Asexual morph of Dematiomelanomma yunnanense on a dead stalk of Hypericum monogynum L. (HKAS 124666, holotype) a, b conidiomata in face view c, d vertical section of conidiomata e vertical section of the base of the pulvinate-structure f conidioma wall g conidiogenous cells arising from the wall and developing conidia h vertical section through ostiole i developing stages of conidia j–p conidia q geminating conidia r cultures on PDA from above s cultures on PDA from reverse. Scale bars: 100 μm (c, d); 50 μm (e); 30 μm (f); 10 μm (g); 20 μm (h); 30 μm (i); 15 μm (j–l); 10 μm (m–p); 20 μm (q).