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Montana Field Guide

Montana Field Guides

Nodding Beggarticks - Bidens cernua


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 N. America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 6

(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).

References
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Citation for data on this website:
Nodding Beggarticks — Bidens cernua.  Montana Field Guide.  .  Retrieved on , from