2 species
1 subspecies and varieties
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Ivesia gordoniigordon's ivesia, alpine mousetail
Distribution: Mt. Adams, Wenatchee and Blue Mountains in Washington; Blue and Wallowa Mountains in Oregon; Montana to Colorado in the Rockies, west to California
Habitat: Floodplains and riverbanks to alpine ridges and talus
Origin: Native
Flowers: Late June - August
Ivesia tweedyiTweedy's mousetail
Distribution: East of the Cascades crest in Washington; Washington east to Idaho and Montana.
Habitat: Dry, open to wooded areas, mid- to high elevations in the mountains.
Origin: Native
Flowers: June-August