This photo of Bull Thistle [Cirsium vulgare] was taken at Trout Lake, Hermon, NY. It’s a member of the Aster (Asteraceae) family. Reader’s Digest North American Wildlife, page 463, shows it as being found across Canada, Mexico, and the United States. USDA Plants Listing: https://plants.usda.gov/home/plantProfile?symbol=CIVU
