Abstract
Betula hainanensis (Betulaceae) is a new reported species of the genus Betula, which is distributed in tropical, montane rain forests and evergreen broad-leaved forests in the Hainan Island, China. The complete chloroplast genome of B. hainanensis is a typical quadripartite cycle with 161,189 bp length, including a large single-copy region (LSC, 89,841 bp), a small single-copy region (SSC, 19,318 bp), and a pair of 26,015 bp inverted repeat regions (IRs). The circular genome contained 129 genes, including 84 protein-coding genes, 8 ribosomal RNA genes, and 37 tRNA genes. The overall GC content of the circular genome was 35.9%. A maximum likelihood (ML) tree showed a close relationship between B. hainanensis and B. alnoides.
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