Abstract:On the basis of the morphology of p1ant and geographic distribution, and the content of aristolane type cornpounds and the transformation relatiofl in the essential oil, we consider that N. grandiflora is a primary specics, while N.chinensis and N. jatanlansi have cvolved from this species. Nardostachnol acetate (Ⅵ) has a strong but perssisting woody odor character. Nardostachonc (Ⅲ) has a characteristic sandalwood odor and blends well with rose and muguet fragrances. These two substances are especially suitable for compounding perfumes of rose, rose-sandal and fougere types, and have a very good fixative property; they may be regarded as valuable perfumery materials.