The genus Typhonium (Araceae) in Taiwan

A taxonomic revision of the genus Typhonium (Araceae) in Taiwan is provided in this paper. In addition to Typhonium blumei Nicolson & Sivadasan (as T. divaricatum), the only species previously reported from Taiwan, we report our discovery of a second species, T. roxburghii Schott, from southern Taiwan. The latter is easily distinguished from the former in having broader leaves and slightly decurved sterile flowers. It was possibly unintentionally introduced and naturalized recently. A key to the species along with a description, taxonomic notes, a line drawing, and a photograph is provided.