Blue VervainVerbena hastata
From Nearctica
Identification: Flowers violet-blue to slightly pinkish, small, with a fused corolla and 5 free petal lobes. Flowers arranged in a series of elongate, highly branched flower spikes. Only a few flowers open at any one time. Stem and leaves slightly hairy. Leaves in opposite pairs, elongate-ovate with distinct petiole and coarsely toothed outer margins. Plant 3 to 5 feet in height.
Distribution: Throughout eastern North America.
Habitat: Blue Vervain is found along roadsides, the banks of rivers and lakes, and in thickets.
Flowering period: July to September.
