Euthamia graminifolia

Euthamia graminifolia, the grass-leaved goldenrod or flat-top goldenrod, is a North American species of plants in the family Asteraceae. It is native to much of Canada (from Newfoundland to British Columbia), and the northern and eastern United States (primarily the Northeast, the Great Lakes region, and the Ohio Valley, with additional populations in the Southeast, the Great Plains, and a few scattered locations in the Pacific Northwest). There are also introduced populations in Europe and Asia....read more on Wikipedia.