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Montana Field Guide

Montana Field Guides

Noble Yarrow - Achillea nobilis

Exotic Species (not native to Montana)

Global Rank: GNR
State Rank: SNA

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 1

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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).

Habitat

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