Mikania micrantha is a tropical plant in the family Asteraceae known as bitter vine, climbing hemp vine, or American rope. It is also sometimes called mile-a-minute vine (a moniker also used for the unrelated Persicaria perfoliata). It is a vigorously growing perennial creeper that grows best in areas in high humidity, light and soil fertility, though it can adapt in less fertile soils. The featherlike seeds are dispersed by wind. A single stalk can produce between 20 and 40 thousand seeds a season.The species is native to the sub-tropical zones of North, Central, and South America

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