This is definitely Oriental Bittersweet. Based on the rounded shape of the leaves and the color of the shell of the berries, this is the more intrusive Oriental variety. Oriental bittersweet has pale capsules, while those of the American bittersweet are orange in color. The capsules also contain five smaller fruits, instead of only one larger fruit. Oriental Bittersweet grows more rapidly, and because of the number of seeds, it has a reproductive advantage over the native species. As beautiful as they are, this plant has the ability to girdle and overtop adjacent vegetation - often to the detriment of native species. - April Shepperd