Mountain spiraea (Spiraea densiflora), closeup of flowers and buds.  Along trail from Mosquito Flat to Ruby Lake, John Muir Wilderness, Sierra Nevada, 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>