Diplodia Fr., in Montagne, Annls Sci. Nat., Bot., sér. 2 1: 302 (1834).

MycoBank number: MB 8047; Index Fungorum number: IF 8047; Facesoffungi number: FoF 00147; 397 morphological species (Species Fungorum 2020), 30 species with molecular data (Jayawardena et al. 2019b, c).

Type species: Diplodia mutila (Fr. : Fr.) Fr., Summa Veg. Scand. 2: 417. 1849.

Sphaeria mutila Fr. : Fr., Syst. Mycol. 2: 424. 1823.

Physalospora mutila (Fr. : Fr.) N.E. Stevens, Mycologia28: 333. 1936.

Botryosphaeria stevensii Shoemaker, Can. J. Bot. 42: 1299. 1964.

Notes: Diplodia comprises two morphological groups that are supported by two distinct phylogenetic lineages. In one type the conidia are initially hyaline and aseptate, later becoming brown and 1-septate. Pigmentation is often delayed and in some species dark conidia are never seen. In the second type the conidia become pigmented at an early stage, even while they are enclosed within the pycnidia, they only rarely become septate.