& Annual or perennial herb, ~ meters tall. The roots are spindle-shaped, with many fibrous roots, or adventitious roots near the base of the stem. Stems glabrous or slightly pubescent. The leaves are twice pinnately deeply lobed, and the lobes are linear or filamentous. The inflorescence is solitary, the diameter is ~cm, the peduncle is ~cm long. The outer layer of the involucral bracts is lanceolate or linear-lanceolate, nearly leathery, light green, with dark purple stripes, the upper end is long and narrowly pointed, and the inner layer is as long as the inner layer, ~ mm in length, and the inner layer is elliptical and egg-shaped. Shape, membrane. The supporting piece is flat and the upper end is filamentous, almost as long as the achene. Ligue-shaped flowers are purple-red, pink or white. The tongue blades are elliptical and obovate, ~cm long, .~.cm wide, with blunt teeth. Tubular flowers are yellow, ~mm long, with short tubes, and the upper part is cylindrical and lanceolate. Lobe style with short apex appendages. The achene is black and purple, ~mm long, hairless, with a long beak at the upper end and ~ sharp spines. The flowering period is ~3 months, and the fruiting period is ~3 months.
Cosmos also refers to Kelsang flower, commonly known as Kelsang flower in Tibetan areas. The auspicious Kelsang flower grows above an altitude of 10 meters. It is a plant of the Asteraceae family. Its hometown is the boundless prairie of Tibet, Qinghai, western Sichuan and northwest Yunnan. It is regarded by Tibetan people as a holy symbol of love and auspiciousness. The flower is also the city flower of Lhasa, the capital of Tibet. It loves the sunshine on the plateau and can withstand the wind and cold in the snowy areas. The color of the Kelsang flower changes with the seasons. It is beautiful but not delicate, weak but yet upright. Kelsang means happiness in Tibetan, so it is also called the happiness flower.
Because it is easy to cultivate and can grow as long as there is sufficient sunlight, it has become a wild flower that can be seen everywhere. It has various colors and is planted in a large area. When it is in full bloom, it forms a sea of flowers. The flower shape is like a cherry blossom, also known as "Autumn Sakura". ”, deeply loved by the people.
Cosmos is the flower that represents autumn. It was originally a tall herb, but because the stems are easy to bend, many dwarf varieties appeared later. In addition to single-valved varieties, there are also double-valved varieties. In recent years, the colors have become more and more colorful.
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