Which plant is an example of autonomic movements of variation?

Telegraph plant (Desmodium gyrans) is a classical example of autonomic movements of variation.

In this plant, the lateral leaflets of the compound leaf exhibit interesting and peculiar movements during the day. The leaflets may move upward at an angle of 90° and come to lie parallel to the rachis, or they may move downward at 180° to become parallel to the rachis. The leaflets may also move upward again at an angle of 90° to come back to their original position. These movements occur with jerks after intervals, and each movement takes about 2 minutes to complete. 

Autonomic movements are spontaneous movements that are not in response to external stimuli whereas, other types of variation movements, such as nyctinastic, thermonastic, and thigmonastic movements, are induced by external stimuli such as light, temperature, and touch, respectively.