Akebia quinata

Chocolate vine (Akebia quinata), also known as five-leaf chocolate vine or five-leaf akebia, is a vigorous, invasive perennial vine. Originally from eastern Asia, it was introduced to the United States as an ornamental plant in 1845. This invasive can grow up to 40 feet in a single season, is shade-tolerant, and forms dense mats that kill native understory plants and prevents native seeds from germinating and growing. The vines also climb small trees and shrubs, smothering them. (Katy Gardener, Brandywine Conservancy - link below) Primarily in SE New York, it is spreading to the Finger Lakes region.