From Flora of Indiana (1940) by Charles C. Deam
My only specimen is from the grassy border of a dried-up slough in the dunes about a quarter of a mile south of Pine, Lake County (now along Clark Street in Gary about a quarter of a mile south of Lake Michigan). It has been reported also from Porter and La Porte Counties. This species much resembles the next one [Equisetum x nelsonii] and is closely associated with it.
Indiana Coefficient of Conservatism: C = 10
Wetland Indicator Status: FACW
Citation: The vPlants Project. vPlants: A Virtual Herbarium of the Chicago Region. http://www.vplants.org
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