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Montana Field Guide

Montana Field Guides

Sneezeweed - Achillea ptarmica
Other Names:  Sneezewort Yarrow, Wild Pellitory, False Sneezewort

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Non-native Species

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


Agency Status
USFWS:
USFS:
BLM:


 

External Links

 
General Description
Stems erect, branched above, angled, 30–60 cm. Herbage glabrous below, pubescent above. Leaves cauline, sessile; blades linear-lanceolate, 3–10 cm long, serrulate. Inflorescence leafy-bracteate, of few heads. Involucre 4–6 × 4–8 mm; bracts in 3 series; outer bracts villous, green with brown margins. Rays white, 8 to 10; ligules 4–5 mm long and wide. Disk flowers white,10–30; corolla ca. 3 mm long. Achenes 1–2 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Introduced across northern U.S. and adjacent Canada; native to Eurasia. Collected in Flathead County (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 4

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Relative Density

Recency

 

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



Habitat

Ecology
POLLINATORS
The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus bifarius, Bombus frigidus, Bombus melanopygus, Bombus mixtus, Bombus ternarius, and Bombus insularis (Thorp et al. 1983, Wilson et al. 2010, Koch et al. 2012).

Management

References
  • Literature Cited AboveLegend:   View Online Publication
    • Koch, J., J. Strange, and P. Williams. 2012. Bumble bees of the western United States. Washington, DC: USDA Forest Service, Pollinator Partnership. 143 p.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Thorp, R.W., D.S. Horning, and L.L. Dunning. 1983. Bumble bees and cuckoo bumble bees of California (Hymenoptera: Apidae). Bulletin of the California Insect Survey 23:1-79.
    • Wilson, J.S., L.E. Wilson, L.D. Loftis, and T. Griswold. 2010. The montane bee fauna of north central Washington, USA, with floral associations. Western North American Naturalist 70(2): 198-207.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
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Citation for data on this website:
Sneezeweed — Achillea ptarmica.  Montana Field Guide.  .  Retrieved on , from