Gentiana rubricaulis Schwein.
Common Name: RED-STEMMED GENTIAN, GREAT LAKES GENTIAN
Coefficient of Conservatism: 7
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb

Widespread in many moist, usually alkaline, sites: shores, interdunal hollows, meadows; bogs and fens; river and stream margins; sandy and marly excavations; alder thickets, coniferous swamps, depressions in pine plains; rock crevices and pool margins on Lake Superior.

The distribution of this northern species centers in the Great Lakes region. Both blue- and white-flowered forms have often been misidentified as G. andrewsii, which is readily distinguished by its long fringed plaits (exceeding the corolla lobes) and prominent, minutely ciliate calyx lobes. The flowers are more often a muddy or purplish blue than in G. linearis, which is usually bright blue.

Locations

Alger County
Alpena County
Antrim County
Baraga County
Benzie County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
Crawford County
Delta County
Dickinson County
Emmet County
Gogebic County
Grand Traverse County
Houghton County
Iosco County
Kalkaska County
Keweenaw County
    Including Isle Royale
Leelanau County
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Marquette County
Menominee County
Oscoda County
Roscommon County
Schoolcraft County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 13, 2017. http://www.michiganflora.net/species.aspx?id=1395.