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Montana Field Guide

Montana Field Guides

Devil's Beggarticks - Bidens frondosa

Native Species

Global Rank: G5
State Rank: S4S5
(see State Rank Reason below)

Agency Status
MNPS Threat Rank:
C-value: 6

External Links

State Rank Reason (see State Rank above)
Numerous collections from Sanders, Big Horn,cTreasure, Dawson, Yellowstone counties and the CM Russell NWR. Probably undercollected due to inconspicuous appearance.
General Description
Annual. Stems erect, 20–80 cm, often branched. Herbage glabrous to sparsely puberulent. Leaves distinctly petiolate; blades 1–8 cm long, divided into 3 lanceolate, serrate leaflets. Inflorescence: heads several; peduncles 1–8 cm long. Involucre: outer phyllaries ca. 8, linear-oblanceolate, 1–2 cm long, ciliate; inner phyllaries ovate, 4–8 mm long with erose, appendaged tips. Rays absent or 3 to 5, reduced. Disk corollas 2–3 mm long. Pappus 2, awns 2–4 mm long. Achenes flattened, 6–12 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Diagnostic Characteristics
Easily confused with Bidens vulgata, numerous MONTU collections of B. vulgata were mislabelled as B. frondosa and visa-versa.

Range Comments
Throughout North America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 3

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)


The following animal species have been reported as pollinators of this species or genera where their geographic ranges overlap: Bombus griseocollis and Bombus impatiens (Plath 1934, Colla and Dumesh 2010).

  • Literature Cited AboveLegend:   View Online Publication
    • Colla, S.R. and S. Dumesh. 2010. The bumble bees of southern Ontario: notes on natural history and distribution. Journal of the Entomological Society of Ontario 141: 39-68.
    • Plath, O.E. 1934. Bumblebees and their ways. New York, NY: Macmillan Company. 201 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Fassett, N. C. 1985. (3rd ed.) A Manual of Aquatic Plants, with Revision Appendix by E. C. Ogden. University of Wisconsin Press, Madison. 405 pp.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Web Search Engines for Articles on "Devil's Beggarticks"
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Citation for data on this website:
Devil's Beggarticks — Bidens frondosa.  Montana Field Guide.  .  Retrieved on , from