Deciduous tree, up to 30 meters high, with dark brown bark and longitudinal crack. Branchlets are thinner, with a diameter of about 65438 0.5 mm. Leaf blade is broadly lanceolate to ovate-lanceolate, 7- 12 cm long and 2-3.5 cm wide, the apex is gradually pointed, the base is round or broadly wedge-shaped, slightly inclined, the leaf margin has spiny serrations, and it is yellow when it is young, with no hair on both sides of the back, or only the axils of the back are hairy, with12-/kloc-0 on both sides. The petiole is 0.5- 1.5 cm long. The male inflorescence is 4 cm long and the inflorescence axis is pilose. The sucker is cup-shaped, covering nuts about 1/3, with a diameter of about 1.5 cm and a height of about 0.8 cm. Bracteoles on the upper part of the cupule are linear, about 5 mm long, straight or recurved; The bracteoles below the middle part are in the shape of the Yangtze River Delta, about 3 mm long, close to the shell wall and puberulent. Nuts are oval, with a diameter of 1.3- 1.5 cm and a height of 1.5-2.5 cm, with hairs at the top. Fruit umbilicus microprotrusion, about 5 mm in diameter. The flowering period is March-April, and the fruiting period is 9-65438+ the following year1October. ? English name Goose Foot, Figleaved Goosefoot, Koakaza? The scientific name is Chenopodium serotinum Linn. Last name Chenopodiaceae Chenopodiaceae? Also known as barnyard grass, Chenopodium album, Cynanchum komarovii, amaranth, barnyard grass, amaranth, barnyard grass, powder and ash medicine. ? Origin: Siberia, Japan and Europe? In fallow paddy fields or vegetable gardens, flocks of gray-leaf green onions can be found. ? Usage: Seedlings, tender stems and leaves, and flower heads are all delicious wild vegetables for cooking, which can be fried, boiled or pickled. Medicinal: The whole herb has the effects of eliminating dampness, detoxicating, relieving fever and stopping diarrhea. Treat ulcer, swelling, scabies, skin itching, hemorrhoids, constipation, etc. Nature and taste: whole grass: sweet, bitter and cool. Efficacy: whole grass: clearing away heat and promoting diuresis, relieving itching and penetrating rash, detoxifying and killing insects. Can be used for treating wind-heat common cold, lung-heat cough, diarrhea, bacillary dysentery, urticaria, scabies, eczema, white scar wind, insect bite, damp toxin and scabies. ? The stem is erect, with many branches, about 30~60 cm high. ? Leaves alternate, petiole slender, leaf blade triangular-ovate or triangular-elliptic, margin undulate-serrate. The back and shoots of leaves are covered with green and white powder frost. ? Flowers are densely clustered, consisting of many small gray-green flowers, which are borne at the top and axils of leaves. The flower is gray-green, sessile, with 5 perianth and 5 stamens. ? Fruit, fruit, cell, oblate. Seeds black, discoid. ? Characteristic panicum miliaceum, the whole plant has a special taste, with erect stems and many branches, with a height of 30 ~ 60cm；; Leaves alternate, slender stalk, long 1~3 cm, triangular oval, long 2~5 cm, wide 1~3 cm, and wavy serrated edge. Small flower clusters form spikes, terminal or axillary, with gray-green flowers, 5 perianth, no petals and 5 stamens. The fruit diameter is about 1 cm, and the seeds are small, black and discoid. As a millet, Scolopendra microphylla quickly completed its life cycle of germination, growth, flowering and fruiting in a short fallow period. During the farming period in late spring and autumn, the seeds enter the dormant period, and they know how to cooperate with farmers' work and rest, so that they will not be regarded as annoying weeds. In fallow rice fields or vegetable gardens, groups of gray-leaf green onions can certainly be found.