Description contributed by Graham Kinsey, CABI, based on Wehmeyer (1933).
Anamorph: Phomopsis rhois (Sacc.) Traverso (1906). Conidiogenous cells 25 x 1 µm. Alpha-conidia 10 x 2-2.5 µm.
Teleomorph: stromata on host surface as numerous pustulate blackened ruptures, surface of bark blackened evenly or only around the barely erumpent ostioles, ventral zone complete or sometimes merely lateral. Ascomata 240-400 x 100-320 µm, irregularly scattered. Ascospores 10-13.5 x 2.5-4 µm.
Wehmeyer considered this to belong within the D. eres aggregate.