Microthyrium Desm., Annls Sci. Nat., Bot., sér. 2 15: 137 (1841).

MycoBank number: MB 3206; Index Fungorum number: IF 3206; Facesoffungi number: FoF 06748; 91 morphological species (Species Fungorum 2020), 3 species with molecular data.

Type species: Microthyrium microscopicum Desm., Annls Sci. Nat., Bot., sér. 2 15: 138 (1841).

Notes: Microthyrium is characterized by flattened thyriothecia with cells of radial arrangement and hyaline ascospores with cilia.

Species