design: Genomic DNA was extracted from the fresh leaves of E.sutchuenensewith the modified CTAB method (Doyle and Doyle, 1987). The high-quality DNA was sheared to an average size of 300 bp for library construction using the VAHTSTM Universal DNA Library Pren Kit (ExCell Bio. Biological Technology Co., Ltd, Shanghai, China), and then was sequenced on the Illumina Novaseq6000 platform (Illumina Inc., San Diego, CA). For assembly, GetOrganelle v1.5 (Jin et al., 2018) was employed to assemble the full length of chloroplast genome sequences with E. acuminatum (GenBank accession number: NC_029941) as reference.