A strong woody perennial climbing vine. The stems are from 10-30 feet long, climbing by means of axillary tendrils. Leaves are cleft with 2-3 slightly toothed lobes. The solitary, axillary flowers are white with a purple, blue or pink calyx crown with numerous threads radiating from the center. The fruits are egg-shaped, the size of a small chicken egg. When stepped on they pop. Native to eastern and central U.S. Often cultivated in cooler climates.