Thallus subcuticular, ± indistinctly effigurate, rounded to irregular 3-7(-10) mm diam., continuous, without distinct lobes, margins ± entire, often with scattered black points or irregularly wavy lines, between these points or lines, bright green to greyish-green, shining, without a prothallus. Perithecia 0.35-0.65 mm diam., almost conical on top and sides, round, totally exposed, black, shining. Asci cylindrical or almost thread-like, very numerous and dense 30-80 × 3.5-5 µm. Ascospores uniseriate, 1-septate, ± ellipsoid, with obtuse ends 8-12 × 2-3 µm. Pycnidia rather few, 0.1-0.15 mm diam., convex, exposed, black, shining. Macroconidia simple, bacillar 4-5 × 2 µm. Microconidia simple, fusiform 4 × 1.5 µm.