The "Purple Demon Ji" of the natural calendar of Tianfu (July 17)

You often see it, on the fields, the roadside rivers, on the hillside grass, but you can't call it an accurate name -this is a small thistle, an ancient, extremely tenacious weed.

Among the many weeds, the small thistle is beautiful: the color and flower shape are particularly dazzling, and the purple semicircle ball balls are like "purple demon girls". But in people's mouths, it is given more such a series of aliases: stabbing children, stabbing dog teeth, thorns, gun knives, little evil chickens.

The grass is like its name. This is a thorny "purple demon girl": the small thistle leaves are oval or flat -round inverted lanceolate, the top is blunt or round, and the base is wedge -shaped. The edge of the leaves is a sparse small tooth fissure, or no teeth cracks, and each teeth are golden yellow acupuncture -when picking, they are often tied.

Xiao thistle is an ancient weed. There are records in "Thousands of Gold Fang": "One liter of big, small thistle roots, a fight with a wine, five losers, letting you drink. You can also decorate or make juice." In the countryside People love high -quality wild vegetables.

The vitality of Xiaosi is tenacious and strong. It is generally born near the cultivated land, roadside, and villages. Although it is not necessarily its original intention, to a certain extent, the small thistle has become weeds that endanger crops, which mainly endangers drought crops such as wheat, cotton, soybeans. Because of its well -developed stalks, strong drug resistance, difficulty in preventing and controlling, it is more difficult to prevent and control. big.