Botanical name: Verbena rigida Family: Verbenaceae (Verbena family)
Synonyms: Verbena venosa, Verbena doniana
Slender Vervain is a perennial herb, planted as ground cover plant in gardens. On average it grows to about 2 ft tall. Leaves are opposite, lance-shaped 5-10 cm long, rough to the touch, with coarsely toothed margins. Flowers are borne in 5-7 cm wide cluster of purple to lilac flowers, on stiffly erect spikes. Individual flowers are pinwheel-shaped. Slender Vervain comes from southern Brazil and Argentina.
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The flower labeled Slender Vervain is ...