<p>purple petals on green vertical stems</p>
<p>Part of the purple pops of color throughout the prairie during the spring and summer.</p>
<ul><li>Keywords: vervain; wildflower; prairie</li></ul>
NPS
Taken on 11 August 2015
<a rel="nofollow" class="external text" href="https://npgallery.nps.gov/">NPGallery</a>