Definition: Blue essential oil obtained by steam distillation from the fresh or dried flower-heads or flowering tops of Matricaria recutita L. (Chamomilla recutita L.Rauschert).

• 本品为菊科植物母菊Matricaria recutita L.；的新鲜或干燥的头状花序或开花的顶端经水蒸气蒸馏获得的蓝色挥发油。