Lembosinaceae Crous, in Crous et al., Fungal Systematics and Evolution 5: 91 (2019) [2020].

MycoBank number: MB 832087; Index Fungorum number: IF 832087; Facesoffungi number: FoF 07695, 26 species.

Sexual morph: Ascomata thyriothecial or hysterothecial, linear, rarely y-shaped, solitary, gregarious, superficial, loose on host surface, black, opening with linear fissures. Upper wall comprises thin layer of mostly neatly arranged dark cells, branched at the outer rim, poorly developed at the base. Hamathecium comprising sparse, filiform, cellular pseudoparaphyses. Asci 8-spored, bitunicate, subglobose to oblong. Ascospores 2–4-seriate, hyaline to brown, 1-septate, upper cell slightly wider and shorter than the lower cell, with basal protrusion (Crous et al. 2019b). Asexual morph: Undetermined.

Type: Lembosina Theiss.

Notes: This family was established based on phylogenetic placement of Lembosina aulographoides. More fresh collections and sequence data are needed to confirm its placement.