Fungalpedia – Note 625, Oblongohyalospora

 

Oblongohyalospora Tennakoon, C.H. Kuo, S. Hongsanan & K.D. Hyde

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

Index Fungorum, Facesoffungi, MycoBank, GenBank.

Classification: Oblongohyalosporaceae, Botryosphaeriales, Incertae sedis, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi

Saprobic on the upper surface of dead leaves petioles, visible as small dark brown to black dots. Hyphae superficial, straight, dark brown, irregular, easily removed from the host, appressoria absent. Sexual morph: Undetermined. Asexual morph: Pycnothyria superficial, scattered, rounded to oval, flattened, brown to black, opening by stellate fissures. Upper wall comprising an irregular arrangement of dark brown to brown cells, cells at margin branching and forming superficial hyphae. Conidiogenous cells evanescent. Conidia unicellular, hyaline, distinct 2–3 large guttules, straight or slightly curved, smooth-walled (Tennakoon et al. 2021).

Notes: Tennakoon et al. (2021) introduced Oblongohyalosporaceae in Asterinales, to accommodate Oblongohyalospora which it was collected from dead leaf petioles of Macaranga tanarius. This genus is characterized by superficial, scattered, rounded to oval, flattened, brown to black pycnothyria, upper wall comprising an irregular arrangement of dark cells and distinct unicellular, oblong, hyaline conidia with 2–3 large guttules (Tennakoon et al. 2021). This genus is similar to Cylindrohyalospora by orbicular, ostiolate pycnothyria with oblong, hyaline, aseptate conidia. However, the upper wall of Oblongohyalospora differs from Cylindrohyalospora by the upper wall of irregular arrangement of dark brown to brown cells with relatively shorter, wider, guttulate conidia.

Type species: Oblongohyalospora macarangae Tennakoon, C.H. Kuo, S. Hongsanan & K.D. Hyde, Fungal Diversity: [56] (2021).

Other accepted species: Species Fungorum – search Oblongohyalospora.

 

References

Tennakoon DS, Kuo CH, Maharachchikumbura SS et al 2021 – Taxonomic and phylogenetic contributions to Celtis formosana, Ficus ampelas, F. septica, Macaranga tanarius and Morus australis leaf litter inhabiting microfungi. Fungal Divers 108:1–215.

 

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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