Cangzhu, a common Chinese crud drag, are the rhizomes of Atractylodes lancea and are often used to eliminate dampness, strengthen the spleen, dispelle wind and cold and relieve exterior syndrome, which widely grow in China, such as hubei, jiangsu, henna, hebei, shandong, shanxi, liaoning provences, et al.The essential oil components in A. lancea have been reported as the pharmacoloyicall active compounds. It is found that there were great variation ahout the essential oil components of A. lancea, which had ...