Perilla.

1 species of lip-shaped zizu genus. Bhutan, India, Central and Southern Peninsula. It is cultivated as far south as Java in Indonesia and east to Japan, Korea and throughout China. Purple su, white suzu is due to cultivation and origin, there is no wild. The leaves are all green for white sequoia, and the leaves are purple on both sides or purple on both sides. Wild purple siothes and small nuts are smaller, and leaves are smaller. Often referred to as chicken crown purple or backsue, its leaves have narrow and deep jagged teeth.

a year of herbs. Stems are long and soft hairs. Blades wide ovoid or round, with short or protruding tips at the first end, rough jagged edges, purple on both sides or purple below the cyan on top, hairy; The part is long soft hair, there are yellow gland points, when the fruit increases, the base side swelling, eaves two lip shape, upper lip width, 3 teeth, lower lip 2 teeth, tooth cap needle-shaped, the inner surface in the throat has soft hair; Small nuts near-spherical, gray-brown, diameter 1.5 mm, with mesh.

the purple stalk leaves contains aromatic oil 0.1 to 0.2%, the main components are purple sousaldehyde, followed by lemon hydrocarbons, ene, etc.; Purple Su for medicinal and spice use, into the medicine part to stems and leaves and sub-real mainly, leaves for hair □, analgesic cough, aromatic gastritic diuretic, there is analgesic, calming, detoxifying effect, can cure colds, seeds can cure cough, sputum, flat wheezing, go stuffy. Leaves are eaten again, and cooked meat can increase aroma. Seed oil for consumption, and anti-corrosion effect.