Akebia quinata

Akebia quinata –commonly known as akebi (木通), chocolate vine, five-leaf chocolate vine, or five-leaf akebia– is a vine that is native to Japan, China and Korea, commonly used as an ornamental or edible plant in the United States and Europe. In its native habitat, it is often found on hills, in hedges, on trees, along forest edges and streams, and on mountainous slopes....read more on Wikipedia.