Iodosphaeria thailandica (MFLU 21-0041, holotype) a substrate b, c ascomata on the host surface d peridium e section of ascomata f appearance of setae (black arrow) on peridium g setae h paraphyses i, j asci k J+ apical ring (in Melzer’s reagent) l–q ascospores (p, q stained in Lactophenol Cotton Blue). Scale bars: 10 μm (d); 100 μm (e); 5 μm (f–h); 20 μm (i, j); 10 μm (k–q).