Helotiales

Gelatinodiscaceae

Gelatinodiscaceae S.E. Carp.
Facesoffungi number: FoF 05876
Taxa are saprobic, endophytic or endophytic (Shoji 1985, Seaver 1938, Johnston & Park 2010). Ascomata are apothecial. Apothecia are mostly cupulate or discoid; some are tremelloid and form cerebriform masses which each lobule contains a turbinate apothecium. The ectal excipulum is composed of cells of textura prismatica to textura angularis to globulosa and sometimes gelatinized and medullary excipulum is composed of cells of textura oblita to textura porrecta or textura intricata and sometimes gelatinized. Paraphyses are filiform, cylindrical, apically swollen and guttulate. Asci are 8-spored, amyloid and arising from croziers. Ascospores are ellipsoid to fusoid, hyaline, yellowish or brownish, smooth, with a gelatinous sheath, guttulate and 0–5-septate (Seaver 1938, Johnston & Park 2010, Huhtinen 1987b, Beaton & Weste 1976, Baral et al. 2012, Johnston & Park 2010). Asexual morphs are sporodochial. Conidia are aseptate, hyaline and subglobose (Seaver 1938, Johnston & Park 2010).

Notes – This family produce small gelatinized apothecia. In our study this family formed a monophyletic clade close to Mitrulaceae. The genera Helicodendron and Dimorphospora were previously classified under Helotiaceae (Wijayawardene et al. 2018). Sri-indrasutdhi et al. (2015) showed these genera are genetically related to Gelatinodiscaceae. Therefore, here we included Helicodendron under Gelatinodiscaceae.

 

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