Spearmint.

Lip-shaped mint is a perennational herb. Its above ground part can be used to extract the
oil preparation
, is an important aromatic crop. Roots are thick. The ground stem is upright, dark green or purple, about 0.5 to 1 meter high, multi-branched, hairless. Leaves to life, egg-shaped moment round. The leaves are wrinkled, the leaves have adenoid spots on the back, and the leaf edges have sharp jagged teeth. Umbrella flower sequence, dense top to produce spike-shaped, small flowers, white or lilac, July to August flowering. Each flower has 4 small nuts. Chromosome number 2□ 48. Native to the Mediterranean Sea. This species may be a homonyngth polypic of some kind of mint or a heterogene multiple after the hybridization of several mints.

was born in the area of 40 to 48 degrees north latitude. In the 1970s, the United States accounted for about 80 percent of the world's total production, mainly in Idaho, Indiana, Michigan, Washington and Wisconsin. China's main origin of Lilan incense in Jiangsu, Anhui, Jiangxi, Henan, Zhejiang, Shanghai and other provinces and cities. Shanghai and Nantong, Jiangsu Province, are the main processing places for Lilan oil.

there are more than 190 kinds of ingredients, but the main content of celery ketone (Tibetan fennel ketone) about 50 to 65%, followed by lemonene, the content of about 9 to 15%. The balsamic oil is mainly used as a toothpaste flavoring agent, as well as as as chewing gum ingredients, can also be used as candy flavoring agents and drug flavoring agents. Used to match pharmaceutical agents have an exciting, wind-repellent effect.