Rock fringe (Epilobium obcordatum), in rocks. 
<dl><dd><ul><li>In Pioneer Basin, Sierra Nevada, California.</li></ul></dd></dl>
<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>