Carya cathayensis Sarg. is a plant of Juglandaceae and Carya genus. Trees, up to10-20m, DBH 30-60cm; The bark is smooth, gray and smooth; Branchlets are thin, new branches are densely covered with shield-shaped orange glands, and then the glands gradually become sparse. 1 annual branches are purple-gray, and the upper ends are often covered with sparse pubescence, and the lenticels are round and sparse. The compound leaves are 16-30 cm long, and the petiole is covered with hairs and glands when it is young, and then the hairs gradually fall off. The male inflorescence of Zizania latifolia is 3 in 1 bundle, the inflorescence axis is pilose and glandular, and the length is10-15cm. Male flowers with short stalks; Bracts narrow, long elliptic linear; Stamens 2-7. The fruit is obovate and gradually narrows to the base. When it is young, it has 4 narrow-winged longitudinal edges, which are densely covered with orange glands. When it is mature, the glands become sparse and the longitudinal edges become inconspicuous. The stone is obovate or elliptic-ovoid, sometimes slightly flattened, with extremely inconspicuous 4 longitudinal edges, and the top is acute with a 1 short convex point, 20-25mm long and15-20mm in diameter; Endocarp is hard, grayish yellow-brown, 1 mm thick; There is no gap in the diaphragm and the wall; Cotyledons 2 parted. It blooms in April-May and ripens in September.

Distributed in China, Zhejiang and Anhui. It is suitable for growing in sparse forests at the foothills or in valleys rich in humus, with an altitude of 400-1200m.

Nuts are delicious and edible, and they are also used to extract oil. Their oil is fragrant and delicious, and can also be used to prepare fake paint. The shell can be used to make activated carbon; Wood is tough and of high quality.

Carya cathayensis sarg and walnut actually belong to a kind of walnut, but the varieties are different, but the nutrients contained in it are good for health. Walnuts can strengthen the brain, and pecans are also rich in various trace elements such as calcium, phosphorus and iron.

1, walnut

Walnut, also known as walnut and peach, belongs to Juglandaceae. Together with almonds, cashews and hazelnuts, it is called the world-famous "four dried fruits". Walnut kernel is rich in nutrients, with protein15 ~ 20g per 100g, more fat and carbohydrate10g; It also contains a variety of trace elements and minerals such as calcium, phosphorus and iron, as well as a variety of vitamins such as carotene and riboflavin. It is beneficial to the human body and can strengthen the brain. It is one of the nut foods deeply loved by ordinary people. Known as "Long live the son" and "longevity fruit".

2. Hickory

Carya cathayensis, also known as Juglans mandshurica and Juglans mandshurica. It is a deciduous tree belonging to Carya of Juglandaceae, with a height of10-20m and a DBH of 30-60cm. The bark is smooth, gray and smooth; Branchlets are thin, new branches are densely covered with shield-shaped orange glands, and then the glands gradually become sparse. 1 annual branches are purple-gray, and the upper ends are often covered with sparse pubescence, and the lenticels are round and sparse.

3. Carya cathayensis contains linoleic acid, linolenic acid and various trace elements. If people can eat walnut food regularly, they can reduce cholesterol in the blood.

4. Carya cathayensis is also rich in minerals such as calcium, phosphorus, iron, potassium, magnesium, zinc, manganese and other vitamins. Eating it regularly not only has the function of strengthening the brain, but also has the effect of preventing hypertension, cardiovascular and cerebrovascular diseases.

5. Carya cathayensis is rich in vitamin E, which can improve the physiological activity of human skin and contribute to beauty.