https://www.flickr.com/photos/davea2007/55417550716
The little hooks on the outside of the flower (and later seed-head) of burdocks form to grab hold of the feathers or fur of mammals, to spread the ripened seeds well away from the parental plant. The hooks can also cling quite tightly to items of clothing.
On this plant, the hooks have already proved effective in capturing sugar-stealers, thereby interfering with the dispersal of the seeds of thistles which are also common on the LNR. A flock of goldfinches are also busy ensuring that the thistles don’t become too dominant.



