Sidalcea campestris
meadow checker-mallow, meadow sidalcea

Distribution: Native only to the Willamette Valley area (Multnomah and Washington to Benton and Linn counties). Introduced as a garden plant in western Washington, but rarely persisting.

Habitat: Dry fields and roadsides.

Flowers: May-July

Origin: Introduced

Growth Duration: Perennial

Conservation Status: Review Group 1 in Washington (WANHP)


Herbaceous perennial from a thick taproot and short rhizome, the stems 0.5-2 m. tall, usually with short, stiff hairs


Leaves alternate, palmately deeply 7- to 9-lobed, 5-15 cm. broad, the lobes again lobed and toothed.


Inflorescence an open, elongate raceme, the pedicels 3-6 mm. long; calyx 5-lobed, stellate or stellate and bristly; petals 5, nearly white to pinkish-orchid, 12-25 mm. long, clawed, with marginal hairs on the claws, shallowly notched; stamens 40-70, freed from the staminal tube in 2-3 series, the stamens united in groups; ovary superior, the carpels 5-10 in a ring around a central axis; styles equal to the number of carpels, elongate, stigmatic full length.


Capsule 3.5 mm. long.

Accepted Name:
Sidalcea campestris Greene
Publication: Bulletin of the California Academy of Sciences 1(3): 76-77. 1885.

Synonyms & Misapplications:
Sidalcea asplenifolia Greene
Sidalcea sylvestris A. Nelson
Additional Resources:

PNW Herbaria: Specimen records of Sidalcea campestris in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Sidalcea campestris checklist entry.

E-Flora BC: Sidalcea campestris atlas page.

CalPhotos: Sidalcea campestris photos.

USDA Plants: Sidalcea campestris information.

9 photographs:
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