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Montana Field Guide

Montana Field Guides

Nodding Beggarticks - Bidens cernua

Native Species

Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 4

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General Description
Annual. Stems erect, often branched, 10–80 cm, often puberulent. Herbage glabrate. Leaves short-petiolate to sessile, lanceolate, serrate 2–15 cm long. Inflorescence: heads few, nodding at maturity; peduncles 1–4 cm long. Involucre: outer phyllaries 5 to 8, spreading to reflexed, linear-oblanceolate, 15–40 mm long, minutely ciliate; inner phyllaries narrowly ovate, 7–12 mm long. Rays 6 to 8 (absent); ligules 2–15 mm long. Disk corollas 3–4 mm long. Pappus of usually 4 awns 2–4 mm long. Achenes 4-angled, compressed, 5–6 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Circumboreal, 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: 22

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

Recency

 

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



Habitat
Vernally inundated, often disturbed shores of streams, ponds, lakes, marshes; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Ecology
POLLINATORS
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).

References
  • 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?
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Tuinstra, K. E. 1967. Vegetation of the floodplains and first terraces of Rock Creek near Red Lodge, Montana. Ph.D dissertation. Montana State University, Bozeman 110 pp.
  • Web Search Engines for Articles on "Nodding Beggarticks"
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Citation for data on this website:
Nodding Beggarticks — Bidens cernua.  Montana Field Guide.  .  Retrieved on , from