Desmodium canadense (Linnaeus) A.P. de Candolle. Showy Tick-trefoil, Canadian Tick-trefoil. Phen: Jul-Sep; Aug-Oct. Hab: Marl marshes, Thuja swamps, springs, seeps, hay meadows, streambanks, prairies, usually associated with calcareous substrates. Dist: QC and NS west to AB, south to n. VA, sw. VA, w. NC (?), c. WV, MO, and OK.
Origin/Endemic status: Native
Syn: = C, F, G, GrPl, Il, K1, K3, K4, Mi, Mo3, NE, NY, Pa, SE3, Tx, Va, W, WV, Isely (1998); = Meibomia canadensis – S