Distributions of Hedysarum qilianshanense and related species and clades. The purple star represents H. qilianshanense; yellow dots and the area surrounded by yellow line represent H. przewalskii; the area surrounded by the purple line represent the circumboreal clade; the area surrounded by the purple dotted line represent the eastern QTP clade. Purple or yellow indicates the corolla color. The black frame in Fig. 5B is enlarged in Fig. 5A. Maps from shaanxi.tianditu.gov.cn.