This rhizomatous species is widespread in damp meadows and shores of northern regions, but has disappeared from Ky. There are only old records from FAYE (C.W. Short, PH, "on Elkhorn near Lex[ington]" and BOON (Nelson 1919), plus a doubtful recent record from HARD (cited in M). A. canadensis does survive in s. Ohio, s. Ind., and s. Ill., within 50 miles of Ky. at several sites, especially in the Wabash Rv. valley of sw. Ind. and se. Ill. (D, K, PL). The species is often used in wildflower gardens, but it is not known to have persisted in more naturalized areas.