Cirsium altissimum is a North American species of plants in the thistle tribe within the sunflower family. Common name is tall thistle or roadside thistle. The species is native to the eastern and Central United States, with a range extending from Massachusetts west to North Dakota and south to Texas and the Florida Panhandle.Cirsium altissimum is, as the name implies, a tall herb, sometimes reaching as much as 400 cm (160 inches or 13 1/3 feet). It is a biennial or perennial, blooming only once ...
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* Al information er baseret på offentliggjort videnskabelig forskning