Cassia marylandica L. WILD SENNA. Ontario: "Niagara Falls, Wm.
Scott, July 23,1898; M. Wilkes, Aug. 21, 1899, both at TRT," Heimberger
(1955).
(As C. marylandica)
reported as rare in the Niagara Frontier region by Zander and Pierce (1979). On
"Roadsides, river flats, and open fields," pre-1925 collections from
the Niagara area in Ontario are noted by Gillett (in Argus & Keddy (1984).
It is rare in Canada.