Page authors: Don Knoke, David Giblin
Sidalcea hirtipes
bristly-stem checker-mallow

Distribution: Occurring west of the Cascades crest in Clark and Lewis counties in Washington; southwestern Washington to Lincoln, Tillamook and Clatsop Counties, Oregon.

Habitat: Coastal mountains to bluffs along the ocean, but not on tideflats.

Flowers: June-July

Origin: Native

Growth Duration: Perennial

Conservation Status: Threatened in Washington (WANHP)

Pollination: Bumblebees, bees, beetles


Herbaceous, large-clumped perennial from short, thick rhizomes, the stems 7-13 dm. tall, copiously hairy with stiff, simple or paired hairs up to 2.5 mm. long.


Leaves alternate, palmately lobed, the lower rotund, the lobes coarsely toothed, the teeth rounded; upper leaves 5-lobed nearly to the base, the lobes narrow, with 2 -3 coarse teeth.


Inflorescence of spike-like racemes, closely many-flowered; pedicels 1-3 mm. long; calyx 5-parted, 9-15 mm. long, enlarged in fruit, with simple to stellate hairs 1-2 mm. long; petals 5, nearly white to pink, clawed, broadly obovate and 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.


Capsules 3.5-4 mm. long, honeycombed on the sides, with a beak 0.6-0.8 mm. long.

Accepted Name:
Sidalcea hirtipes C.L. Hitchc.
Publication: Perenn. Sp. Sidalcea 42-44, map 2. 1957.

Synonyms & Misapplications:
(none provided)
Additional Resources:

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

WA Flora Checklist: Sidalcea hirtipes checklist entry.

OregonFlora: Sidalcea hirtipes information.

E-Flora BC: Sidalcea hirtipes atlas page.

CalPhotos: Sidalcea hirtipes photos.

USDA Plants: Sidalcea hirtipes information.

25 photographs:
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