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Hypoxylon aff. rubiginosum (GUM 1588) A stromatal habit B close-up view of stromatal surface, with stromatal pigments in 10% KOHC section of stroma showing perithecia and ostioles D ascus in Melzer’s reagent E ascospores in 10% KOH with dehiscent perispore. Scale bars: 2.5 mm (A); 0.5 mm (B, C); 20 µm (D); 10 µm (E).
