UW Burke Herbarium species comparison

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Bidens laevis

Bidens frondosa

leafy beggar-ticks, devil's pitchfork, sticktight
Habit Annual, nearly glabrous throughout, 2-12 dm. tall.
Leaves

Leaves with petioles 1-6 cm. long, pinnately compound, with 3-5 lanceolate, pointed, serrate leaflets up to 10 cm. long and 3 cm. wide.
Flowers

Heads without rays, the disk about 1 cm. wide; outer involucral bracts 5-8, green and leafy, surpassing the orange disk.
Fruits

Achenes flat, narrowly wedge-shaped, dark brown, 5-10 mm. long, with persistant pappus of 2 barbed awns.

Bidens laevis

Bidens frondosa
Identification notes The leaves of Bidens frondosa have long, slim petioles, while the similar B. tripartita has leaves with winged petioles.
Flowering time June-October
Habitat Shores of ponds, lakes, backwater channels, and other wetland areas at low elevations, often where disturbed.
Distribution
[WildflowerSearch map]
[BONAP county map]
Occurring on both sides of the Cascades crest in Washington; southern British Columbia to California, east across North America to the Atlantic Coast.
[WildflowerSearch map]
[BONAP county map]
Origin Native
Conservation status Not of concern
Sibling taxa
B. amplissima, B. beckii, B. cernua, B. connata, B. frondosa, B. tripartita, B. vulgata
B. amplissima, B. beckii, B. cernua, B. connata, B. tripartita, B. vulgata
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in UW Burke Herbarium yet, or it's listed under a synonym.)

Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

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