Seeds

"These strange alien structures are among the seeds and pollen conserved at the Kew Millennium Seed Bank. Seeds from more than 10% of the world's flowering plants – around 30,000 species – have been collected in the decade since the bank was established." From the Guardian.

Shown: Seed of Castilleja flower, popularly known as Indian paintbrush or prairie-fire.

More images from the Guardian.
Kew Millennium Seed Bank.