Bartonia paniculata
PlantsFamily: Gentianaceae · Genus: Bartonia

Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 3: 17. Courtesy of Kentucky Native Plant Society. Scanned by Omnitek Inc. · public_domain
About
Bartonia paniculata, commonly known as twining screwstem, is a saprophytic, annual or biennial species that grows in acidic, sandy-peaty wetlands.
Summary from Wikipedia
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Growing details and traits for Bartonia paniculata in the Library.
No cultivars in the Library yet — the full profile above covers the species itself.