Page author: Don Knoke
Matricaria chamomilla
wild chamomile, scented mayweed
WTU specimens
Other herbaria

Distribution: Widespread across the United States and southern Canada.

Habitat: Roadsides, dry waste sites.

Flowers: Late April - June

Origin: Introduced

Conservation Status: Not of concern

Description:
General:

Aromatic annuals, the 1-8 stems erect to ascending, 8-60 cm. tall, often branched upward.

Leaves:

Leaves alternate, bipinnatifid, 2-8 cm. long, the ultimate segments elongate, linear to filiform.

Flowers:

Heads 8-120, borne singly, with ray flowers; peduncles 20-50 mm. long; involucral bracts 34-42, in 3 series, the margins mostly entire; ray flowers 14-26, white, the tubes narrowly winged, 7-8.5 mm. long and 2.5-3.3 mm. wide; disk flowers 250-570, the corollas yellow to greenish-yellow, 5-lobed; pappus usually none.

Fruits:

Achenes tan, obconic, 0.75-0.9 mm. long, with 5 white ribs.

Accepted Name:
Matricaria chamomilla L.
Publication: Sp. Pl. 2: 891. 1753. 1753.

Synonyms & Misapplications:
Matricaria recutita L.
Additional Resources:

PNW Herbaria: Specimen records of Matricaria chamomilla in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Matricaria chamomilla checklist entry.

E-Flora BC: Matricaria chamomilla atlas page.

CalPhotos: Matricaria chamomilla photos.

USDA Plants: Matricaria chamomilla information.

4 photographs:
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