– Pacific ninebark
Distribution: Occurring on both sides of the Cascades crest in Washington, but found chiefly on the west side; Alaska south to California, east to Alberta and Idaho.
Habitat: Moist woods and swamps in the lower mountains.
– mallow ninebark, mallow-leaf ninebark
Distribution: Occurring east of the Cascades crest in eastern Washington; British Columbia to Oregon, east to Alberta and Utah.
Habitat: Canyons and hillsides, grasslands, ponderosa pine and Douglas-fir forest openings and edge.