This native annual vine has green tendrils (A). The large disc-shaped leaves, of variable shapes, are up to 8 inches across (A.B). The male and female flowers are found separately on the same plant. The male flowers with yellow pollen are shown in image (C) The greenish-white female flowers (D) are in clusters. The elongated fruit is spiny and arranged in clusters as well (E). Identified by its leaf shape and size, and by the spiny fruit.