Verbena stricta grows
in dry meadows on the plains. Purple flowers are in long spikes. Leaves are thick
and toothed. Plants grow as tall as 3 feet.
Compare to Verbena hastata, which grows
in wet areas. V. hastata has narrower spikes and smaller flowers.
It also has longer leaves, often with basal lobes. The difference in habitats
is enough to separate the species.