IUCN threat status:

Not evaluated

Comprehensive Description

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With its smaller pale flowers, Pale-Spiked Lobelia is less showy than some of its better known relatives, such as Lobelia cardinalis (Cardinal Flower) and Lobelia siphilitica (Great Blue Lobelia), but it has better resistance to dry conditions after becoming established. The flowers of these species all share a similar structure, but vary considerably in their size and color. Another species in this genus with small flowers, Lobelia kalmii (Kalm's Lobelia), has more narrow leaves than Pale-Spiked Lobelia. Across different populations of Pale-Spike Lobelia, there is some variability in the color of the flowers, hairiness of the foliage, and the length of the tiny appendages between the calyx  teeth. Return

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© John Hilty

Source: Illinois Wildflowers

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