Mystery Picture 100330

Well, we didn't have any luck identifying the kids in the previous mystery picture. Today, though, we have something a little more unusual.


This picture was from today's proofsheet post. I would assume they are atriplex seeds, but, well, I know what some of you might say if I did that. So, let's put the question out there. Does anyone know what these are and why there is a picture of them?