Why are the petals of chrysanthemums in a line?

It's genetically determined. Plants, like people, have complex genes.

Different environments and different genes determine the form of chrysanthemums in different environments, which is why chrysanthemums are in a line.

There are many forms of chrysanthemum:

1. Primitive type of chrysanthemum

The traditional chrysanthemum is flat, with the petals spreading outward in amplitude, and at the same time, there is a distinctive center part of the flower.

This category can also be seen in other flowers of the daisy family, including sunflowers, purple wan, dahlias, daisies, echinacea, marigolds, and even dandelions in weeds.

2, the traditional chrysanthemum

China's traditional chrysanthemum, the petals are curled, the flower wrapped into a ball. In the past, Chinese people talked about chrysanthemums and cultivated this kind of chrysanthemum not only with bigger and bigger flowers and more and more colors, but also with long-lasting flower arrangements, which are very popular.

3, tubular chrysanthemum

When the petals of the chrysanthemum become tubular, the pattern is more varied. Because of this tube shape is divided into many kinds, some like spaghetti, some like Yunnan noodle threads as thin as silk.

The following types are clearly spaghetti, and because the front and back of the petals are different colors, they form a two-tone and contrasting pattern, adding interest and beauty.

Note that the petals on these are straight and still extend outward in a radial pattern.

The two species can also be clearly seen as the former is a single petal flower and the latter is compound and has many petals.

In addition because the tubular petals have a larger area at the exit, there are more dark petals and a stronger color contrast.

4, curly chrysanthemum

The following kinds, still rolled up petals (not tubular), and the traditional chrysanthemum is still very similar.

But the petals are rolled up to different degrees, some of the flower will be wrapped solidly, can not see the inside, but some can still see the flower center inside the heart of the flower.

This type of chrysanthemum is somewhat of a reversal of the traditional chrysanthemum form, as the petals are rolled up at different angles and in different conditions, creating different interests.

The two colors, orange-yellow and orange-red, are both traditional Chinese court colors that are often used on brocade fabrics.

5, ladies hairstyle chrysanthemum

The following category is very interesting, very much like the hairstyle of the European court ladies in the Middle Ages, the end of the hair rolled into a small volume, coupled with the pink color, more lovely.

The chrysanthemum petals of this type have become 90% tubular, and the curled ends show the pink color inside. It is also described as a mop for mopping the floor because of its different shapes and hairstyles.

This type is similar to the previous one, but the petals have been rolled into a tube and are very thin. Because of the tender yellow color inside, some of the tubular parts are yellow and the ends are pink, somewhat like bean sprouts.

6, lemon yellow chrysanthemum

The color of this flower in the picture below is like the shade of lemon, and the shape of the flower resembles a lot of Italian glass art products.

7, cheongsam pattern chrysanthemum

The following two reminiscent of the pattern on our cheongsam, very traditional, very classical color, and the color is the ancient symbol of royalty fuchsia and silver.

The petals are not all rolled up into a tube, but the fuchsia color is clearly visible on the front, just to a different degree of exposure.

I hope my answer is helpful