Millet (scientific name: Setaria italica): Gramineae. In ancient times, it was called millet and millet, also called beam. Panicum miliaceum; The culm is stout, with few tillers, long and narrow lanceolate leaves, obvious midvein and veinlets, and fine hairs; Spike panicle; The ear length is 20 ~ 30 cm; Spikelets are clustered on the tertiary branches, and spikelets basically have bristles. There are hundreds to thousands of seeds per ear, and the seeds are very small, with a diameter of about 0. 1cm. When the ears of grain mature, they are generally golden yellow, the seeds are oval, and most of them are yellow. After peeling, it is commonly called millet. The shell of millet is white, red, yellow, black, orange, purple and other colors, commonly known as "colorful millet". Widely planted in temperate and tropical regions of Eurasia, the middle and upper reaches of the Yellow River in China are the main planting areas, and a small amount is also planted in other areas.

Pulsatilla multiflora, alias Setaria viridis, belongs to Gramineae and Millet. Roots are whisker-like, and tall plants have supporting roots. The base of the stalk is erect or bent, with a height of 10- 100 cm and a diameter of 3-7 mm. Leaf sheaths are loose, hairless or sparsely pilose or verrucous, with long and dense woolly cilia at the edges; Has the effects of expelling pathogenic wind, improving eyesight, clearing away heat and promoting diuresis. Born in the wilderness and roadside below 4000 meters above sea level, it is a common weed in dry land crops.