Cycad leaf is one of the most common weeds in Northeast China, also known as Rumex Rumex, Rumex Rumex, Rumex Batian and so on. Born in villages, roadsides, wet places and ditches. It is said that it is poisonous and inedible, and livestock never eat it. The scientific name is wrinkled folic acid mold, but the leaves are not wrinkled. It is a perennial herb of Rumex of Polygonaceae. Its root is rhubarb, which can cure diseases, stop bleeding, clear away heat, induce diuresis and relieve constipation. Tin leaf is a better pillow filler than buckwheat husk. The leaves of foreign iron are all green, and the leaves are as big and long as radish tassels, and the heading is green. It's just that after the autumn wind blows, it turns iron red, and the seeds are a bit like elms, so they refuse to land and rustle in the wind.