What plant does the "weatherman" in the flower mean?

There is a wonderful flower growing in Xishuangbanna, China. Whenever a storm comes, many beautiful flowers will bloom. The red petals set off the mountains, forests and cliffs. According to this feature, people can know the weather changes in advance, so it is called rain flower.

Rain flower, also known as red rain curtain, calamus and leek, is an herb flower of Allium in Amaryllidaceae. Its leaves are flat and linear, much like the long leaves of leeks, hanging in an arc.

Scientists found through research that the mystery of rain forecast in Yuhua lies in that before storm warning, the atmospheric pressure was reduced, the weather was sultry, and the transpiration of plants was enhanced, which made the bulbs storing nutrients produce a lot of hormones and prompted them to bloom many flowers.

Coincidentally, there is a magical flower growing in Australia and New Zealand. It can also predict sunny days and rain, so people call it Rain Flower. This kind of flower is very similar to the chrysanthemum in China. Petals are also very long and have different colors. The difference is that it is 2~3 times larger than chrysanthemum. So, why can newspapers make yuhua district forecast the weather?

This is because the petals of primrose are sensitive to humidity. On the eve of rain, the air humidity will increase. When the air humidity increases to a certain extent, the petals will shrink and tightly wrap the stamens, which indicates that it will rain soon.

When the humidity in the air decreases, the petals will slowly spread out, which indicates a sunny day. Before going out, local residents always read the newspaper Yuhua to learn about the weather, so people affectionately call it the "weatherman".

The working people in our country can also predict the rainfall from the color change of peach blossoms. Because the colors of peach blossoms are different in different years, when the peach blossoms are purple, it means that there is less rainfall in that year; When peach trees have pink flowers, it shows that there was more rain that year.