Longan (scientific name: Dimocarpus longan lour.).) is a longan plant in the family Sapindaceae. Evergreen tree, usually more than 10 meters high;The twigs are stout, slightly pubescent, and scattered with pale pores. The petiole is 15-30 cm long or longer;
leaflets 4-5 pairs, thinly leathery, oblong-elliptic to oblong-lanceolate, often asymmetrical on both sides;The petiole is usually no more than 5 mm long. Inflorescences are large, multi-branched;peduncle short;Sepals nearly leathery, triangular-ovate;petals creamy-white, lanceolate, nearly equal to sepals, only slightly pubescent on the outside;
The filaments are covered with short bristles. The fruit is nearly spherical, usually yellowish-brown or sometimes grayish-yellow, slightly rough on the outside, or rarely slightly convex nodules;The seeds are brown, shiny, and all wrapped in fleshy aril. The flowering period is between spring and summer, and the fruiting period is summer.
Longan is native to southern China, distributed in Fujian, Taiwan, Hainan, Guangdong, Guangxi, Yunnan, Guizhou, Sichuan and other provinces (regions), mainly produced in Fujian, Taiwan, Guangxi. It grows in the southern ** zone, likes warm and humid climate, can tolerate short-term frost, and will not freeze to death in the short term under low temperature conditions of 0-4.
The economic use is mainly used as a fruit, because its aril is rich in vitamins and phosphorus, beneficial to the spleen, brain health, so it is also used in medicine;The seeds contain starch and, after proper treatment, can be used to make wine;The wood is solid, very heavy, dark reddish-brown, resistant to water and moisture, and is an excellent timber for shipbuilding, furniture, and joinery.
Medicinal: The fruit is rich in nutrients, is a precious high-grade tonic, longan medicinal first contained in the "Shennong Materia Medica" warm, sweet taste, with the function of nourishing the heart and spleen, nourishing blood and soothing the nerves. It is mainly used for the treatment of qi and blood deficiency, palpitations, forgetfulness, insomnia, blood deficiency and chlorosis, as well as frailty in middle-aged and elderly people, hypertension, hyperlipidemia and coronary heart disease.
Economical: The economic use is mainly used as a fruit, the seeds contain starch, and after proper treatment, it can be used to make wine;The wood is solid, very heavy, dark reddish-brown, resistant to water and moisture, and is an excellent timber for shipbuilding, furniture, and joinery.
Green pomelo net seedlings, click to understand