The largest leaf
In the Amazon river basin of Brazil, people can often see large green leaves floating on the water. The largest round leaf in the world is the leaf of Wang Lian, a famous plant of Nymphaeaceae. Wang Lian leaves are surprisingly large, with a diameter of 2-3 meters and a maximum diameter of 4 meters. Wang Lian leaves float on the water, and the edges of the leaves are rolled up, which looks like a large shallow tray with high load, and can easily hold a child. The largest lotus leaf can bear 70 kilograms. Why are the leaves in Wang Lianli so buoyant? This is because its leaf area is large, and there are radial thick veins from the center to the periphery, forming a solid scaffold; There are also many arc diaphragms between the veins, which are divided into air chambers, further increasing its buoyancy on the water. Therefore, Wang Lianye has a strong endurance. In recent years, scientists have discovered another wonderful use of Wang Lian-it can purify river water. Fungi and bacteria around the roots of Wang Lian can decompose the organic matter in the river water and absorb the toxic substances in the river water, thus purifying the river water.
The biggest flower
The King Flower, also known as Raffles Flora, was first discovered by Raffles, a British botanist, in the tropical forest in southeast Sumatra, Indonesia in May 2005. The average weight of Dawanghua is about six or seven kilograms, and its diameter is about 1 meter. The maximum diameter is about 1.4m, and the maximum weight is 30-40kg. Petals are red or purplish brown and contain a lot of pulp. Each petal is about 30-40 cm long and 20 cm wide. The central part of the flower is very special. It looks like a washbasin. If you use it to hold water, it can hold six or seven kilograms. Surprisingly, as the "flower king of the world", it not only smells bad when it blooms, but also emits a foul smell, which makes people turn pale when they smell it, and attracts a group of friends with the same odor-flies and beetles. Another strange thing about the king flower is that it has no roots, no stems and no leaves, which is hardly like a plant. Although it is the king of flowers, it can live a parasitic life. It can only grow if it is attached to climbing vines of Vitaceae.
The largest tree
There are endless forests on the western slope of the Sierra Nevada in California, USA. This vast forest is composed of the world-famous giant sequoia, which is known as the "Giant Sequoia Empire". Giant sequoia is a giant in the plant kingdom, belonging to Oleaceae and an evergreen tree. It grows unusually tall, reaching 60- 100 meters in maturity, up to 142 meters in maximum and 12 meters in diameter. The life span of trees is also very long, many of them are two or three thousand years old, and there are even ancient trees that are 5,000 years old. Therefore, it is also called "Grandfather of the World" tree. 100 years ago, people discovered this giant tree, which was called "Mamun Tree" or "California Pine" because of its strange leaves. In the Giant Sequoia Empire, the most famous giant tree is located on the highway on the west side of the Sierra Nevada. According to the survey, this big tree is over 5,000 years old, with a total weight of 2.8 million kilograms, which is equivalent to the weight of 450 African elephants, the largest animal on earth, the blue whale, needs/kloc-0.5 to approach its weight.