A new species of the genus Amorphophallus (Thomsonieae, Aroidea, Araceae) from the coastal area of Central Vietnam

Amorphophallus khanhhoaensis is described as a new species from central Vietnam. This species is morphologically similar to and therefore compared with A. cicatricifer (eastern Thailand and Myanmar), A. umbrinus (Vietnam), and A. ferruginosus (Laos). An updated key to the Vietnamese species of Amorphophallus is provided.