Caltha palustris L. COWSLIPS, MARSH MARIGOLD. "Lewiston; Clifton,
Ontario," Day (1888). Ontario, Queen Victoria Park, Panton (1890). Ontario, Niagara Park System, Cameron (1895). Ontario:
Niagara, Macoun, May 13, 1901 (CAN), Heimburger (1955). "... edges of
ponds and streams," Hamilton (1943).
Ontario:
"Whirlpool golf course pond," Reddon, May 3, 1983 (NFO). New York: Buckhorn Island, southern park boundary; a
few plants in old 'embayment' just E of gravel service road, Eckel, May 20,
1999 (BUF).