wild aster having grayish leafy stems and flower heads with narrow pale lavender or violet rayes; of rocky desert slopes California to Arizona and Utah.

• 一种野生紫苑，头状花序，有淡紫色或紫罗兰色边花；生长在加利福尼亚至亚利桑麻和犹他州的多岩石的沙坡上。