Page authors: Don Knoke, David Giblin
Filago arvensis
field cottonrose, cudweed, field filago, field cotton rose
WTU specimens
Other herbaria

Distribution: Occurring east of the Cascades crest in Washington; Alaska to Oregon, east to Sasketchewan, Nebraska, Minnesota and Michigan.

Habitat: Dry, open waste land and overgrazed ranges.

Flowers: July-September

Origin: Introduced

Conservation Status: Not of concern


White-woolly annual, the simple or branching stem 0.3-5 dm. tall.


Leaves alternate, entire, erect, linear, up to 4 cm. long and 5 mm. wide.


Inflorescence elongate, the heads 3-5 mm. high, in tight clusters; involucre bracts few, but woolly, concave bracts on the receptacle resemble an involucre; flowers whitish, the outer several series pistillate, fertile, without pappus and subtended by the bracts; the inner flowers sterile, few, without bracts but with capillary pappus.


Achenes small, nerveless.

Accepted Name:
Filago arvensis L.
Publication: Sp. Pl. 2: add. 1753

Synonyms & Misapplications:
Logfia arvensis (L.) Holub [FNA19]
Oglifa arvensis (L.) Cass.
Additional Resources:

PNW Herbaria: Specimen records of Filago arvensis in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Filago arvensis checklist entry.

E-Flora BC: Filago arvensis atlas page.

CalPhotos: Filago arvensis photos.

USDA Plants: Filago arvensis information.

22 photographs:
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