Mycosphere 11:1060–1456.

Wijayawardene NN, Hyde KD, Lumbsch HT et al 2018 –  Outline of Ascomycota: 2017. Fungal Divers 88:167–263.

 

Entry by 

Diana Sandamali Marasinghe, 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, Mushroom Research Foundation, 128 M.3 Ban Pa Deng T. Pa Pae, A. Mae Taeng, Chiang Mai, 50150, Thailand

 

Published online 29 August 2023

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