Characteristics chloroplast genome of Yangxincai and correction of its Latin scientific name.

Yangxincai, a "highcalcium vegetable," is a hybrid of Phedimus aizoon L. and Phedimus kamtschaticus (Fisch., 1840), historically misidentified as P. aizoon L. owing to their morphological similarity. Uncertainty regarding its parentage has impeded official nomenclature and caused confusion in research. To clarify its maternal origin, we sequenced and assembled its complete chloroplast genome, 151,666 bp in length with a GC content of 37.73%, comprising LSC 83,128 bp, SSC 16,704 bp, and a pair of IRs (25,917 bp). A total of 128 genes were annotated,including 84 proteincoding, 36 tRNA, and 8 rRNA genes. Phylogenetic analysis of the maternally inherited chloroplast genome confirmed P. aizoon as the maternal parent, and we propose the corrected name Phedimus aizoon × kamtschaticus for this hybrid cultivar.