Millettia pachycarpa (synonym M. ******iana Hayata ) is a perennial climbing shrub belonging to the genus Millettia. It is one of the most well known among ~150 species of Millettia, as it is widely used in traditional practices, such as for poisoning fish, agricultural pesticide, blood tonic, and treatments of cancer and infertility. The bark fiber is used for making strong ropes.