Can't figure this one out at all. I've been waiting for it to bloom for a few weeks so I could really isolate the flowers, but I'm getting nowhere trying to key it out. There are quite a few of these plants in the forest, so I don't think it's anything rare or spectacular--just puzzling!
Verbena /vərˈbiːnə/, (vervain), is a genus in the family Verbenaceae. It contains about 250 species of annual and perennial herbaceous or semi-woody flowering plants. The majority of the species are native to the Americas and Europe.