Guess that Invasive Plant (4/5)Online version GAME 4/5: Guess the native Charles River Plant using the clues to the side of the image! Then, advance to the next game using the arrows at the top of the page! by Charles River Conservancy 1 Invasive woody vine with characteristic red and yellow berries Hints 1 Can form thick masses of vines that crush trees and shrubs below 2 Vines can strip the tree of its bark while twining around the trunk, a process that arborists call ‘girdling’