. Overview
4 hysterosaurus chrysanthemum ( galinsoga parviflorah chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum chrysanthemum , also like a humid and sunny environment. Since most of the plant heights are between 10 and 80 cm, they can only reach the knees of the cow, so they are named Aestheca. The stems are thin, the leaves are opposite, and have villi, and the leaves are ovate or oblong ovate.
head-shaped inflorescence hemispherical, long peduncle, hemispherical or wide bell-shaped, ovate or oval inside, small and elegant, golden tubular flowers are surrounded by 4 to 5 white tongue-shaped flowers, and the front end of the tongue is three-fold. From a distance, looks like five white plastic forks inserted on mango pudding , and blooms and bears fruit from July to October every year. It grows widely under forests, valleys, wilderness, riverside, fields, streams or suburban roads.
2. Rapid expansion journey
Ashsop chrysanthemum is native to South America. In 1796, Europeans visited Peru and saw the sausage for the first time. They were attracted by its exquisiteness and chic, and then brought it back to Europe.
Later, the hymnol chrysanthemum was sent to the Royal Botanical Garden of England (Ku Garden) as a " daisy sample". Later, the seeds were spread wildly with the help of wind and other media, and could be seen in drainage ditches, gaps beside the walls, and gradually spread throughout the UK and other European countries.
There are literature records in my country that specimens of Chrysanthemum chrysanthemum were collected in Yunnan and Sichuan in 1915, and then they quickly spread to Guizhou, Tibet, Jiangsu, Gansu, Liaoning, Inner Mongolia and other provinces and regions.
3. Unique growth characteristics
(I) As an annual herb, Chrysanthemum has extremely strong adaptability. single plant can produce 7,000 to 14,000 seeds. The seeds are dark brown and have crests, small and light. They can disperse with the wind and take root. The plants grow rapidly, especially in the peak growth season between June and July every year, which can easily form weed groups. Become an invasive species.
(II) In addition to sexual reproduction, Chrysanthemum will also grow uncertain roots on plants and branches. When these uncertain roots enter the soil, new plants will grow to achieve the purpose of rapid expansion.
(III) The seeds of Chrysanthemum can still germinate and grow at most below 8 cm of soil. Experimental studies have shown that as its seeds increase in soils of different depths of 0 to 8 cm, the germination time is extended, ranging from 2.5 to 12 days; the germination rate continues to decrease, ranging from 68.3 to 39.2%. But overall, even if it is buried underground, some seeds can still germinate and grow, completing the mission of reproduction.
(IV) Under the conditions of low light of , Ashscus chrysanthemum can use light energy to perform photosynthesis , and as much fixed carbon as possible for growth and development, so they often exist in areas with shaded green belts.
(V) Like other invading organisms, Ashsop also has an allelopathic effect, secreting some chemicals that can inhibit the growth of other plants. They are left in the soil through the roots. Over time, other plants are suppressed, leaving only this one plant.
4. Wide use
Although hysopra chrysanthemum is labeled as "weed" and has a bad reputation as "invasive plants", it is not useless. On the contrary, it has certain uses and value in many fields.
(a) Eat . The special fragrance contained in the stems and leaves of Chrysanthemum chrysanthemum stems and leaves are often used as spice plant in South America, used to mix salads, boil soups, cook, etc. In some areas of Africa, people regard it as a green leafy vegetable and pick its tender stems and leaves. In some provinces and cities in southwestern my country, people have also developed various ways to eat hymnol chrysanthemum hotpot, cold sauce and soup.
(II) medicinal .
1. Ashsop chrysanthemum can be used medicinally. The plant contains the natural angiotensin converting enzyme (ACE) , which helps treat heart disease and hypertension ;
2. It has the effect of hemostasis and anti-inflammatory , and it is used to treat tonsillitis , pharyngitis, emergency Yellow-cholangitis and traumatic bleeding have certain therapeutic effects, which can relieve inflammation well, kill bacteria and stop bleeding;
3. It has the effect of in treating eczema , and the method of use is very simple. First wash the stems and leaves of Chrysanthemum chrysanthemum first and then mash them, and apply the oozing juice to the place where the eczema is eczema. You can use it multiple times a day. Slight eczema can be basically cured in 2 to 3 days.
(III) feed . The faint fragrance emitted by Chrysanthemum is attractive to animals and is often used as feed for pigs and chickens, and some cattle can also eat it.
Since Chrysanthemum itself is an invasive species and has these practical values, some people also jokingly call it a species that "failed" invasion.
