Slideshow and species account to come.
For more information:
https://gobotany.nativeplanttrust.org/species/verbena/hastata/?pile=non-alternate-remaining-non-monocots
https://www.marylandbiodiversity.com/view/2697
https://www.friendsofthewildflowergarden.org/pages/plants/swampvervain.html
http://www.illinoiswildflowers.info/wetland/plants/bl_vervain.htm
https://en.wikipedia.org/wiki/Verbena_hastata
