Packera
butterweed, groundsel
12 species
3 subspecies and varieties
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Packera bolanderiBolander's groundsel
Distribution: Occurring west of the Cascades crest in southwestern Washington and in the Columbia River Gorge; southern Washington to California.
Habitat: Moist, rocky woodlands, banks, bluffs, and beaches, from the lowlands to middle elevations in the mountains.
Origin: Native
Flowers: June-July
Growth Duration: perennial
var. harfordii – Harford's groundsel, Harford's ragwort
Packera canawoolly groundsel
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the northern Great Plains.
Habitat: Dry, open, often rocky places, from the foothills to alpine meadows.
Origin: Native
Flowers: May-August
Growth Duration: perennial
Packera conterminadwarf arctic butterweed
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to Washington, east to Alberta and Montana.
Habitat: Exposed, rocky places in the alpine to occasionally the subalpine;
Origin: Native
Flowers: July-September
Packera flettiiFlett's groundsel
Distribution: Occurring in the Olympics and Cascades mountains in Washington; Washington to Oregon.
Habitat: Open, rocky places in the alpine, occasionally at middle elevatins, especially on talus slopes.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Packera indecorarayless mountain butterweed, elegant groundsel
Distribution: Occurring on both sides of the Cascades crest in northern Washington; Alaska to Washington, and also in California, east to Idaho, Montana, Wyoming, and in the Great Lakes Region, also east across Canada to the Atlantic Coast.
Habitat: Damp meadows to stream banks and moist woodlands, from the valleys to the subalpine.
Origin: Native
Flowers: July-August
Growth Duration: perennial
Packera macouniiPuget butterweed, long-rayed groundsel, Macoun's groundsel, Siskiyou Mountain ragwort
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Open woods and dry, open places at low elevations.
Origin: Native
Flowers: May-July
Growth Duration: perennial
Packera pauciflorarayless alpine butterweed, rayless alpine groundsel
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to northern Washington, disjunct in California and northwest Wyoming, east to Northwest Territory and Alberta, also in eastern Canada.
Habitat: Alpine and subalpine meadows and moist cliffs.
Origin: Native
Flowers: June-August
Growth Duration: perennial
Packera pauperculaCanadian butterweed, balsam groundsel
Distribution: Occurring east of the Cascades crest in Washington British Columbia to Washington, east to the Rocky Mountains, northern Great Plains, and eastern North America.
Habitat: Meadows, moist cilffs and woods, from the foothills to middle elevations in the mountains.
Origin: Native
Flowers: May-October
Growth Duration: perennial
Packera porteriPorter's groundsel
Distribution: Reported east of the Cascades crest in Okanogan County in Washington; Washington and Oregon, also occurring in Colorado.
Habitat: Talus slopes in the alpine.
Origin: Native
Flowers: July-August
Packera pseudaureastreambank butterweed
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, the Rocky Mountains, northern Great Plains, and central U.S.
Habitat: Wet meadows, stream banks and moist woodlands from middle elevations to the sublpine.
Origin: Native
Flowers: June-August
Growth Duration: perennial
var. pseudaurea – stream bank butterweed, falsegold groundsel
Packera streptanthifoliaRocky Mountain butterweed, cleftleaf groundsel, Rocky Mountain groundsel
Distribution: Occurring on both sides of the Cascades crest in Washington; Yukon Territory to California, east to the Rocky Mountains and Sasketchewan.
Habitat: Moist to moderately dry open areas and forest, from middle elevations to the subalpine.
Origin: Native
Flowers: May-August
Growth Duration: perennial
Packera subnudaalpine meadow butterweed, few-leaved groundsel
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, and Wyoming.
Habitat: Wet meadows in the subalpine and alpine.
Origin: Native
Flowers: July-September.
Growth Duration: perennial
var. subnuda – cleftleaf groundsel