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Montana Field Guides

Feverfew - Tanacetum parthenium
Other Names:  Feather-leaved Tansy, Chrysanthemum parthenium

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Non-native Species

Global Rank: GNR
State Rank: SNA

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

External Links

 
General Description
Rhizomatous or taprooted. Stems erect, 25–80 cm. Herbage puberulent. Leaf blades 1–10 cm long, pinnately divided; segments oblanceolate, deeply serrate. Involucre 5–7 mm across; phyllaries in 2 or 3 series. Ray flowers female, white; ligules 2–8 mm long. Disk corollas ca. 2 mm long. Achenes 1–2 mm long, 5- to 10-angled (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Introduced in eastern U.S. and BC to MT south to NV, UT and CO (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 8

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Relative Density

Recency

 

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



Habitat

References
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Citation for data on this website:
Feverfew — Tanacetum parthenium.  Montana Field Guide.  .  Retrieved on , from