Microcallis Syd., Annls mycol. 24(5/6): 337 (1926)

MycoBank number: MB 3157; Index Fungorum number: IF 3157; Facesoffungi number: FoF 10348; 9 morphological species (Species Fungorum 2021), molecular data unavailable.

Epiphytic on the lower surface of leaves, appearing as black dots scattered, hypophyllous. Mycelium composed of branched-reticulate, septate, olivaceous to blackish-brown hyphae. Sexual morph: Ascomata scattered, developing beneath the mycelial pellicle, globose-depressed, attaching it to the leaf surface, olivaceous-brown, membranous, pseudo-ostiolate. Setae scattered, dark brown to black, erect, obtuse. Wall of ascoma pseudoparenchymatous, composed of textura angularis outside, becoming light brown and flattened in the inner region. Asci 8-spored, bitunicate, clavate to ellipsoid, subsessile or sessile. Ascospores overlapping bi-seriate or multi-seriate, oblong-clavate, hyaline, 1-septate, constricted at the septum, thick-walled, smooth-walled, without a mucilaginous sheath. Asexual morph: Undetermined.

Type species: Microcallis phoebes Syd.