Nigrograna puerensis (ZHKU 22-0122, holotype) a, b ascomata observed on host substrate c a vertical section through an ascoma d peridium e hamathecium f–j asci k germinated ascospore l–p ascospores q culture on PDA from above and reverse. Scale bars: 50 μm (c); 30 μm (d); 15 μm (e–k); 5 μm (l–p).