Heterosphaeriaceae

Heterosphaeriaceae. Rehm.

Index Fungorum, Facesoffungi, MycoBank, GenBank

Classification: Helotiales, Leotiomycetidae, Leotiomycetes, Pezizomycotina, Ascomycota, Fungi

Taxa are saprobic on dead plant material. Ascomata are apothecial. Apothecia are discoid, black, sessile, erumpent and gelatinous. The ectal excipulum is composed of cells of textura angularis and medullary excipulum is composed of cells of textura porrecta. Paraphyses are filiform, clavate and contain many guttules. Asci are 8-spored, amyloid and arising from croziers. Ascospores are aseptate, ellipsoid to fusoid and without gel sheath (Leuchtmann 1987). Asexual morphs are synanamorphic, hyphomycetous acervulus and ceolomycetous. Conidiomata are discoid. Conidia are ellipsoid to fusoid with pointed ends, hyaline and aseptate (Leuchtmann 1987).

Notes – Heterosphaeriaceae taxa are similar to Drepanopezizaceae from their ascospores and conidia morphologies (Jaklitsch et al. 2016).

Type species: Heterosphaeria Grev., Scott. crypt. fl. (Edinburgh) 2: 103 (1823)