Spring beauty (Claytonia virginica), closeup of two flowers showing pink-veined petals and 5 stamens.  Duke Forest Korstian Division, Durham, North Carolina, USA.
<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>