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Common Horehound - Marrubium vulgare
Other Names:  White Horehound

Non-native Species

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


Agency Status
USFWS:
USFS:
BLM:


 

External Links






 
General Description
Taprooted perennial. Stems ascending to erect, simple, 30–100 cm. Herbage white-wooly. Leaves cauline, short-petiolate; blades ovate, crenate, 1–3 cm long. Inflorescence of dense, head-like verticillasters in leaf axils. Flowers: calyx 4–6 mm long, wooly with long hairs within the throat, the 10 hooked-spinulose teeth shorter than the campanulate tube; corolla white, 5–7 mm long, bilabiate, the 2 lips ca. equal in length; stamens 4. Nutlets minutely reticulate (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range

Non-native
 


Range Comments
Sporadically introduced throughout North America; native to Europe (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 21

(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

Management

References
  • 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.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Chadde, S.W. 1985. Initial recovery patterns of southwestern Montana foothill range. M.Sc. Thesis. Bozeman, MT: Montana State University. 103 p.
    • Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
    • Quire, R.L. 2013. The sagebrush steppe of Montana and southeastern Idaho shows evidence of high native plant diversity, stability, and resistance to the detrimental effects of nonnative plant species. M.Sc. Thesis. Bozeman, MT: Montana State University. 124 p.
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Citation for data on this website:
Common Horehound — Marrubium vulgare.  Montana Field Guide.  .  Retrieved on , from