<a href="//commons.wikimedia.org/wiki/Callitriche_palustris" title="Callitriche palustris">Callitriche palustris</a> plants
Steve Hurst @ USDA-NRCS PLANTS Database
<a rel="nofollow" class="external free" href="https://plants.usda.gov/java/largeImage?imageID=cave2_001_ahp.tif">http://plants.usda.gov/java/largeImage?imageID=cave2_001_ahp.tif</a>