A pair of acorns on a branch of white oak (Quercus alba) with the trunk behind.  In Duke Forest, Durham North Carolina, USA.
<a href="//commons.wikimedia.org/wiki/User:Dcrjsr" title="User:Dcrjsr">Dcrjsr</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>