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Page number:339 
Remarks (internal):Approximately 300 species are described in or transferred to Didymosphaeria, some at least belong in different genera. The genus is heterogenous and together with its synonyms needs a complete revisionary study. (Scheinpflug, 1958; Müller & von Arx, 1962). 
Description type:Non-original description 
Description:DIDYMOSPHAERIA Fuckel, Symb. mycol.: 140, 1870.
Phaeodothis H. & P. Sydow, Annls mycol. 2: 166, 1904.
Didymascina Höhnel, Annls mycol. 3: 331, 1905.
Cryptodidymosphaeria (Rehm) Höhnel, Sber. Akad. Wiss. Wien 126: 360, 1917.
Massariellopsis Curzi, Atti 1st. Bot. Univ. Pavia 3: 162, 1927. (fide vön Arx & Maller, 1975).
Type sp.: D. futilis (Berk. & Br.) Rehm, Hedwigia 18: l67, 1879.
Anamorphs: Dendrophoma Sacc. (Phoma); Ascochyta Lib. and Periconia Tode: Fr.
Pseudothecia scattered or often united in groups, immersed, subepidermal, dark coloured, subglobose or slightly flattened, sometimes associated with a slight development of clypeus around the short erumpent ostiole and with hyphae often blackening the substrate. The pseudothecia) wall of textura prismatica is composed of many layers of very small brown to lightly pigmented indistinct cells on the outer layers which are more strongly pigmented and thick-walled around the clypeus, with somewhat larger and narrow cells lining the locule. Asci numerous, 1-8 spored, subsessile to short-stalked, thickened above, arising from a basal cushion of hyaline hymenium. Ascospores obliquely uniseriate or biseriate, one septate, smooth or minutely verruculose, not or constricted at the septum, olivaceous brown to brown. Pseudoparaphyses numerous, branched, hyaline and filiform, trabeculate.
 
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