Coefficient of Conservatism:
Coefficient of Wetness:
Unlike many of our species in this genus, not a calciphile, but usually occurring in shallow to often deep (1 m) water of softwater lakes; sometimes, however, in fens; river margins, marshes.
Not as often seen in flower as most of our species, although foliage may be dense on a lake bottom; but the magenta flowers with yellow palate are relatively large and attractive. The species is easily recognized from a distance in the field, with bushy whorls of foliage separated by open internodes. The young leaves, especially, are conspicuously inrolled at the tips and tend to have a basket-like aspect.