Its characters of calyx, corolla tube, upper corolla lip, and capsule are consistent with the original description. 它的花萼,花冠筒,上面花冠唇和蒴果的特征与原始描述一致。
According to the original description, the leaves are entire, but plants from Xinjiang differ in having sparsely crenulate leaves of slightly thin texture. 根据原始描述,叶全缘,从新疆采的植株却具稀疏细圆齿的叶片,且稍薄。