Objective: To study the quality and genetic diversity of Chrysanthemun morifolium, the chemical constituents of 20 medicinal chrysanthemum cultivars in China were compared.
Method: Chemical constituents of the 20 cultivars were compared in three types of index: chlorogenic acid, flavonoid and volatile oil.
Result: There are visible differences on the contents of chlorogenic acid, flavonoid and volatile oil between the cultivars.
Conclusion: Each cultivar has its own internal quality, and it is affected by many factors. The chemical constituents of the cultivars showed the genetic diversity in medicinal chrysanthemums of China.