A new species of the genus Dendrocalamus Nees (Poaceae: Bambusoideae), D. concaviapiculus N.H.Xia et V.T.Nguyen, sp. nov., is described and illustrated from Yen Bai and Phu Tho provinces, Vietnam. It differs from other related Dendrocalamus species by its 5-veined palea between keels and without any vein, its apex and ligule of culm sheath concave, its culm sheath blade short, and its flexuose basal culm internodes.
Mai dây, Vietnam, new species