There are many varieties of wolfberry trees, including those without thorns and those with long thorns. There are about 80 species of wolfberry trees, mainly distributed in South America. A few species are distributed in the temperate zone of Eurasia. There are 7 species and 3 varieties produced in China, mainly distributed in the north. Most Lycium barbarum plants have thorns, and thornless ones are rare. The existing varieties in my country are all There are thorns, but the number of thorns is different. Only some old branches have thorns. Lycium barbarum tree is a multi-branched shrub plant of the genus Lycium barbarum in the Solanaceae family. It can reach more than 2 meters in cultivation and is distributed at home and abroad.