Canada Thistle (Cirsium arvense) 2016-5-31 White Clay Creek SP, DE

This thistle isn't nearly as prickly as some of the others.
-bracts are tipped purple and the tip peels back, but tips aren't spined, sometimes the whole bract is purple
-the stem mostly doesn't have spines
-the spined leaves at the bottom have deep lobes but less lobed nearer the top of the plant