About Gentiana clausa Raf.
Gentiana clausa, a species that shares the common name "bottle gentian" with several other plants, is a flowering member of the Gentianaceae family that grows 1 to 2 feet tall. It is native to higher-elevation moist meadows and woods in Eastern North America, ranging from Quebec in the north, through the Appalachian Mountains, to North Carolina and Tennessee in the south. It produces paired lanceolate leaves that usually grow on unbranched stalks. It bears blue flowers that stay closed or nearly closed, a feature that gives the species its Latin specific name. Its flowering period runs from late August to October.
