Genus = Bidens,
Displaying matches 1 - 5 of 5.
Glabrous annual, the stem 5-10 dm. tall.
Distribution: Vancouver Island, British Columbia, and Snohomish County, Washington.
Habitat: Wet places.
(= Bidens cernua in Flora of the Pacific Northwest)
Annual, nearly glabrous throughout, 1-10 dm. tall. The undivided leaves and large flowering heads with prominent ray flowers readily separates Bidens cernua from the other species of Bidens.
Distribution: Widely distributed throughout much of Washington; widely distributed throughout North America.
Habitat: Stream banks, pond and lake edges, and other wet places at low elevations.
(= Bidens frondosa in Flora of the Pacific Northwest)
Annual, nearly glabrous throughout, 2-12 dm. tall. The leaves of Bidens frondosa have long, slim petioles, while the similar B. tripartita has leaves with winged petioles.
Distribution: Widely distributed throughout much of Washington; widely distributed throughout North America except Alaska and northernmost Canada.
Habitat: Wet areas at low elevations.
(= Bidens tripartita in Flora of the Pacific Northwest)
Annual, nearly glabrous throughout, 1-20 dm. tall. The winged petioles of Bidens tripartita should separate it from the very similar B. frondosa.
Distribution: Introduced in most of the United States, but uncommon in our area.
Habitat: Wet waste places, primarily at low elevtions.
(= Bidens vulgata in Flora of the Pacific Northwest)
Annual, nearly glabrous throughout, 3-15 dm. tall.
Distribution: Distributed widely throughout Washington; British Columbia east to Nova Scotia, and southward throughout much of the U.S.
Habitat: Streamsides, ponds, lakes, ditches and other moist to wet waste places.
