Ambrosia artemisiifolia L. COMMON RAGWEED. Goat Island, Sept. 19, 1877
(J. D. Hooker's American Journal). "Goat Island and with A. trifida,"
Day (1888). Ontario, Queen Victoria Park, Panton (1890). Ontario, Niagara Park
System, Cameron (1895). Ontario: Niagara Falls, Wm. Scott, Sept. 14, 1895,
Heimburger (1955). "... an obnoxious weed ... against which the Commission
has been waging an active campaign for the past several years," Hamilton
(1943).
New York,
Lewiston, Morreale, Sept. 3, 1976 (BUF); near Niagara University, Pierce,
Sept. 5, 1976 (BUF); Goat Island, ;
abundant on shrubby river margins and wood margins. Eckel Sept. 9, 1984 (BUF); top of
Devil's Hole, , south,
near weedy crest of Niagara River gorge, with Solidago juncea. Eckel, Aug. 19, 1987 (BUF New York:
Buckhorn Island, SW part of park, W of I90, near path along Niagara River from
West River Parkway to Burntship Creek, grassy road, Eckel, Oct. 1, 1997 (BUF).
Ontario: Navy Island, beach, Eckel, Sept. 21, 1998 (BUF).
Ambrosia trifida L. GIANT RAGWEED. "Margin of the River above the
Falls," Day (1888). Ontario, Niagara Park System, Cameron (1895).
"... on waste or cultivated land ... moist soil along ditches and
streams," Hamilton (1943). New York: Cayuga Island, Eckel (1991).
New York: weedy area below
tracks of Lower Arch Railroad Bridge, Eckel & Zander, Sept. 11, 1987;
Cayuga Island, Eckel & Eckel, Sept. 8, 1988 (BUF). New York: Buckhorn Island, coarse weed, e/w path,
northern boundary, to 6 feet, Eckel, Oct. 21, 1997 (BUF).