IUCN threat status:

Not evaluated

Comprehensive Description

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Description

This native perennial plant is 1–1½' tall and unbranched. The central stem is largely hairless, except for a few hairs near the inflorescence. The leaves are up to 8" long and 1/3" across, becoming smaller and fewer as they ascend the stem. These leaves appear whorled because of their density, but they actually alternate around the stem.

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Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© John Hilty

Source: Illinois Wildflowers

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