Malaysiasca Crous & M.J. Wingf., in Crous et al., Persoonia 36: 373 (2016)
Hypocreomycetidae, Glomerellales, Malaysiascaceae, Malaysiasca
Index Fungorum number: IF817044; Facesoffungi number: FoF 09184; 1 morphological species; 1 species with sequence data.
Saprobic on dead or decaying leaves of plants in terrestrial habitats. Sexual morph: Ascomata perithecial, immersed at the base, obpyriform, dark brown, with setae. Peridium composed of 3–5 layers of pale brown cells of textura prismatica. Paraphyses branched, septate. Asci 8-spored, unitunicate, cylindrical-clavate, short pedicellate, apex truncate with shallow ring. Ascospores bi-seriate, hyaline, ellipsoid to oblong, apiculate at ends with minute mucoid cap, smooth-walled, guttulate, becoming 1-septate and pale brown after discharge. Asexual morph: Conidiophores subcylindrical, macronematous, unbranched, erect, flexuous, thick-walled, rounded at apex, guttulate, multi-septate, pale to dark brown, smooth-walled. Conidiogenous cells enteroblastic, phialidic, subcylindrical, subhyaline, terminal, integrated. Conidia solitary, cylindrical-ellipsoid to clavate, rounded at apex, aseptate, hyaline, smooth-walled, guttulate, dry in mass (adapted from Tibpromma et al. 2018).
Type species: Malaysiasca phaii Crous & M.J. Wingf., in Crous et al., Persoonia 36: 373 (2016)
Notes: Malaysiasca was established by Crous et al. (2016b) to accommodate Malaysiasca phaii, based on LSU gene analysis, and is related to members of Glomerellales. Tibpromma et al. (2018) found that Malaysiasca phaii belongs in Glomerellales forming a well-supported clade with other families and introduced a new family as Malaysiascaceae. This family is monotypic comprising only Malaysiasca phaii, which was found on leaves of Phaius reflexipetalus (Crous et al. 2016b) and Freycinetia javanica (Tibpromma et al. 2018).