Fungalpedia – Note 711, Euceramia
Euceramia. Bat. & Cif.
Citation when using this data: D. S. Marasinghe et al. 2023 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank.
Classification: Chaetothyriaceae, Chaetothyriales, Chaetothyriomycetidae, Eurotiomycetes, Pezizomycotina, Ascomycota, Fungi
Epiphytic on leaves. Mycelium superficial, composed of branched, septate, brown to dark brown hyphae with soot like net. Sexual morph: Ascomata superficial, globose to subglobose, brown to dark brown, multi-loculate, membranous, pseudo-ostiolate, glabrous, attached to the mycelial pellicle, smooth-walled. Peridium comprising two cell layers, externally comprising pigmented, dark brown, thick- walled cells of textura globulosa and inner layer thinner, composed of lightly pigmented to hyaline, thin-walled cells of textura angularis. Hamathecium comprising filiform, hyaline, septate, branched paraphyses. Asci 8-spored, ellipsoidal or pyriform, unitunicate, sessile. Ascospores irregularly arranged, clavate-fusoid to cylindrical, hyaline, pluriseptate, 4–6-septate, constricted at the septa, smooth-walled, lacking a gelatinous sheath or appendages. Asexual morph: Unde- termined (Batista and Ciferri 1962; Tian et al. 2021).
Notes: Batista and Ciferri (1962) established Euceramia with the type species of
E. palmicola and initially placed in Euceramiaceae. It is characterized by having plurilocular, pseudo-ostiolate, multi-loculate, ascomata with filiform, septate, hyaline, branched paraphyses, unitunicate asci and clavate-fusoid to cylindrical, pluriseptate, 4–5-septate ascospores. Lumbsch and Huhndorf (2010) and Kirk et al. (2013) placed Euceramia in Chaetothyriaceae based on its globose to subglobose, pusedo-ostiolate ascomata with mycelial pellicle and superficial hyphae. Tian et al. (2021) included this genus in Chaetothyriales genera incertae sedis, due to its unitunicate asci. However, the asci of original illustration are typically bitunicate and we believe that the unitunicate asci may be incorrect interpretation based on the original protologue. The unitunicate asci still have not been confirmed by re-examining of type material. Therefore, we treat Euceramia in Chaetothyriaceae until it is confirmed with by morpho-molecular data from epitypification or neotypification of fresh collections.
Type species: Euceramia palmicola Bat. & Cif., Beih. Sydowia 3: 123 (1962)
Other accepted species: Species Fungorum – search Euceramia
References
Batista AC, Ciferri R 1962 – The Chaetothyriales. Sydowia Beihefte 3:1–129.
Lumbsch HT, Huhndorf SM 2010 – Outline of Ascomycota 2009. Myconet 14:1–64.
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