Sequence alignments for Requienella populi - FUSE - <i>Requienella </i><i>populi </i>sp. nov. (<i>Requienellaceae, Xylariales</i>) from the bark of living aspen trees in Western Norway

The new species Requienella populi in the Requienellaceae is described from Western Norway. Multigene analysis of the four molecular markers ITS, LSU, RPB2 and TUB revealed it as a strongly supported sister clade within the genus. The new species appears to be restricted to old aspen Populus tremula trees and can be morphologically distinguished by submuriform and somewhat smaller ascospores compared to the other species of the genus.<br>doi.org/10.3114/fuse.2025.15.10