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Seltsamia ulmi (WU 36957). A. Horizontal section at the ostiolar level. B. Horizontal section at the ascomatal level. C, D. Ascoma in vertical section. E. Peridium in vertical section showing remnants of subicular hyphae. F–H. Asci (young in F). I. Ascus apex showing ocular chamber. J–Q. Ascospores (showing swelling sheath in J and K). E, J. in 3 % KOH. Scale bars: A–C = 200 μm; D = 100 μm; E–H, K = 25 μm; I = 10 μm; J, L–Q = 15 μm.
