Mycoporaceae Zahlbr., Nat. Pflanzenfam., Teil. I (Leipzig) 1(1*): 77 (1903).
MycoBank number: MB 81042; Index Fungorum number: IF 81042; Facesoffungi number: FoF 08309, 12 species.
Non-lichenized or facultatively lichenized on bark of trees or on stones. Hyphae thick, almost hydnoid-corticioid, yellowish, consisting of loose, branched, with finely verrucose, cells born at tips of hyphae resembling blastospores. Sexual morph: Ascostromata comprises pale mycelium, loose, copiously branched, with multi-loculate. Locules scattered, aggregated, botryose or immersed in ascostroma, sphaerical or conical, erumpent or superficial, black, globose to subglobose or irregular, without wall of their own. Ostiole an apical pore or an elongated channel. Peridium of pseudoparenchymatous cells, thin-walled, pale brown to brown, hyaline, hymenium often gelatinous, comprises textura globose cells. Hamathecium comprising filiform, often septate, hyaline, pseudoparaphyses. Asci 8-spored, bitunicate, fissitunicate, cylindrical, obclavate or thickest in the middle, with a short-pedicel, ectotunica thin; endotunica very thick in upper half of ascus, thin in lower half without ring structures, with long tapering ocular chamber. Ascospores irregularly arranged, ellipsoidal, fusiform to clavate with upper hemispore broader, hyaline at immature with thin gelatinous sheath asci firmly enclosed in strongly reticulate, brownish at maturity, variably septate, muriform, not constricted at the septa. Asexual morph: Undetermined (adapted from Hyde et al. 2013).
Type – Mycoporum Flot. ex Nyl.
Notes – Mycoporaceae was established by Zahlbruckner (1903) to accommodate a single genus, Mycoporum. von Arx & Müller (1975) mentioned that the typical characters of this family are unclear and it is difficult to distinguish Mycoporum from Pleosporaceae as some genera have a lichen habit. Lumbsch (1999) placed this family in Dothideales sensu stricto based on structure and development of ascomata in Mycoporum. Cannon & Kirk (2007) accepted Cyrtidulamay in Mycoporaceae. The family contained only one genus in Hyde et al. (2013) and other recently papers e.g. Wijayawardene et al. (2017a) and Lücking et al. (2017). It has been mentioned of uncertain taxonomic placement in Dothideomycetes (Hyde et al. 2013). Molecular data is required to resolve its position within the Dothideomycetes.