There are many wild plants in the countryside, so most of the farmers living in the countryside have seen all kinds of wild grasses, and once they mention which kind of wild grass they have, they will tell you about the characteristics of the wild grass like a family treasure. But for citizens living in the city, they will feel very unfamiliar with all kinds of weeds, and if they mention which kind of weeds they are, I am afraid they will not know.

In our countryside here, there is a weed that does not grow leaves, this wild grass rhizome is upright and transverse, black-brown, nodes and roots densely yellow-brown long hairy or smooth hairless. The aboveground branches are perennial branches, the height of the plant can reach more than 60 cm, the diameter of the middle of the aboveground branches is about 3-7 mm, the length between the branches is about 3-10 cm, it is green, and the mature main branches will have branches, but there are not too many branches.
Since this grass resembles a pen shaft, it is called pen shaft grass in our place. However, in some places it is called lock eyebrow grass, earth ephedra or earth thief. After I consulted the information, I learned that the scientific name of this grass is Jiejie grass. In the past, children in some areas would make this grass into a whistle and use it as a whistle.
According to the data, the knotweed is a kind of perennial small and medium-sized plants of the family Wood Thief and the genus Wood Thief, which are distributed in Heilongjiang, Jilin, Liaoning, Inner Mongolia, Beijing, Tianjin, Hebei, Shanxi, Shaanxi, Ningxia, Gansu, Qinghai, Xinjiang, Shandong, Jiangsu, Shanghai, Anhui, Zhejiang, Jiangxi, Fujian, Taiwan, Henan, Hubei, Hunan, Guangdong, Guangxi, Hainan, Sichuan, Chongqing, Guizhou, Yunnan, Tibet and other regions in China, and are an aquatic plant that likes to grow in streams, rivers, seashores, and paddy fields. Sometimes in the roadside, orchards, tea gardens can also be seen, often with crops to compete for nutrients, water and sunlight, can cause harm to wheat, rape, rice, cotton, corn, sweet potatoes and other crops, is a kind of field weeds that farmers and friends hate very much.
However, the knotweed also has certain medicinal value. Ming Li Shizhen said: "This grass has knots and a rough face. Those who cure wood bones, use it to rub it is pure, and the thief of Juyun wood is also. ”
In the "Grass and Wood Convenience Party", it is said that the knotted grass has "ventilation, blindness, benefit of the nine tricks, treatment of falls, elimination of stagnation, stop coughing phlegm." The "Sichuan Journal of Traditional Chinese Medicine" said: Jiejie grass can "purify the heart, remove hot flashes, and scatter clouds." Cures bursts of fire eyes, astringent pain, tears and red eyes, and treats nosebleeds. In the National Compilation of Chinese Herbal Medicine, it is said that the knotweed has a certain effect on "epistaxis, hemoptysis, gonorrhea, menorrhagia, intestinal bleeding, urethritis, hemorrhoid bleeding, bruises, knife wounds, and fractures". It can be seen that the knotweed still has certain medical value.
However, according to modern medical determinations, the knotweed is a poisonous plant, and its toxicity is spread throughout the plant, and it has been included as a poisonous plant in the Chinese plant atlas database. Therefore, just in case, adults should teach their children that they should never use the grass as a whistle to blow in the future.
It is also said that in recent years, some people have begun to professionally cultivate grass, and they have also achieved good economic benefits. However, planting grass needs to contact the buyer and can only be planted after the purchase contract is concluded, otherwise, it is resolutely impossible to plant. Otherwise, it will cause losses to your own economy.
In short, although it belongs to a field weed, it is also a poisonous Chinese medicinal material and still has certain economic value.