So far, I have only seen this biennial growing in the bog garden next to the big pond at Jenkins Arboretum in southeast Pennsylvania. It does grow in moist sites, marshes, and poorly drained fields, but also in upland places as rocky glades and roadsides. It is native from Texas to Florida up to New York & Connecticut to the Midwest. It is a threatened or endangered species. It has 4-anguled, winged, hairless stems, and has some opposite arranged leaves near the top of the plant. It is pollinated by bees and butterflies.

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