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1. 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.

2. Millet is millet. Thick fibrous roots. The culms are stout and erect, with a height of 0. 1- 1 m or higher. Leaf sheaths are loosely wound around the stem, with dense verrucous hairs or hairless. The hair is close to the back where the edge meets the leaves, and the edge has dense cilia. The ligule is a circle of cilia; Leaf blade is long lanceolate or linear lanceolate, length10-45cm, width 5-33mm, sharp apex, blunt base, rough upper surface and slightly smooth lower surface.