Verbena L.

Plants erect not rooting at nodes Verbena
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Leaves sessile, often stem-clasping, coarsely serrate, 3–18 cm long. Spikes dense both in flower and fruit. Scabrous to hairy perennials
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Bracts conspicuously longer than the calyx; corolla tube twice as long or longer than calyx
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Bracts not or only slightly longer than the calyx; corolla tube twice as long as calyx