The pronunciation of peanut: luò huā shēng.

Arachis hypogaea?L., Arachis hypogaea is an annual herbaceous plant of the Leguminosae family, with nodules at the roots; the stems are upright or creeping, ribbed; the stipules are hairy, and the leaflets are ovate-oblong or obovate. The apex is blunt, the base is nearly rounded, and the edge is entire; the corolla is yellow or golden; the style extends outside the calyx tube; the pod is long, swollen, and the skin is thick; the flowering period is from June to July; the fruiting period is from September to October.

After the groundnut blossoms and is fertilized, the ovary will fall into the dark ground to grow and bear fruit quietly, hence the name groundnut.

Arachis is native to Brazil, South America, and is now widely cultivated around the world. Arachis are mostly grown in China, including Shandong, Hebei, Henan, and the northern parts of Jiangsu and Anhui provinces. Arachis prefers high temperatures and dryness, and is suitable for growing in sandy soil with a warm climate, a long growing season, and moderate rainfall. The propagation method of groundnut is seed propagation.

According to the "Compendium Supplement", it is recorded that groundnuts have the effects of strengthening the spleen and stomach, moistening the lungs and reducing phlegm. It is mainly used to treat spleen deficiency and regurgitation, lactating mothers with less milk, athlete's foot, lung dryness cough, and dry stools. Peanut kernels are rich in fat and protein. They are nutritious foods and can be made into candies and snacks.

Peanut oil is used for food or as an industrial raw material. The oil viscosity can be made into non-staple food or used as feed; peanut shells are rich in cellulose and can be used as raw materials for feed yeast, alcohol and furfural, etc., and have great high economic value. Groundnuts are used as lubricants in the textile industry and as quenching agents in the machinery manufacturing industry.

Arachis is a leguminous crop and one of the main varieties of high-quality edible oil. It is also known as "peanut" or "longevity fruit". Groundnut is an annual herbaceous plant. Originated from tropical and subtropical regions of South America. It was introduced to China around the 16th century and developed at the end of the 19th century.

Since the 1950s, carbonized peanut seeds have been unearthed twice in China, providing physical information that peanuts existed as far back as the Neolithic Age. Therefore, the origin of peanuts still needs further exploration. Regarding the origin of peanuts, there are three theories recorded in the literature: originating from Brazil, originating from China, and originating from Egypt.

According to Brukill's records, Columbus discovered America in 1492. Soon after, Spain sent Oviedo to Haiti as the chief resource officer. Ovido was in Haiti from 1513 to 1524. He recorded that peanuts were grown in large quantities in Indian gardens at that time. Linnaeus' Flora (1753) records that peanuts are produced in Brazil and Peru. Hutchinson records that peanuts are native to tropical America.