Page authors: Don Knoke, David Giblin
Cerastium glomeratum
sticky mouse-ear chickweed

Distribution: Widely distributed on both sides of the Cascades crest in Washington, but more common west of the crest; Alaska to California, east across most of North America to the Atlantic Coast.

Habitat: Prairies, balds, fields, roadsides, wastelots, and other disturbed areas at low to middle elevations.

Flowers: March-July

Origin: Introduced from Europe

Growth Duration: Annual

Conservation Status: Not of concern

Pollination: Bees, flies


Copiously glandular-pubescent annual, the 1-several erect to decumbent stems branched, 1-3 dm. long.


Basal and lower cauline leaves spatulate to obovate, opposite, 8-15 mm. long and up to 8 mm. broad, tapered to the petiole; middle and upper cauline leaves larger, ovate to obovate, sessile.


Flowers numerous, in tight clusters in an open inflorescence; pedicels shorter than the calyx; sepals 5, 4-5 mm. long, stiff-hairy; petals 5, white, equal to the sepals; stamens 10; styles 5.


Capsule cylindric, twice as long as the calyx.

Accepted Name:
Cerastium glomeratum Thuill.
Publication: Fl. Env. Paris, ed. 2. 226. 1799.

Synonyms & Misapplications:
Cerastium acutatum Suksd.
Cerastium fulvum Raf.
Cerastium viscosum L. [HC]
Additional Resources:

PNW Herbaria: Specimen records of Cerastium glomeratum in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Cerastium glomeratum checklist entry

OregonFlora: Cerastium glomeratum information

E-Flora BC: Cerastium glomeratum atlas page

CalPhotos: Cerastium glomeratum photos

38 photographs:
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