Cirsium vulgare

My pictures are from Indiana, though it also occurs in the southwest. I've seen a number of thistles in New Mexico but haven't had a chance to key them out yet, so I'm not sure if I've seen this species here.

A pseudanthium at University Lake on the north side of Bloomington, IN, 8/19/03.

A cauline leaf at University Lake, 8/19/03.

An achene at University Lake, 8/19/03.

Plant habit with fruit at University Lake, 8/19/03.