Gentiana andrewsii
PlantsFamily: Gentianaceae · Genus: Gentiana

Robert H. Mohlenbrock @ USDA-NRCS PLANTS Database / USDA NRCS. 1995. Northeast wetland flora: Field office guide to plant species. Northeast National Technical Center, Chester, PA. · public_domain
About
Gentiana andrewsii, the bottle gentian, closed gentian, or closed bottle gentian, is an herbaceous species of flowering plant in the gentian family Gentianaceae. Gentiana andrewsii is native to northeastern North America, from the Dakotas to the East Coast and through eastern Canada.
Summary from Wikipedia
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Growing details and traits for Gentiana andrewsii in the Library.
No cultivars in the Library yet — the full profile above covers the species itself.