The complete mitochondrial genome of <i>Fusicolla acetilerea</i> (Nectriaceae, Hypocreales)

<i>Fusicolla acetilerea</i> (Nectriaceae, Ascomycota) is an emerging saprotrophic/plant-associated fungus whose genomic resources remain scarce. Here, we report the complete mitochondrial genome of <i>F. acetilerea</i> strain NIBRFGC000505922, assembled from Illumina NovaSeq reads. The circular-mapping mitogenome is 29,182 bp in length with a GC content of 28.7%. It encodes the canonical set of oxidative phosphorylation genes, two rRNA genes, 25 tRNA genes, and an intronic <i>rps3</i> gene. A phylogenetic analysis based on 14 core protein-coding genes places <i>F. acetilerea</i> within Nectriaceae, forming a well-supported clade with <i>Nectria cinnabarina</i>. This mitogenome provides a reference for various genetic studies in <i>Fusicolla</i> and related taxa.