Page author: Don Knoke
Achillea ptarmica
pearl yarrow
WTU specimens
Other herbaria

Distribution: Introduced in Washington to Montana, and northeastern United States

Habitat: Occasionally escaped from cultivation

Origin: Introduced

Conservation Status: Not of concern

Description:
General:

Non-aromatic perennial, 3-10 dm. tall, short-hairy throughout.

Leaves:

Leaves linear, finely serrate, green, sessile and clasping.

Flowers:

Inflorescence open, of several small umbels terminating the branches; involucral bracts imbricate in several series, dry, the margins translucent; rays short, white; disc flowers creamy-white; receptacle convex, chaffy throughout; pappus none.

Fruits:

Achenes compressed parallel to the involucral bracts.

Accepted Name:
Achillea ptarmica L.
Publication: Sp. Pl. 2: 898. 1753. 1753.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Achillea ptarmica in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Achillea ptarmica checklist entry.

E-Flora BC: Achillea ptarmica atlas page.

CalPhotos: Achillea ptarmica photos.

USDA Plants: Achillea ptarmica information.

4 photographs:
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