Page authors: Don Knoke, David Giblin
Bidens frondosa
leafy beggarticks, devil's pitchfork, sticktight
WTU specimens
Other herbaria

Distribution: Widely distributed throughout much of Washington; widely distributed throughout North America except Alaska and northernmost Canada.

Habitat: Wet areas at low elevations.

Flowers: June-October

Origin: Native

Conservation Status: Not of concern

Description:
General:

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.

Identification Notes:

The leaves of Bidens frondosa have long, slim petioles, while the similar B. tripartita has leaves with winged petioles.

Accepted Name:
Bidens frondosa L.
Publication: Sp. Pl. 2: 832. 1753. 1753.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Bidens frondosa in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Bidens frondosa checklist entry.

E-Flora BC: Bidens frondosa atlas page.

CalPhotos: Bidens frondosa photos.

USDA Plants: Bidens frondosa information.

16 photographs:
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