Pyrenula apiculata (LCUF YN18172) A, B thallus with apothecia C–E over-mature ascospores with red oil F–I ascospores at different developmental stages, red arrow in F shows gelatinous sheath. Scale bars: 2 mm (A); 1 mm (B); 5 μm (C, E, I); 10 μm (D, F, H); 20 μm (G).

  Part of: Dou M, Liu S, Li J, Aptroot A, Jia Z (2024) Three new Pyrenula species with 3-septate ascospores with red or orange oil when over-mature (Ascomycota, Pyrenulales, Pyrenulaceae) from China. MycoKeys 102: 107-125.