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Calyptosphaeria collapsa. A, B. Ascomata. C. Longitudinal section of the ascomal wall. D. Paraphyses. E. Ascal apex with apical annulus. F–I. Asci. J, K. Ascospores. A–K from PRA-12743. Scale bars: A, B = 500 μm, C = 20 μm, E, J, K = 5 μm, D, F–I = 10 μm.
