If you bring them home un-opened, you can set them in some water and wait for a few days to watch them spring open. Once they're sprung, they look like this:
I grabbed these by examining what was sticking to the hem of my maxi skirt after our nature study outing! (Not kidding!) There are few different varieties here.
They really know how to hitch a ride from place to place, the sign of any good (invasive) weed. :) They are fun to draw in your nature journal in all their different stages and make a great object lesson on dispersal methods!










