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Sexual morph of Diatrypella betulicola (BJFU CF2020505, holotype). (A) Ascomata on the host. (B) Ascoma on the host. (C) Transverse section of ascoma. (D) Longitudinal section through ascoma. (E,F) Ascus and ascospores. (G) Ascospores. Scale bars: (A) = 1 mm; (B–D) = 500 μm; (E–G) = 10 μm.
