Results:Thirty constituents were identified from Inula nervosa.That accounts for 94.02% of essential oil.The main chemical components were Thymolisobutyrate,Thymol,Thymolisovalerate,etc.

• 结果:从云威灵挥发油中鉴定出30个组分；占挥发油总量的94.；02%25；主要成分为丁酸百里香酚酯、百里香酚和戊酸百里香酚酯等。