Typhonium hangiae (Araceae: Aroideae: Areae), a new species from Central Vietnam with a key to Vietnamese species of the genus

Summary Typhoniu m han giae (Araceae) a new species from Central Vietnam is described and illustrated. The taxonomic treatment includes a description, photographs, geographic distribution, ecology, conservation assessment and morphological comparison of the new species with the allied species T. thatsonense . A revised identification key to all known species of the genus Typhonium in Vietnam is included.