Kirschsteiniotheliaceae Boonmee & K.D. Hyde, Mycologia 104(3): 705 (2012).
MycoBank number: MB 561021;Index Fungorum number: IF 561021; Facesoffungi number: FoF 01737, 24 species.
Saprobic on decaying wood. Sexual morph: Ascomata superficial, subglobose to globose, dark brown to black, membranaceous, solitary, with a central papilla. Peridium composed of cells of textura angularis. Hamathecium comprising numerous, filiform, hyaline, mostly cellular pseudoparaphyses. Asci 8-spored, bitunicate, cylindrical to clavate, with a long pedicel, apical rounded, with an ocular chamber. Ascospores 2-seriate, ellipsoidal, septate, slightly curved, dull green, brown to dark brown at maturity, with median septum or in lower part, some ascospores with secondary septa, thick-walled, lacking a mucilaginous sheath. Asexual morph: Hyphomycetous. Conidiophores macronematous, mononematous, erect, apically branched, arising straight or slightly curved, solitary, elongate and thick-walled, septate, brown to dark brown, smooth-walled. Conidiogenous cell tretic, terminal, constricted at delimiting septa. Conidia broadly ellipsoid-obovoid, brown to dark brown, constricted and darkly pigmented at the septa, rounded at both ends, smooth-walled.
Type: Kirschsteiniothelia D. Hawksw., J. Linn. Soc., Bot. 91: 182 (1985).
Notes: Kirschsteiniotheliaceae species are mostly saprobes on dead wood from terrestrial and aquatic habitats (Boonmee et al. 2012; Hyde et al. 2013; Su et al. 2016).