Description contributed by Graham Kinsey, CABI, based on Wehmeyer (1933).
Anamorph: Phomopsis dulcamarae (Sacc.) Traverso (1906). Conidiogenous cells 25 x 1.5 µm. Alpha-conidia 8-10 x 2 µm.
Teleomorph: stromata on host surface as numerous ostioles, erumpent singly or in loose groups of 2-3, entostroma widely effuse, surface of bark or wood usually heavily blackened, ventral zone usually deep in wood or often along the margin of the pith. Ascomata 400-600 x 300-400 µm, scattered singly, usually embedded in the wood and often causing slight pustulate swellings, ostioles short-cylindrical. Asci 52-60 x 8-9 µm, clavate, with a refractive apical ring. Ascospores 13-15(-17) x x 2.5-4(-5) µm, fusiform-ellipsoidal.
Wehmeyer considered this to belong with D. sarothamni (as a
variety), differing in the ostioles which are separately erumpent and
lack an ectostomatic disc, and also the heavier dorsal blackening and
the perithecia being less grouped.
On dead stems of Solanum dulcamara.
From England (East and West Cornwall, West Norfolk, Suffolk); anamorph additionally from England (East Kent).