A vine that is tropical with beautiful blue-violet flower clusters that is native to Mexico and Central America. Blooms throughout the year. This plant was named by Linnaeus to honor of the young Lord Robert James Petre (1713 -1742) of Ingatestone Hall in Essex, a patron of botany. The specific epithet is from the Lation word 'volubil' meaning "turning", "circling" or "spinning" in reference to the twining method this vine uses to climb.
long elliptic-shaped leaves to 8 inches long that are dark green