E-Flora BC: Electronic Atlas of the Flora of British Columbia

Bidens tripartita L.
three-parted beggarticks (threelobe beggarticks)
Asteraceae (Aster family)

Introduction to Vascular Plants

Distribution of Bidens tripartita
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Species Information

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Illustration Source: The Illustrated Flora of British Columbia

General:
Annual herb from a fibrous root; stems erect, simple or branched, 20-100 cm tall.

Leaves:
Basal leaves lacking; stem leaves simple, or lowermost mostly lobed at the base, deeply incised or 3-lobed, saw-toothed, up to 20 cm long; stalks short, wing-margined.

Flowers:
Heads usually discoid; involucres 1-3 cm tall; involucral bracts linear, spreading, outer ones 1-3 cm long, inner ones 7-8 mm long; ray flowers usually lacking; disk flowers about 3 mm long.

Fruits:
Achenes wedge-shaped, outer ones 3.5-4 mm long, 2-3 angled, inner ones 5-8 mm long, 4-angled; barbs of the angles ascending below, reflexed above; pappus awns usually 4, 1-3.6 mm long.

Notes:
Bidens connata Muhl. ex Willd., native to E North America, has been collected in a cranberry bog in Richmond. It is closely related to B. tripartita.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Key to the Species and Taxonomic Notes

Habitat / Range

Climate

Status Information

Synonyms and Alternate Names

Taxonomic and Nomenclatural Links

Additional Range and Status Information Links

Additional Photo Sources

General References

Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2020. E-Flora BC: Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2025-04-01 5:42:43 PM ]

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