The little flowers of roundhead appear in compact heads that approach an inch long. Those heads tend to cluster at the top of stems that may be chest high. That makes them an ideal tall-grass-prairie flower, up there competing for attention. But they'll settle for almost any drier, open, often sandy place in AL, AR, CT, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, NE, NH, NJ, NY, OH, OK, PA, RI, SC, SD, TN, TX, VA, VT, WI, WV, NB, and ON. Ives Fen Preserve, Lenawee Co MI, 8/24/13.