MycoBank number:MB 80992; Index Fungorum number:IF 80992;Facesoffungi number: FoF 07675, 40 species.

Lichenized. Thallus thin, white, corticolous, withTrentepohliaphotobiont.Sexual morph:Ascomataapothecioid, immersed when young, erumpent to superficial when mature, with a flat to slightly convex disk and a slightly elevated margin, often surrounded by marginal lobes from the substrate, roundish.Peridiumreddish brown, K+ olivaceous brown at exciple issue, with a I–hymenium, apically not enlarged, cellular pseudoparaphyses that are sometimes branched or anastomosed, anastomosed periphyses arising from the inner excipular layer.Asci6–8-spored, elongate or clavate to subcylindrical, wall apically thickened, with a distinct ocular chamber, I- and K/I-.Ascosporesoverlapping, 2-seriate, ellipsoid to oblong, hyaline to brown, 1-septate, constricted near the septum, smooth-walled, sometimes K/ I+ blue gelatinous sheath.Asexual morph: Undetermined.

Type:MelaspileaNyl.

Notes: The taxonomic placement of this group was uncertain due to the absence of molecular data. However, the first phylogenetic analysis confirmed the placement ofMelaspileaceaeunder Eremithallales. The same result is shown in our phylogenetic tree (Fig. 31). Morphologically,Melaspilea sensu strictois similar toEremithallusin ascomata, exciple, hamathecium, ascus and ascospore types, and being lichenized with a trentepohlioid photobiont (Ertz and Diederich 2015). Thus,Eremithalluswas reduced as a synonym ofMelaspileaandEremithallaceaewas synonymized underMelaspileaceae(Ertz and Diederich 2015). This was followed by Wijayawardene et al. (2017a) and our study.

Genera