IUCN threat status:

Not evaluated

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Prostrate Vervain is a weedy little plant that is often overlooked by passersby. The foliage is rather coarse in appearance and the flowers are quite small in size. It is a fine example of a plant that can survive in the harsh conditions of cities, including high temperatures near pavement, trampling underfoot and motor vehicle traffic, air pollution, summer drought, and poor soil lacking organic material. This species can be distinguished from other vervains by its prostrate habit and thick spikes of flowers (at least 2/3" across). Other vervains have an erect habit, with the exception of Verbena angustifolia (Narrow-Leaved Vervain), which has a tendency to sprawl. However, the slender spikes of this species are less than ½" across and its flowers are usually white. Return

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© John Hilty

Source: Illinois Wildflowers

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