Macrovalsariaceae D. Pem, Doilom & K.D Hyde, in Pem et al., Mycosphere 10(1): 1149 (2019).

MycoBank number: MB 557067; Index Fungorum number: IF 557067; Facesoffungi number: FoF 06682, 2 species.

Saprobic on dead twigs, wood, bamboo and culms of a wide range of hosts. Sexual morph: Ascostromata dark brown to black, immersed to erumpent, solitary to a few in a group, carbonaceous, oblate, sphaeroid to subsphaerical, with a central ostiole. Peridium comprising brown and small-celled textura angularis. Asci 8-spored, bitunicate, fissitunicate, cylindro-clavate, with a short fine pedicel, apically rounded with a small ocular chamber. Hamathecium comprising unbranched, tapering upwards, apically free, paraphyses. Ascospores uni-seriate to irregularly uni-seriate, elliptical-fusoid, brown, 1-septate, slightly constricted at septum, with skull cap-like germ apparatus at the lower end, transverse striation near the center of lower cell with longitudinal striations from transverse striation to the end cell surface smooth, granular to verrucose. Asexual morph: Undetermined.

Type: Macrovalsaria leonensis (Deighton) Petr.

Notes: Pem et al. (2019c) introduced Macrovalsariaceae to accommodate Macrovalsaria. The family is characterized by dark brown to black ascostromata, cylindro-clavate asci, with a short fine pedicel and elliptical to fusoid ascospores with skull cap-like germ apparatus.