White heath Aster (Aster pilosus).
Many white heath aster flowers are produced in panicles at the end of stems. Individual flowers are about 3/4 inch in diameter and consist of outer white flowers and a yellow center. White-heath aster is a branching perennial with white and yellow flowers that may reach as much as 5 1/2 feet in height. It is a weed of pastures, forages, and noncrop areas in the USA.
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