Roots and Heads
[Photo ©2010, Chicago, Illinois, USA]
The photo may be a bit off, though I like it, but everything else is point on! Teasels are probably ignored, or overlooked, because they appear mostly in out of the way spots like roadsides or empty lots. As I do a little research on these plants I find that their roots can be used as a herb or the heads can be used for wool fleecing. Talk about a well rounded plant!
(Larger photo, 2x, available here https://williamboschdotcom.files.wordpress.com/2010/07/teasel1000.jpg)