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Montana Field Guide

Montana Field Guides

Common Mother-wort - Leonurus cardiaca

Non-native Species

Global Rank: GNR
State Rank: SNA
C-value: 0

Agency Status


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General Description
Short-rhizomatous perennial. Stems simple, erect, 40–100 cm, puberulent on the angles. Leaves petiolate, blades palmately lobed halfway to the midvein and serrate, 3–10 cm long, puberulent, gradually reduced upwards. Inflorescence of many-flowered verticillasters in axils of upper leaves. Flowers: calyx glandular, 5-veined, 5–7 mm long, the aristate lobes as long as the tube, the lower 2 reflexed down and somewhat longer; corolla pink, 8–12 mm long, bilabiate, the upper lip hood-like, villous, the lower lobes short; stamens 4. Nutlets 3-sided, pubescent on top (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Introduced for medicinal purposes from Asia to much of temperate North America (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 12

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Relative Density



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


The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus vagans and Bombus bimaculatus (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.
    • 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 "Common Mother-wort"
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Citation for data on this website:
Common Mother-wort — Leonurus cardiaca.  Montana Field Guide.  .  Retrieved on , from