Examination of the generic concept and species boundaries of the genus Erioscyphella (Lachnaceae, Helotiales, Ascomycota) with the proposal of new species and new combinations based on the Japanese materials

Erioscyphella papillaris TNS-F-81272 (Holotype) A dried apothecia B pure culture on PDA (NBRC 113937) C Ascus arising from ascogenous hyphae D an ascus E ascal pore iodine reactions E1 MLZ (-) without 3% KOH pretreatment E2 MLZ (-) with 3% KOH pretreatment E3 IKI (+) without 3% KOH pretreatment F paraphysis G ascospores with guttules H ectal excipulum I hair-apex with a apical amorphous material J hairs. Mounted in CB/LA (C, D, F–J), MLZ (E1, E2), IKI (E3). Scale bars: 0.5 mm (A); 10 µm (C–J).