Zeloasperisporiaceae Crous, Persoonia 34: 215 (2015).
MycoBank number: MB 812487; Index Fungorum number: IF 812487; Facesoffungi numbers: FoF 08834, 8 species.
Epiphytic on the surface of living and dead fallen leaves, appearing as small black dots, or in air. Superficial hyphae absent. Sexual morph: Thyriothecia superficial, solitary, circular, flattened, brown to dark brown, poorly developed at the base, ostiole lacking. Upper wall comprises ellipsoid angular cells, radiating from the center to the outer rim. Hamathecium pseudoparaphyses not observed. Asci 8-spored, bitunicate, fissitunicate, globose to ovoid or clavate, apedicellate, with an apical ocular chamber. Ascospores 2–3-seriate, obovoid to clavate, hyaline, 1-septate, slightly constricted at the septum, wider in upper cell, smooth-walled or verrucose, with or without thin mucilaginous sheath (Wu et al. 2011b; Crous et al. 2015b). Asexual morph: Hyphomycetous. Hyphae branched, septate, and swollen by constrictions at the septa, pale brown to brown, occasionally hyaline, smooth-walled, micronematous conidiogenous present or absent. Conidiophores reduced to conidiogenous cells, arising as lateral hyphal branches, cylindrical to subcylindrical, straight or slightly curved, unbranched, slightly tapering towards the apex, brown, slightly thickwalled. Conidial proliferation sympodial, with one to several conidiogenous loci, mostly crowded at the apex, protuberant of thickened, refractive, conidial scars. Conidia fusiform to obclavate or cylindrical, straight to curved, pale brown to brown, 1–3-septate, distinctly or slightly constricted at the septum, tapered towards the apex, towards a protruding scar, somewhat thickened and darkened, refractive, smooth- walled or verrucose (Hongsanan et al. 2015b).
Type: Zeloasperisporium R.F. Castañeda.
Notes: Zeloasperisporiaceae was established by Crous et al. (2015b) to accommodate Neomicrothyrium (sexual genus Microthyrium-like) and Zeloasperisporium (asexual genus). This family was poorly resolved in molecular analysis as it is related to freshwater taxa in Natipusillales, and morphology of Zeloasperisporiaceae is very different from Natipusillales (Ferrer et al. 2011; Wu et al. 2011b). Hongsanan et al. (2015b) linked morphs and synonymized Neomicrothyrium under Zeloasperisporium. Moreover, they introduced the new order, Zeloasperisporiales to accommodate Zeloasperisporiaceae based on its distinct clade within Dothideomycetes.