Abstract
A new species of Polygonatum, P. annamense based on evidence from herbarium studies, molecular data, and cultivated material is described and illustrated from upper elevations of the southern Annamite ecoregion where it occurs disjunctly in both the Central Highlands and the Đà Lạt Plateau, Vietnam. It is compared to the morphologically similar P. punctatum with which it has been confused, and its relationship to P. mengtzense, P. punctatum, and P. urceolatum is discussed.