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Montana Field Guide

Montana Field Guides

Mayweed - Anthemis cotula
Other Names:  Stinking Chamomile, Stinking Chamomile, Camomille Maroute, Dog Fennel, Stinking Chamomile

Non-native Species

Global Rank: G5
State Rank: SNA

Agency Status
MNPS Threat Rank:
C-value: 1

External Links

General Description
Taprooted annual. Stems erect, simple or branched, 10–60 cm. Herbage glabrate to sparsely villous, aromatic. Leaves oblong, 15–50 mm long; ultimate segments linear. Peduncles 2–7 cm long. Involucre 7–11 mm wide, sparsely villous. Rays 10 to 15, white, sterile; ligules 5–10 mm long. Disk corolla 2–3 mm long, glandular. Achenes 1–2 mm long, sparsely glandular; angles glabrous (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range


Range Comments
Introduced throughout North America; native to Europe (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 23

(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)

Predicted Suitable Habitat Model

This species has a Predicted Suitable Habitat Model available.

To learn how these Models were created see


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Citation for data on this website:
Mayweed — Anthemis cotula.  Montana Field Guide.  .  Retrieved on , from