three species of Echinacea

• 松果菊

three species of Echinacea的用法和样例：

例句

1. Tissue Culture and Rapid Propagation of Echinacea angustifolia DC.
   狭叶松果菊的组织培养与快速繁殖。
2. The herb extract echinacea has immune-enhancing properties.
   松果菊属草药提取物也提高免疫力。