Rhytidhysteron xiaokongense (HKAS 112728, holotype) a, b conidiomata on natural wood surface c sections through conidioma d ostiolar neck e conidioma wall f–h conidiogenous cells and developing conidia i–m conidia n germinated conidium o, p culture characters on PDA (o = above, p = reverse). Scale bars: 100 μm (c, d); 50 μm (e); 15 μm (f–h); 10 μm (i–m); 20 μm (n); 25 mm (o, p).