Allonecte Syd., Annls mycol. 37(4/5): 378 (1939).
Parasitic on living leaves. Sexual morph: Ascomata superficial, subglobose, arranged in small clusters forming on a black, basal subiculum, ostiole central. Peridium composed of cells of textura angularis, outer layers dark brown to black, inner layers brown. Hamathecium filiform, branched, septate, hyaline pseudoparaphyses, mostly longer than asci. Asci 8-spored, bitunicate, cylindrical to fusiform, with a knob-like pedicel. Ascospores ellipsoid to broadly-fusiform, slightly obovoid, rounded ends,uniseptate, constricted at the septum, hyaline, thick-walled. Asexual morph: Unknown (adapted from Boonmee et al. 2011).
Type species: Allonecte lagerheimii (Pat.) Syd.
Notes: Allonecte is unique in having an ascomata that develop from an intramatrical hypostroma and cylindrical asci that contain wide, hyaline, uniseptate ascospores (Müller and Arx 1962; Crane et al. 1998). Fresh collections with DNA sequence data are needed to confirm the taxonomic position of Allonecte.