Star felwort (Swertia perennis), closeup of flower spike with blue-violet, darker-veined, 5-petaled flowers.  At 10,620 ft (3,240 m) on small grassy island in stream down from Kearsarge Lakes to Bullfrog Lake, Kings Canyon National Park, 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>