Celastrus orbiculatus (Oriental Bittersweet) is a fast-growing, deciduous, twining, woody vine with rounded, light green leaves, 2-5 in. long (5-12 cm). The foliage turns butter-yellow in the fall. In late spring to early summer, small greenish-yellow flowers appear in clusters on separate male and female plants. Fertilized female flowers give way to round orange-yellow fruits which split open in fall to expose the scarlet seeds.