red osier

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A shrubby North American dogwood (Cornus sericea) having red branches, clusters of small white flowers, and bluish-white fruit.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun common North American shrub with reddish purple twigs and white flowers
• noun Eurasian osier having reddish or purple twigs and bark rich in tannin