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.
It shares the common name "bottle gentian" with several other species.
Description
Gentiana andrewsii is a perennial herb[4] that blooms in late summer (August to October).[5] The flowers are 2 to 4 cm (3⁄4 to 1+1⁄2 in) long, typically a rich blue color and bottle shaped with fused petals (sympetalous) and closed mouths.[6][7] The flowers are clustered at the top of the plant or in the axis of the top leaves. The stems are 30 to 60 cm (12 to 24 in) long, lax in habit, producing sprawling plants with upturned ends ending with clusters of bee pollinated flowers. The foliage is hairless with a glossy sheen to it.
Gentiana × pallidocyanea (Gentiana alba x andrewsii)
Ecology
Closed bottle gentian occurs in wet to dry-mesic prairies and prairie fens, primarily in loamy soils, but it can also be found in sandy areas, such as near Great Lakes shorelines.[8]
