Aerosol grass, scientific name Citron, is a plant of Compositae, plants up to 3 ~ 7 meters, thick rhizomes, erect stems, branched extensions; leaves opposite, showing an ovate triangle, apex short and sharp, margin serrated, showing a clear triple veins , Rough on both sides, pubescent and reddish-brown glands, crushed and spurt with pungent odour; head-shaped inflorescences arranged in corymbose; scorpion-cylindrical, ca. 1 cm, sepal three to four; corolla tube, Pale yellow; stigma pink; achenes narrowly linear, ribbed, 5 mm long, shortly hirsute on ribs; crested grayish white, hairy. The clumps of aircraft grasses are perennial herbs or sub-shrubs. Achenes can be transmitted by the winds of the crown hair. The fruit ripening season is mostly dry and windy dry season. The spreading power is strong and the spread is rapid. The seed dormancy period is short and cannot survive in the soil. Long time; in the tropical island of Hainan, it can bloom twice a year for the first time from April to May and the second time from September to October. Aircraft grassland is produced in Central America and is now widely distributed in South America, Africa and Asia. Introduced as a spice plant in Thailand in the 1920s, it was first discovered in southern Yunnan in 1934 and has invaded Hainan, Guangdong, Taiwan, Guangxi, Yunnan, Guizhou, Hong Kong, and Macao. It invades the subtropics. Aerosols can endanger multiple crops and invade pastures. When they grow to 15 centimeters or more, they can significantly erode indigenous species, release allelochemicals, and have strong allergic effects, which can inhibit neighborhoods. Plants can also make insects refuse to eat. Its leaves are poisonous and contain toxic active compounds of coumarins; rubbing the skin with leaves can cause redness and blistering, and eating fresh leaves can cause dizziness, vomiting, and can cause poisoning in livestock, poultry and fish.
[alias] Xiang Zelan
[source] for the Eupatorium sp. Eupatorium odoratum L., belonging to the genus Eupatorium. Harvested in spring and summer, fresh and washed.
[Source form] perennial evergreen subshrubs, high 1 to 3 meters, the whole plant coat, crushing when the leaves and leaves have aroma. Stems erect, with fine longitudinal stripes, greenish yellow or dark brown, new branches green, old branches grayish yellow, white section. Leaves opposite, petiolate. In autumn and winter, flower heads grow on the same stem, and they are arranged in a corymbose shape. The flowers are all tubular. The corolla is light yellow, pink or pale white. Achenes, black, 5-sided, apically bristly crested.
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