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Moist sandy or peaty soils. Bogs and fens.
In fens can often be found with Lobelia kalmii and Parnassia glauca
Most of the eastern half of the US
Annual. Leaves opposite, lance-linear. Corolla 5-lobed, pale pink to purple, the lower lobe enlarged and often spotted with darker purple.
Flowers August to October
Wetland Indicator: Facultative Wetland
Found in a variety of moist habitats from acid to alkaline, but not particularly common.
Swink, F. and G.
Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.
USDA, NRCS. 2002.
The PLANTS Database, Version 3.5 (http://plants.usda.gov).
National Plant Data Center, Baton Rouge, LA 70874-4490 USA
© Michael Hough 2004