Solidago macrophylla
Solidago macrophylla, the largeleaf goldenrod or large-leaved goldenrod, is North American species of herbaceous perennial plants of the family Asteraceae. It is native to eastern and central Canada and the north-eastern United States. Some of the populations in Québec and Labrador lie north of the Arctic Circle.
Solidago macrophylla is a perennial herb up to 105 cm tall, with a thick woody rhizome. Leaves can be up to 15 cm long. One plant can produce 110 or more small yellow flower heads, mostly on short side branches.