Sidalcea
checker-mallow, sidalcea
6 species
2 subspecies and varieties
2 subspecies and varieties
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Sidalcea campestris – meadow checker-mallow, meadow sidalcea
Distribution: Occurring west of the Cascades crest in Washington, where escaped from cultivation; endemic to the Willamette Valley of Oregon.
Habitat: Dry fields and roadsides.
Origin: Introduced from Oregon
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington, where escaped from cultivation; endemic to the Willamette Valley of Oregon.
Habitat: Dry fields and roadsides.
Origin: Introduced from Oregon
Flowers: May-July
Growth Duration: Perennial
Sidalcea hendersonii – Henderson's checker-mallow
Distribution: Occurring west of the Cascades crest in the coastal counties in Washington; southwestern British Columbia to the Umpqua River area in Oregon.
Habitat: On or adjacent to tidelands, coastal marshes.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in the coastal counties in Washington; southwestern British Columbia to the Umpqua River area in Oregon.
Habitat: On or adjacent to tidelands, coastal marshes.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
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.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
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.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Sidalcea nelsoniana – Nelson's checker-mallow
Distribution: Occurring west of the Cascades crest in southwestern Washington; southwestern Washington to west-central Oregon.
Habitat: Gravelly, well-drained soil at low elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in southwestern Washington; southwestern Washington to west-central Oregon.
Habitat: Gravelly, well-drained soil at low elevations.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Sidalcea oregana – Oregon checker-mallow
Distribution: Chiefly east of the Cascades in Washington; Washington south to California, east to Wyoming.
Habitat: Sagebrush plains, meadows and ponderosa pine forests.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Chiefly east of the Cascades in Washington; Washington south to California, east to Wyoming.
Habitat: Sagebrush plains, meadows and ponderosa pine forests.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
• var. calva – Oregon checkermallow
• var. oregana – Oregon checkermallow
Sidalcea virgata – virgate checker-mallow, virgate checkerbloom
Distribution: Historically occurring west of the Cascades crest in Washington, where disjunct in Thurston County and now considered extirpated; Yamhill County, Oregon to California.
Habitat: Moist prairies and meadows at low elevations.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
Distribution: Historically occurring west of the Cascades crest in Washington, where disjunct in Thurston County and now considered extirpated; Yamhill County, Oregon to California.
Habitat: Moist prairies and meadows at low elevations.
Origin: Native
Flowers: April-June
Growth Duration: Perennial
