Morphology of Sheathospora cornuta from Cornus controversa. A–B Habit of pycnidia on branches C–D transverse section through pycnidium E longitudinal section through pycnidium F conidiophores, conidiogenous cells G conidia. Scale bars: 5 mm (A), 1 mm (B), 500 μm (C–E), 20 μm (F–G).