Fig. 1

Feature overview of Cinnamomum camphora and its relative, C. kanehirae. a Morphological features of C. camphora and a phylogenetic species tree in Lauraceae. Morphological images included a branchlet, inflorescences, flower, leaf, and young stem. The species tree is based on amino acid sequences of identified single-copy OGs with a coalescent-based method from 29 Lauraceae species. b Inferred distribution of C. camphora (blue) and C. kanehirae (red). c History of effective population size predicated using the PSMC method. The blue line for C. camphora is based on the consensus sequences obtained from Illumina sequencing data, and the red line for C. kanehirae is from Chaw et al. [3]. One hundred bootstraps were performed and the margins are shown in light blue and light red for C. camphora and C. kanehirae, respectively