Morinda officinalis, also known as Morinda officinalis, Morinda officinalis meat. It is the dried root of Morinda officinalis in Rubiaceae. Location: Guangdong, Guangxi, Fujian and other places. It is one of the four southern medicines. It is oblate and slightly curved, with different lengths and a diameter of 0.5~2cm. The surface is grayish yellow or dark gray, rough, with longitudinal stripes and A cracks, and some skin parts break in the direction A to expose the wood core, which looks like lotus beads. It's hard. Meat is thick and easy to peel. The cut skin is lavender or purple, the wood is gear-like yellow-brown or yellow-white, the wood is tough, the diameter is 1 ~ 5 mm, it is odorless, sweet and slightly astringent.

The best meat is big, fat, thick and purple, and the heart is thin.