Is dandelion a flower?

Question 1: Is dandelion a flower? Compositae can be used as medicine to clear heat. Dandelion is often misunderstood. I mainly say this. It is a compound flower, which consists of small flowers, tongue-shaped flowers and tubular flowers. Tongue-shaped flowers are unisexual and tubular flowers are bisexual.

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Question 2: When do dandelion flowers bloom? Dandelion usually blooms from May to June.

Dandelion, also known as chicory, viola yedoensis and arrowhead, is a famous wild vegetable and Chinese herbal medicine in China, and it is also a seasonal wild vegetable that people have been eating. There are many ways to eat, such as cold salad, soup, stir-fry and side dishes. Although it has been collected for a long time, it has been in the wild and even regarded as a stubborn weed. In recent years, with the in-depth study of its development and utilization value, people's views on dandelion have also changed, from a wild vegetable in the past to a delicious dish on the table of hotels and restaurants, especially the discovery of its medical and health care function, which has attracted the attention of medical experts and nutritionists. There are also a number of medical and health care products. With the application of traditional Chinese medicine, the economic value of dandelion is being fully reflected.

1, botanical characteristics and requirements for environmental conditions

Dandelion is a perennial herb of Compositae with white milk. The root system is straight, deeply developed, solitary or branched, and the peel is yellow-brown; The leaves are flat and basal, arranged in a rosette shape, strip-shaped lanceolate or obovate, about 10 cm long and 3 cm wide, and the leaf margin is pinnately divided; The stem is cylindrical and hollow, drawn by leaves, with a flower head, several calyxes and yellow tongue-shaped florets at the top; When the fruit is ripe, the head is like a white fluff ball, and the achene with crown hair can fly with the wind; The seeds are brown, with 1000-grain weight 1 ~ 2g. Dandelion usually blooms in May-June, with wide adaptability and strong resistance. Cold and heat resistance, early spring ground temperature 1 ~ 4℃ can germinate. The optimum temperature for seed germination is 15 ~ 20℃, and germination is slow above 30℃, and the optimum temperature for leaf growth is 20 ~ 22℃. The light requirement is not strict, but medium light and short light are beneficial to the growth of branches and leaves; It has strong drought resistance and waterlogging resistance, and can grow in various soil conditions, but it grows well in fertile, loose, humid soil with high organic matter content.

2. Utilization value of dandelion

The edible value, medicinal value and nutritional value of dandelion have been highly evaluated and affirmed in medical ceremonies of past dynasties. Dandelion is rich in dandelion alcohol, choline, organic acids, inulin, glucose, crude fiber, VC, VD, carotene and other nutrients. It is also rich in trace elements and minerals, and most importantly, it contains a large number of minerals needed by the human body, such as iron, calcium and potassium. Its calcium content is 2.2 times that of guava, 3.2 times that of Rosa roxburghii, 4 times that of Rosa roxburghii and 3.5 times that of hawthorn. According to Compendium of Materia Medica and China Pharmacopoeia, dandelion is sweet and bitter, which has anti-inflammatory and liver-purging effects and can enhance the body's immunity. Modern medical research shows that dandelion has a strong inhibitory effect on pathogenic dermatophyte Staphylococcus aureus, and has inhibitory and killing effects on many Gram-positive bacteria such as Shigella, Pneumococcus and Diphtheria, and has antiviral, anti-infection and anti-tumor effects. Because of this, dandelion has great market potential for commercial development value.

Question 3: Does dandelion belong to grass or flower? Dandelion is a perennial herb with a height of 10 ~ 25 cm and milky white. The root is long, single or branched, and the outer skin is yellow-brown. Leaves have roots, arranged in a rosette shape, narrowly oblanceolate, with large-headed pinnate or pinnate, triangular lobes, entire or with several teeth, slightly blunt or sharp apex, tapering to a stalk at the base, and slender silky hairs for those without hair. Flowering stems are shorter or equal in length than leaves, elongate when bearing fruit, and the upper part is densely covered with white beaded hairs. The head is simple, the end is about 3.5cm; Dragon; The involucral bracts are herbaceous, green, partly reddish or purplish red, with or without horns and white beaded hairs at the top; Tongue-shaped flowers are bright yellow, truncated at the top, 5 teeth, bisexual. Achenes are oblanceolate, khaki or yellow-brown, with longitudinal edges and transverse nodules. The transverse nodules with medium yield or above have spines, a beak at the top and white crown hairs at the top. Flowering in early spring and late autumn. Born on roadsides, fields and hillsides. Produced all over the country. The whole plant crawled on the ground, with leaves like shepherd's purse, but slightly larger, without erect stems, and flowers emerged from the center of the plant.

Question 4: What color is dandelion? When does it open yellow every day? Flowers bloom in spring and autumn every year, and one day does not open and close with time. Each flower blooms for one to three days.

Question 5: What are the characteristics of dandelion flowers? Question 1: Impatiens balsamina fruit, Bidens bipinnata fruit, tomato fruit, dandelion fruit? Answer: Bidens bipinnata fruit: there are small thorns. Mode of transmission: hanging on animals. Tomato fruit: juicy and tender. Mode of transmission: eaten by animals and pulled out in the Woods. Dandelion fruit: very light. Mode of transmission: by wind. Question 2: What is the spread mode of tomato fruit? Answer: eaten by animals, pulled out.

Question 6: What kind of flower is this? Is it a daisy? Or dandelion flowers? Dandelion is not, daisies are not so hairy, dandelions are hairy, but the leaves are not so big and the flowers are not so big.

Question 7: What color is dandelion flower? Wu Hongli, Wei Zi Primary School, Yangxun Bridge, Shaoxing County. That day, I led the children to learn the article "Golden Grassland" in the fifth volume of People's Education Edition. When I asked everyone to ask questions, a child asked, "Teacher, there is something wrong with the text. Dandelion flowers are obviously white, but the book says they are golden. And I also played dandelion, which is really white. " Unexpectedly, his words caused many children to sing. A child stood up and pointed to the illustration for me. I took a closer look and understood more than half. Fortunately, I am also a native rural teacher, and I am very familiar with dandelions. But I still said to the children in a very appreciative tone: "You are so brave that you dare to doubt the words. You are really good! However, is it really a mistake in the text? We can't jump to conclusions about this problem. Please read the text carefully and silently. I believe you can find the truth. " Therefore, children don't need me to remind them to read and think by themselves, and some sit at the same table and discuss and argue gently. I silently hope that the children can figure it out for themselves. Five minutes have passed, eight minutes have passed ... the children's quarrel is getting louder and louder. I learned about the content of their argument during my trip. So I asked again, "So what?" Some children said noisily, "Yes, dandelion flowers are golden. That's what the book says, and it's also drawn in the illustration. " However, some children plausibly said, "In this article, two brothers play with dandelion flowers and blow them when they are in full bloom. Look, in the illustration, isn't the white dandelion flying in the sky? " I let the children speak freely, which is somewhat ambiguous, because the illustrations are all white and yellow, and they think dandelion may have two colors. A clever child asked me, "What color do you think this is, Miss Wu?" I think it's my turn to speak. So, I cleared my throat and said, "I know dandelion flowers are really golden ..." Before I finished, the children with the first view couldn't wait to cheer. I made a gesture of stopping, and then asked, "What do you think is the white plush ball that the two brothers played in the text and the illustration?" Now I have them. Children with a second opinion take the opportunity to provoke. I quickly explained: "That white tuft is not a flower, but the hair on dandelion seeds. Some impatient dandelions bloom early and set seeds early. Dandelion flowers can bear many tiny brown seeds. In order to let the seeds settle down all over the world, each seed has a bunch of white fluff so as to float away with the wind. The more seeds, the bigger the white fluff. " Oh, I see. The children finally understand. Although the wind and waves about whether dandelion flowers are yellow or white have subsided. But I think there are many reasons for this storm. First of all, children are careless in reading, do not ask for answers, and even swallow dates. Secondly, nowadays, children's body and mind are getting farther and farther away from nature, and teachers and parents attach importance to their achievements, even children in rural areas are no exception. Thirdly, I think there are some shortcomings in the writing of this paper: on the one hand, I am not clear about flowers and seed fluff; On the other hand, the order of natural paragraphs is not appropriate. If the second natural segment and the third natural segment can be arranged interchangeably according to the natural law that plants bloom first and then bear fruit, it will not cause such a big misunderstanding among children.

Question 8: Is dandelion a flower? Dandelion generally refers to its spherical seeds and Mao Mao. It must be a plant with big serrated leaves and yellow flowers that turn into white balls.

Question 9: Is dandelion a flower? Compositae can be used as medicine to clear heat. Dandelion is often misunderstood. I mainly say this. It is a compound flower, which consists of small flowers, tongue-shaped flowers and tubular flowers. Tongue-shaped flowers are unisexual and tubular flowers are bisexual.

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Question 10: What are the characteristics of dandelion flowers? Question 1: Impatiens balsamina fruit, Bidens bipinnata fruit, tomato fruit, dandelion fruit? Answer: Bidens bipinnata fruit: there are small thorns. Mode of transmission: hanging on animals. Tomato fruit: juicy and tender. Mode of transmission: eaten by animals and pulled out in the Woods. Dandelion fruit: very light. Mode of transmission: by wind. Question 2: What is the spread mode of tomato fruit? Answer: eaten by animals, pulled out.