A. hysterinum lenticular-shaped colonies on host A stromata and conidiomata B, C asci D–G ascospores H colony on MEA I black masses of conidia in culture K, L conidiophore mother cell M rugose conidiogenous cell N–P conidia with lobate sterile cells O conidia. Scale bars: 200 µm (A); 10 µm (B, C); 5 µm (D–G); 200 µm (I); 5 µm (K, M, O); 10 µm (P).