Symphyotrichum foliaceum (formerly Aster foliaceus) is a species of flowering plant in the family Asteraceae native to western North America. Commonly known as leafy aster, leafy-bracted aster, and alpine leafybract aster, it is a perennial, herbaceous plant that may reach 10to in height. Its flowers have violet to purple ray florets and yellow disk florets. Four varieties were accepted by Plants of the World Online (POWO), as follows: S. foliaceum var. apricum, S. foliaceum var. canbyi, S. foliaceum var. cusickii, and S. foliaceum var. parryi. The autonym is S. foliaceum var. foliaceum.