Coefficient of Conservatism:
Coefficient of Wetness:
R. W. Smith
Wet places generally: marshy, boggy, and swampy ground; ditches and swales; sandy and rocky shores; clearings and disturbed areas in cedar swamps and hardwood forests; seepy or periodically wet rock outcrops (including limestone crevices).
All Michigan specimens have been referred to subsp. ciliatum [= E. adenocaulon Hausskn.], and none to subsp. glandulosum (Lehm.) Hoch & Raven, a more northern taxon often reported from Michigan [as E. glandulosum]. Dwarf specimens, with a tendency to nod at the tip, from Drummond Island identified by P. A. Munz as E. leptocarpum var. macounii. have been identified by P. C. Hoch as E. ciliatum.
This common species is not always easy to distinguish from E. coloratum. Hybrids [E. ×wisconsinense Ugent] have been reported from Wisconsin, and a few Michigan collections are apparently this hybrid.