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Montana Field Guide

Montana Field Guides

Noble Yarrow - Achillea nobilis

Non-native Species

Global Rank: GNR
State Rank: SNA

Agency Status
MNPS Threat Rank:
C-value: 1

External Links

General Description
Stems ascending to erect, simple, 20–60 cm. Herbage villous below, tomentose above. Leaves mainly cauline, sessile; blades ovate, 1–6 cm long, twice pinnately dissected; ultimate lobes ca. 1 mm long and wide. Inflorescence hemispheric 2–10 cm across with numerous heads. Involucre sparsely glandular, 2–3 mm high, ca. 2 mm wide; bracts in 2 series; outer bracts light green, scarious, villous. Rays white, 8 to 10; ligules 1–2 mm long, wider than long. Disk flowers white,10 to 30; corolla 1–2 mm long. Achenes ca. 1 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Introduced to MT more than 100 years ago; native to Europe. Collected in Flathead and Lake counties (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 84

(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)


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Citation for data on this website:
Noble Yarrow — Achillea nobilis.  Montana Field Guide.  .  Retrieved on , from