A buddleia, also called a butterfly bush, growing over a fence.
buddleia definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of a genus (Buddleia) of shrubs and trees of the logania family, native to the tropics but commonly grown in temperate regions for their blossoms of purple, yellow, etc.
Origin: Modern Latin after A. Buddle, 17th-c. Eng botanist
buddleia definition by American Heritage Dictionary
See butterfly bush.
Origin: New Latin, after Adam Buddle (died 1715), British botanist.