Abstract:Mussaenda longipetala H. L. Li is reported as a new record to China. It is similar to M. caudatiloba D. Fang and M. lancipetal X. F. Deng & D. X. Zhang, but differs in its leaf blades oblong-ovate or elliptic-ovate, stipules caduceus, calyx lobes 6-8 mm long, corolla tube ca. 3 cm long, corolla lobes lanceolate, ca. 12 mm long. The species is only found in Quang Ninh Province of northem Vietnam and coastal areas of Beibu Gulf in Guangxi, China. The voucher specimens are kept in Herbarium of Guangxi Institute of Botany (IBK).