Mucuna monosperma

About

Mucuna monosperma, commonly known as negro beans in India, or deer-eye beans, donkey-eye beans, or ox-eye beans, is a large woody climber from the family Fabaceae. The plant has three layers; a brown pod covered in small hairs, curved petals usually colored purple and black round-shaped beans. Small hairs on the pod can irritate the skin.The petals of the Muncuna monnosperma flower opens at night and closes in the morning. It is found in India, including the eastern Himalayas, the northeastern states, and the Andaman and Nicobar Islands, Sri Lanka, Bangladesh, Myanmar, and Thailand. Its natural habitat is evergreen forests, and it commonly grows near swamps or along streams.

Summary from Wikipedia