Artemisia trientata (Sagebrush, Big Sagebrush, Common Sagebrush, Blue Sagebrush, Mountain Sagebrush, or Black Sagebrush) is a shrub or small tree from the family Asteraceae. Some botanists treat it in the segregate genus Seriphidium, as S. tridentatum (Nutt.) W. A. Weber, but this is not widely followed. The name "sagebrush" is also used for several related members of the genus Artemisia, such as California Sagebrush (Artemisia californica).