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Montana Field Guide

Montana Field Guides

Greater Burdock - Arctium lappa

Exotic Species (not native to Montana)

Global Rank: GNR
State Rank: SNA

Agency Status
MNPS Threat Rank:
C-value: 0

External Links

General Description
Stems erect, branched, 50–150 cm. Leaves with solid petioles; blades10–50 cm long, tomentose beneath. Inflorescence corymbiform, heads short-pedunculate. Involucre 3–4 cm wide, glabrate. Disk flowers ca. 40, purple; corolla 9–14 mm long. Pappus 2–5 mm long. Achenes 6–7 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Range Comments
Widespread; Eurasian.

Summary of Observations Submitted for Montana
Number of Observations: 1

(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)

Disturbed areas.

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Citation for data on this website:
Greater Burdock — Arctium lappa.  Montana Field Guide.  .  Retrieved on , from