Bidens cernua L.

Flora of Oregon, U.S.A.
Asteraceae
Bidens cernua L.
Benton Co., Oregon: Irish Bend County Park, on the
Willamette River, ca. 5.5 air miles N.E. of Monroe; at
the end of Irish Bend Road. Elev. 80 m.
N 44.360534° W 123.219924°
Habitat: Sand and gravel along river.
Flowers yellow.
Associated taxa: Bidens frondosa, Medicago, Mentha,
Salix, Ludwigia, Persicaria.
Richard R. Halse 10585	7 Sept. 2020
B	Oregon State University
04371960