A tropical grass (Cymbopogon citratus) native to southern India and Sri Lanka, yielding an aromatic oil used as flavoring and in perfumery and medicine.

• 柠檬草：一种（香茅香茅属）的热带草，原产于印度南部和斯里兰卡，能从中提炼出一种香油，用来调味或制造香水或药物