These are often called cornflowers. They're bachelor's buttons here because that was Mom's name for them. I suppose the first name you learn for something tends to stick. But today I have a new word. Archeophyte. This species is native to Europe, and was introduced to the British Isles in ancient times, making them an English archeophyte. Not all bad, since bachelor's buttons is now endangered in its original range. It has been introduced here in more recent times in AL, AR, AZ, CA, CO, CT, DE, FL, GA, HI, IA, ID, IL, IN, KS, KY, LA, MA, MD, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY, AB, BC, MB, NB, NF, NS, ON, PE, QC, SK, and YT. Lenawee Co MI, 6/13/11. Aster family, Asteraceae.