Typical stricta is a widespread northeastern taxon of relatively acid swamps, seeps and boggy sites, without fresh alluvium. The coll. from CALL (WKY) is referable to var. strictior (Dewey) Carey, which appears somewhat transitional to emoryi and occurs more often in calcareous swamps (F). That segregate is not recognized in recent treatments, but variation may deserve further study; 2n = 66-72 in stricta, sensu lato (FNA 23).