Erythrogloeaceae Senan., Maharachch. & K. D. Hyde, Stud. Mycol. 86: 217–296 (2017)

MycoBank number: MB 821551; Index Fungorum number: IF 821551; Facesoffungi number: FoF 03478; 22 species.

Foliicolous, associated with leaf spots. Sexual morph: Pseudostromata circular, erumpent, consisting of an inconspicuous, usually orange ectostromatic disc, semi-immersed to superficial. Ectostromatic disc flat or concave, orange. Perithecia conspicuous, umber to black, embedded in pseudostromatic tissue, scattered, surrounding the ectostromatic disc, ostiolate. Ostioles cylindrical, obscuring the disc, covered by orange to black crust. Paraphyses deliquescent. Asci 8-spored, fusoid, 2–3-seriate, with an apical ring. Ascospores hyaline, fusoid to cylindrical, symmetrical to asymmetrical, straight to curved, bicellular, with a median septum, constricted at the septum, smooth, multiguttulate. Asexual morph: Coelomycetous. Conidiomata epiphyllous, subepidermal, sometimes eustromatic, acervular or subglobose, brown to black or yellow-orange, amphigenous, opening by irregular rupture, orange-brown wall composed of cells of textura angularis, exuding slimy orange masses of conidia. Conidiophores reduced to conidiogenous cells. Conidiogenous cells lining the inner cavity of conidioma, hyaline to olivaceous, smooth, subcylindrical to ampulliform, tapering to a long, thin neck, at times apical part elongated into a long neck, proliferating several times percurrently near apex, with flaring collarettes, or apex truncate, with minute periclinal thickening. Conidia hyaline to olivaceous, smooth, guttulate or not, thin-walled, ellipsoid, fusoid, ovoid to somewhat obclavate, straight to curved, apex subobtuse, obtusely rounded, base truncate, with prominent marginal frill, or dimorphic, intermixed in same conidiomata. Macroconidia broadly ellipsoid to obovoid, hyaline, smooth, granular to guttulate, thick-walled, apex obtuse, base flattened. Microconidia hyaline, smooth, guttulate, fusoid-ellipsoid, acutely rounded at apex, truncate at base (adapted from Senanayake et al. 2017a).

Type genusErythrogloeum Petr.

Notes – Erythrogloeaceae was erected based on morphology and phylogeny and it comprised Chrysocrypta, Disculoides and Erythrogloeum (Senanayake et al. 2017a). Fan et al. (2018) accommodated Dendrostoma within this family. Erythrogloeaceae is characterized by epiphyllous acervuli, and subcylindrical to ampulliform conidiogenous cells. The sexual morph of this family is reported only from Dendrostoma (Fan et al. 2018).