Two complete chloroplast genomes of <i>Ceratophyllum</i>, an aquatic genus with unresolved phylogenetic position

<i>Ceratophyllum</i> is an aquatic genus noted for its enigmatic position in the angiosperm phylogenetic tree. In this study, we assembled and annotated the chloroplast genomes of two species. The chloroplast genome length of <i>Ceratophyllum platyacanthum</i> subsp. <i>oryzetorum</i> (Kom.) (V.Komarov, 1988) and <i>Ceratophyllum submersum</i> L. (Carl Linnaeus, 1763) is 156,168 bp and 156,554 bp, respectively. The chloroplast genomes of <i>Ceratophyllum</i> encode 113 unique genes, including 79 protein-coding genes, four rRNA genes, and 30 tRNA genes. The assembly of these two chloroplast genomes not only contributes to our understanding of the genome of <i>Ceratophyllum</i> but also provides valuable insights for the evolutionary study of angiosperms.