Trichobelonium albobarbatum (TNS-F-86430, holotype) A fresh apothecia on the decaying culm of unidentified grass (Poaceae) B dried apothecium with hyaline connective hyphae C protruding immature apothecia from the stromata D vertical section of the apothecium (in LA) E crystals in medullary excipulum (in LA) F connecting hyphae between ectal excipulum and subiculum (in LA) G texture of the stroma (in LA) H ascospores (in CB/LA) I ascus with mature ascospores (in CB/LA) J ascus with immature ascospores (in CB/LA) K immature ascus containing yellowish oil globes in the cytoplasm (in CB/LA) L paraphysis (in CB/LA) M rehydrated paraphysis with fragmented refractive vacuoles (in water) N blue-stained apical pore of ascus (in Melzer’s solution after 3% KOH pretreatment) O croziers at the base of asci (in CB/LA) P three months old colony on PDA Q yellow crystals formed on hyphae R acicular crystals (in water) S–V conidiophores with conidia (in CB/LA); W hyphae with exudates (in CB/LA). Scale bars: 0.5 mm (A, Q); 0.25 mm (B, C); 50 μm (D–F); 20 μm (R); 10 μm (G, H–O, S–W).

  Part of: Itagaki H, Hosoya T (2023) A new genus Neobelonopsis and two new species of Trichobelonium (Helotiales, Ascomycota) discovered mainly from poaceous grasses native to Asia in Japan. MycoKeys 99: 45-85.