Hydrophyllum canadense Linnaeus. Phen: May-Aug; Aug-Sep. Hab: Cove forests, rocky streambanks, other moist and nutrient-rich forests. Dist: VT and s. ON west to MI and WI, south to n. GA, AL, ne. AR (?), and MO.
Origin/Endemic status: Native
Synonymy: = C, F, G, Il, K1, K3, K4, Mi, Mo2, NE, NY, Pa, RAB, S, Tn, Va, W, WV, Beckmann (1979), Constance (1942)