Any of several North American hoary composite subshrubs (genus Artemisia) (Merriam – Webster)
A shrubby aromatic North American plant of the daisy family. (Oxford Dictionaries)
Any of several aromatic plants of the genus Artemisia esp A. tridentata, a shrub of W North America, having silver-green leaves and large clusters of small white flowers: family Asteraceae (composites) (Collins Dictionary)
Sagebrush: More Than a Weed.