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Montana Field Guide

Montana Field Guides

Common Tansy - Tanacetum vulgare

Noxious Weed: Priority 2B
Exotic Species (not native to Montana)

Global Rank: GNR
State Rank: SNA

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 0

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General Description
Stems erect, 40–120 cm, unbranched below the inflorescence. Herbage glabrate. Leaf blades 5–15 cm long, pinnately divided into lanceolate, serrate to sharply lobed leaflets. Involucre 5–10 mm across; phyllaries in 2 to 3 subequal series. Rays absent. Disk corollas 1–3 mm long. Achenes 1–2 mm long, cylindric, 4- to 5-angled (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Unknown/Undetermined
 


Range Comments
Introduced throughout U.S. and Canada (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 118

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Relative Density

Recency

 

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



Habitat
Moist, disturbed meadows, often along streams; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Common Tansy — Tanacetum vulgare.  Montana Field Guide.  .  Retrieved on , from