Leptosphaeriaceae M.E. Barr, Mycotaxon 29: 503 (1987)

Facesoffungi number: FoF 01151

Saprobic, fungicolus, hemibiotropic or pathogenic on leaves and wood in terrestrial habitats.Sexual morph: Ascomata immersed, erumpent to superficial, globose, subglobose or obypyriform, black to dark brown, coriaceous, ostiolate, periphysate. Ostiole welldeveloped, broadly or narrowly conical, with a dark brown to black papilla, ostiolar canal filled with tissue of hyaline cells. Peridium composed of large, pigmented, thin-walled, scleroplectenchymatous or plectenchymatous cells, usually arranged in textura angularis. Hamathecium of dense, septate, cellular pseudoparaphyses,usually embedded in a mucilaginous matrix. Asci 8-spored, bitunicate, fissitunicate, cylindrical to oblong, with a pedicel and ocular chamber.Ascospores uniseriate and partially overlapping, brown, reddish brown or yellowish brown, fusoid, narrowly fusoid, obovoid, oblong or filiform, septate and constricted at the septa, smooth-walled, with or without guttules.Asexual morph: Coelomycetousor hyphomycetous. Conidiomata immersed to nearly superficial, depressed globose with a flattened base and cylindrical neck. Ostiole sometimes papillate or with elongated neck.Conidiomata wall scleroplectenchymatous.Conidia oblong, ellipsoidal to subcylindrical.Sclerotia sometimes produced (Boerema et al. 1994; Hyde et al. 2011).Conidiophores solitary or in small groups, hypophyllous, straight to slightly sinuous, simple, 3–6-septate, pale to chestnut-brown, smooth. Conidiogenous cells tretic, integrated, terminal to intercalary, sympodial, cylindrical, yellowish to pale brown. Conidia dry, solitary, cylindrical to subcylindrical, apex and base rounded, transversally 2–9 septate, often deeply constricted at septa, eguttulate, subhyaline to pale brown, smooth-walled, hilum thickened and darkened (Alves et al. 2013; Zhang et al. 2012).

Family type: Leptosphaeria Ces. & de Not., Comm. Soc. crittog. Ital. 1(4): 234 (1863).

Fig 1. RAxML tree based on a combined dataset of ITS, SSU, LSU, RPB2 and TEF sequence data from 49 strains. Bootstrap support values for maximum likelihood greater than 50 % and Bayesian posterior probabilities greater than 0.90 are given below and above the nodes. Halojulella avicenniae is the out group taxon. The original isolate numbers are noted after the species names. Ex-type culture numbers are in bold. The type species of each genus is indicated in blue.

Fig 2.RAxML tree based on a combined dataset of ITS, ACT and LSU sequence data of 35 strains. Bootstrap support values for maximum likelihood greater than 70% and Bayesian posterior probabilities greater than 0.90 are given below and above the nodes. Alternariaster helianthi CBS 327.69 is the out group taxon. The original isolate numbers are noted after the species names. Newly generated strains in this study are indicated in red. The type species of each genus is indicated in blue.