Dried seeds of <i><a href="//commons.wikimedia.org/wiki/Senna_obtusifolia" title="Senna obtusifolia">Senna obtusifolia</a></i>, with a United States penny at left for comparison. Photo taken in Kent, Ohio with a Panasonic Lumix digital camera (model DMC-LS75).
<a href="//commons.wikimedia.org/wiki/User:Badagnani" title="User:Badagnani">Badagnani</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>