Narcissus tazetta (Daffodil, Chinese Sacred Lily, Bunch-flowered Narcissus) is a perennial ornamental plant that grows from a bulb.

The Chinese sacred lily is neither sacred nor a lily. In the Romanized form of written Mandarin it is called shui xian hua which can be translated as water goddess flower. The botanical designation is Narcissus tazetta v. chinensis, or Ruen.

The isolation of lycorine, pseudolycorine, galanthamine, haemanthamine, tazettine, pretazettine and the new alkaloid narcisine from Narcissustazetta bulbs.

An inhibitor was isolated from the secreted mucilage of Narcissustazetta L. bulbs. Based on X-ray analysis, the inhibitor was identified as narciclasine (NCS), an Amaryllidaceae alkaloid. NCS inhibited seed germination and seedling growth of rice and Chinese cabbage in a dose-dependent manner.