White oak (Quercus alba) fallen leaves top and bottom sides, with several of the narrow, shiny dark brown acorns quickly eaten by deer, squirrels, and birds.  Duke Forest, Durham North Carolina.
<a href="//commons.wikimedia.org/wiki/User:Dcrjsr" title="User:Dcrjsr">Dcrjsr</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>