﻿AbstractA new species ofSterculiafrom Vietnam –S.konchurangensis– is described, illustrated, and compared with the similarS.lanceolata.S.konchurangensisdiffers fromS.lanceolataby the length of the petiole (7.0–9.5 vs. 25–35 mm), shape of the leaf blade (obovate or elliptic vs. elliptic, lanceolate or elliptic-lanceolate), length of the leaf blade (6–8vs.9–20 cm), and length of the calyx lobe (11–12.5 vs. 4–6 mm). A diagnostic key of the 22Sterculiaspecies occurring in Vietnam is also provided.