White mustard seed, also known as spicy rapeseed, is Latin mustard seed. An annual or dry biennial seed of mustard seed, which is spherical, with a gray-white to yellow surface and a thin and brittle oily seed coat. It is tasteless and spicy. You can take medicine. Location: Anhui, Henan, Sichuan, Shandong and other places. There are many cultivations all over the country.