Arecophila zhaotongensis (GMB-W1353, holotype) a bamboo specimen b, c appearance of ostioles at the host surface d, e vertical sections of ascomata with ostioles and black clypei f peridium g paraphyses h–m asci n, o asci with a J+ trapezoidal ring (stained in Melzer’s reagent) p–t ascospores surrounded by mucilaginous sheath (t ascospore with longitudinal striations) u a germinating ascospore v, w cultures on PDA after 15 days (v upper, w reverse). Scale bars: 300 µm (d, e); 30 µm (f, g); 50 µm (h–m); 15 µm (n–u).