Supplement:
Chestnut, whose real name is chestnut, is rich in varieties in China and can be roughly divided into two categories according to its appearance. One is Castanea henryi, which is mainly produced in the mountainous area of northern Fujian. Chestnut is mainly produced in many provinces in northern China. Shell bucket is big, spherical and prickly, with 2 ~ 3 nuts. Born in shell bucket, it is commonly known as chestnut, which is a specialty of our country and is called "king of dried fruit" and "ginseng fruit" abroad. Sweet chestnuts, as precious fruits since ancient times, are the best among dried fruits. Chestnuts are high starch nuts. Chinese medicine believes that chestnut has the effects of invigorating kidney and spleen, strengthening body and bones, benefiting stomach and calming liver. Therefore, chestnuts have the reputation of "the fruit of kidney". Distributed in Liaoning, Beijing, Hebei, Shandong, Henan, Huanglong County, Shaanxi and other places in China. Chestnuts in Kuancheng, Chengde, Hebei Province and Qianxi, Tangshan, Hebei Province all contain organic iron, so they are famous for their organic chestnuts. Chestnut has strong adaptability, convenient cultivation and management, stable yield and is deeply loved by the masses. Chestnuts are called "hardcore crops" in northern China, and they are good tree species for greening and production.
Branchlets are grayish brown, stipules are oblong, long 10- 15 mm, long-haired and scaly glandular leaves are oval to oblong, long117 cm, 7 cm wide, short to tapering at the top, nearly truncated or round at the base, or Petiole length 1-2 cm. Male inflorescence length 10-20cm, inflorescence axis hairy; 3-5 flowers are clustered together, the female flower 1-3 (-5) grows firmly, and the lower part of the style is hairy. The spikes of mature shell bucket are long and short, sparse and dense. When it is dense, the outer wall of the shell bucket is completely covered, and when it is sparse, the outer wall is visible. The diameter of the shell bucket is 4.5-6.5 cm. Nuts are1.5-3cm high and1.8-3.5cm wide. ?