1.Ziziphus jujuba mill var. spinosa (Bunge) Huex H.F. Chowde: This product is the dried and mature seed of Ziziphus jujuba mill var. spinosa of Rhamnaceae. It is a variety stipulated by the National Pharmacopoeia. Mainly produced in northern provinces of China, our province (Shandong) is one of the main producing areas, and it is famous all over the country for its good quality and large output. During the planned economy period, a large number of provinces were transferred to other provinces. The main points of identification are that the medicinal materials are oblate or oblate, with a length of 0.5-0.9 cm, a width of 0.5-0.7 cm and a thickness of about 0.3cm. The surface is purple-red or purple-brown, smooth and shiny, some have cracks, one side is flat, and there is a raised longitudinal line in the middle; The other side is slightly convex, one end is concave, and the linear hilum can be seen. At the other end, there is a small convex junction. The seed coat is brittle, the endosperm is white, and there are 2 cotyledons, which are light yellow and rich in oil. Slight breath, light taste.
2. Identification of counterfeit Yunnan jujube kernel: This product is the shelled seed kernel of Rhamnaceae, mainly produced in Yunnan, Myanmar and other places. The shape of dried seeds is very similar to that of Ziziphus jujuba seeds, which is oblate, flat on one side, without longitudinal lines, smooth and shiny, and the surface is brownish yellow (one of the key points for distinguishing Ziziphus jujuba seeds), and the others are the same as above.