, a new species of Aristolochiaceae from northern Vietnam and two new combinations in .

Luu, Q.B.Nguyen & H.C.Nguyen is described as a new species from northern Vietnam. It looks most morphologically like but is distinguishable by a combination of different leafy and floral characters. Morphological comparison between the new plant and closest species is provided. In addition, combinations of two recently described species are made, namely (T.V.Do) Luu, Q.B.Nguyen & H.C.Nguyen and (B.G.Huang, Yan Liu & Y.S.Huang) Luu, Q.B.Nguyen & H.C.Nguyen.