Exormatostoma Gray, Nat. Arr. Brit. Pl. (London) 1: 521 (1821)
MycoBank number: MB 1965; Index Fungorum number: IF 1965; Facesoffungi number: FoF 09986; 2 morphological species (Species Fungorum 2020).
Type species – Exormatostoma nebulosa (Pers.) Gray