Pharmacognostic characteristic features is not only the traditional approach to identify Chinese crude drugs, but also can be regarded as a quality criterion of the same drug.

• 性状特征既是中药材传统的鉴定特征，同时也是质量标准。目前在中药材化学成分研究及化学质量标准制定中，往往忽略了性状特征的质量评价。