Characterization of the complete chloroplast genome sequence of <i>Asparagus densiflorus ‘</i> Sprengeri <i>’</i> Huttleston 1970 (Asparagaceae)

<i>Asparagus densiflorus '</i>Sprengeri<i>'</i> is an economically important ornamental and medicinal plant within the genus <i>Asparagus</i>. In this study, we sequenced and assembled its complete chloroplast (cp) genome using the Illumina NovaSeq platform. The circular cp genome is 157,116 bp in length with a GC content of 38%, comprising a large single-copy (LSC) region (85,327 bp), a small single-copy (SSC) region (18,677 bp), and two inverted repeat (IR) regions (26,556 bp each). The genome encodes 133 functional genes, including 87 protein-coding genes, 38 tRNA genes, and 8 rRNA genes. Phylogenetic analysis indicates that <i>A. densiflorus '</i>Sprengeri<i>'</i> is most closely related to <i>A. densiflorus '</i>Myers' and <i>A. falcatus</i>, suggesting a shared evolutionary lineage. This study will not only shed light on <i>A. densiflorus '</i>Sprengeri<i>''</i>s evolutionary position but also provide valuable chloroplast genomic information for future studies into the origins and diversification of the genus <i>Asparagus</i> and the Asparagaceae family.