Geum macrophyllum

Geum macrophyllum, commonly known as largeleaf avens or large-leaved avens, is a perennial flowering plant native to Kamchatka, northern and central Japan, and North America, where it occurs from the Arctic south through the northern United States, extending along the Rocky Mountains to the Sierra Nevadas of California and as far south as Northwestern Mexico. It is even more distinctive in fruit than in flower, with spiky spheres of reddish styles. The fruits are a ball of tiny velcro like hooks that catch on clothing and animal hair....read more on Wikipedia.