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Montana Field Guide

Montana Field Guides

Common Deadnettle - Lamium amplexicaule
Other Names:  Henbit Deadnettle, Common Henbit, Greater Henbit

Non-native Species

Global Rank: GNR
State Rank: SNA
C-value: 1

Agency Status


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General Description
Stems ascending, branched at the base. Herbage strigose. Leaves sessile above; blades orbicular, crenate, 5–25 mm long. Inflorescence of few verticillasters subtended by leaf-like bracts. Flowers: calyx 5–8 mm long; corolla purplish, 12–18 mm long; upper lip 2–5 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range


Range Comments
Introduced to most of North America; native to Eurasia (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 27

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Relative Density



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



  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Common Deadnettle — Lamium amplexicaule.  Montana Field Guide.  .  Retrieved on , from