Clover is the general name of many kinds of three-fingered compound leaf herbs, which mainly includes three categories: leguminous clover (considered to be the most authentic clover) and some species of Oxalis, Medicago and Oxalis.

In many western countries (such as Britain and the United States), clover represents luck because it is considered to be a plant that can only be found in the Garden of Eden. In some countries, clubs in playing cards represent lucky clover. The number of clover represents true love, health and reputation.

Extended data:

Clover is native to Europe and North Africa and is cultivated all over the world. Australia, New Zealand, Britain, Denmark and the Netherlands are the countries that cultivate the most forage varieties. Breeders from Sweden, Germany, the United States, France, Italy, Canada and Poland have also cultivated many famous varieties.

Wild species and cultivated species are distributed in Mengla County in northern China and Shangzhi County in Heilongjiang Province. There are about 10 wild species and introduced species or varieties widely planted in China, and more than 200 introduced species or cultivated varieties. In Yunnan province alone, 14 and 162 varieties were introduced and cultivated.

References:

Baidu encyclopedia-clover