Coefficient of Conservatism:
Coefficient of Wetness:
Nt Fern Al
This is basically a marsh emergent, occurring in water to 6-8 dm deep; also occurring on lake shores, slow moving streams, very wet meadows and swales, ditches, bog margins and sometimes on moist shores. It can grow in understories of swamp forests, but is mostly in sunny sites.
The stems are soft and easily flattened due to the large diameter of the central cavity (the stem like a soda straw in morphology), making this an easily recognized species. Hybridizes rarely with E. arvense to form E. ×litorale, a plant generally intermediate in both habitat and morphology (see E. arvense).