The first mitochondrial genome of <i>Callithamnion corymbosum</i> (Smith) Lyngbye 1819

In this study, the complete mitochondrial genome of <i>Callithamnion corymbosum</i> (Smith) Lyngbye 1819 was reported for the first time, which could be beneficial for systematic studies on <i>Callithamnion</i>. The complete mitochondrial genome was 25,462 bp in length and contained 48 genes including 23 protein-coding, two rRNA, and 23 tRNA genes. The phylogenetic analysis based on the mitochondrial genome sequences revealed that all 16 Ceramiales species grouped into three distinct clades, and <i>C. corymbosum</i> of this study forms a independent clade, showing a unique status within the order Ceramiales.