Page author: Don Knoke
Anthemis cotula
mayweed chamomile, stinking chamomile, dogfennel
WTU specimens
Other herbaria

Distribution: Introduced throughout the United States

Habitat: Weed of roadsides and disturbed area

Flowers: May - October

Origin: Introduced

Conservation Status: Not of concern


Ill-smelling, glabrous, branched annual, 1-6 dm. tall.


Leaves 2-6 cm. long, 2 or 3 times pinnatifid, with very narrow segments.


Heads fairly numerous, short-pedunculate at the ends of the branches, the disk 5-10 mm. wide, becoming ovoid at maturity; involucre with a few soft hairs, the bracts imbricate, dry, their margins papery; rays 10-20, white, sterile and neutral, 5-11 mm. long; disk flowers perfect, yellow; receptacle chaffy only towards the middle, its firm, narrow, awn-shaped bracts tapering to the apex; pappus none.


Achenes sub-terete, 10-ribbed, with small glandular bumps.

Accepted Name:
Anthemis cotula L.
Publication: Sp. Pl. 2: 894. 1753. 1753.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Anthemis cotula in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Anthemis cotula checklist entry.

E-Flora BC: Anthemis cotula atlas page.

CalPhotos: Anthemis cotula photos.

USDA Plants: Anthemis cotula information.

25 photographs:
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