分类讨论：F. emeiensis is most similar to F. nubicola, F. chinensis, and F. pentaphylla in morphology, which is also supported by the phylogenomic results (Fig. 3A and SI Appendix, Fig. S4). However, F. emeiensis has unique and stable morphological features and can be distinguished from related species. Plants of F. emeiensis are robust with thick petiole and runner, and leaves are also thick with deep veins, which separate it from its closely related species F. nubicola. Different from F. chinensis and F. viridis with trifoliate leaves, F. emeiensis has pinnately quinquefoliolate leaves. In addition, petioles, runners, and peduncles of F. emeiensis are covered with appressed hairs, while those of F. pentaphylla are covered with spreading hairs. Another trait differing F. emeiensis from F. pentaphylla is the color of abaxial leaf. The abaxial leaf of F. emeiensis is light green, while that of F. pentaphylla is green to purplish. Therefore, the identification of this new species (F. emeiensis) is well supported by both genetic and phenotypic data. F. emeiensis is diploid with the standard karyotype (2n = 2x = 14), and named F. emeiensis because the type specimen was discovered in the Emei Mountains within the Sichuan Province in Southwest China. Our study confirmed that the genome-wide phylogenomic analysis can discriminate very closely related organisms and uncover cryptic species。