Leptosphaeria Ces. & De Not., Comm. Soc. crittog. Ital. 1(4): 234 (1863)
Saprobic or pathogenic on stems and leaves of herbaceous or woody plants in terrestrial habitats.Sexual morph: Ascomata solitary, scattered or in small groups, erumpent to superficial, globose to subglobose, broadly conical, small- to medium-sized, smooth, easily removed from the host substrate, with a flattened base, black, coriaceous, ostiolate. Ostiole apex with a welldeveloped, conical, shiny, papilla, ostiolar canal filled with periphyses, dark brown to black. Peridium composed of two strata, outer stratum composed of small, thick-walled, scleroplectenchymatous cells of textura angularis, surface heavily pigmented, thinner at the apex, wide at the sides, inner layer composed of subhyaline or light brown, scleroplectenchymatous cells of textura angularis, cells near the base comparatively larger. Hamathecium comprising 1.5–3 μm wide, dense, long, septate, cellular pseudoparaphyses, branching and anastomosing above the asci, embedded in a gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, cylindrical, pedicel furcate, rounded at the apex, with an ocular chamber. Ascospores uni- or bi-seriate, partially overlapping, reddish to yellowish brown, narrowly fusoid with sharp to narrowly rounded ends, 3-septate, constricted at each septum, cell above central septum widest, smooth-walled, lacking a mucilaginous sheath. Asexual morph:Coelomycetous. Conidiomata depressed globose with a flattened base and cylindrical neck,wallscleroplectenchymatous. Conidia ellipsoidal to subcylindrical (Boerema et al. 1994; Hyde et al. 2011).
Type species: Leptosphaeria doliolum (Pers.) Ces. & De Not., Comm. Soc. crittog. Ital. 1(4): 234 (1863)
≡ Sphaeria doliolum Pers., Icon.Desc.Fung. Min. Cognit. (Leipzig) 2: 39 (1800)