Delphinella abietis  

Description contributed by Graham Kinsey, CABI.

Anamorph: Phoma-like. Conidiomata 150-200 µm diam, pycnidial, ± globose, black, immersed to erumpent, thick-walled, unilocular. Conidia 10-16 x 4-6.5 µm, fusiform, hyaline, smooth, simple.

Teleomorph: Stromata 150-200 µm diam., unilocular, erumpent mostly on the upper leaf sufaces and at the margins. Ascomata formed a locule within the stroma, without conspicuous ostioles. Interascal tissue present only as remnants of compressed interascal pseudoparenchyma. Asci 50-90 x (14-)18-22 µm, cylindrical-clavate to saccate with a foot-shaped base, thick-walled, J-, 16- to 32-spored, arising parallel to each other from the entire base of the locule. Ascospores 11-21 x 4-6.5 µm, hyaline, clavate to narrowly ellipsoid, smooth, 1-septate, slightly constricted at the septum, with one cell shorter and more rounded than the other.