Hypoxylon guilanense (Holotype GUM 989) A stromatal habit B close-up view of stromatal surface, with stromatal pigments in 10% KOH C, H, I ascospores in water, with germ-slits D, E ascospores in 10% KOH with dehiscent perispore F, G ascospore under SEM J, K culture on 9 cm OA plates after 1 and 3 wk of incubation (left to right). Scale bars: 2.5 mm (A), 1 mm (B); 10 µm (C–E); 2 µm (F, G); 10 µm (H, I).