Page authors: Don Knoke, David Giblin
Packera streptanthifolia
Rocky 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.

Flowers: May-August

Origin: Native

Conservation Status: Not of concern


Glabrous, fibrous-rooted perennial from a short, woody base or rhizome, 1-5 dm. high.


Somewhat succulent, the basal ones with long petioles and mostly elliptic or sub-rotund blade, with course, rounded teeth or entire; cauline leaves few and reduced, becoming sessile on the upper stem but not clasping, about twice as long as wide, usually somewhat coarsely lobed toward their bases.


Heads several, involucres 5-7 mm. high; rays 6-12 mm. long, yellow.

Accepted Name:
Packera streptanthifolia (Greene) W.A. Weber & Á. Löve
Publication: Phytologia. 49: 48. 1981.

Synonyms & Misapplications:
Packera cymbalarioides W.A. Weber & A. Löve, invalidly published
Senecio cymbalarioides Nutt. var. suksdorfii (Greenm.) M. Peck
Senecio leonardii Rydb.
Senecio streptanthifolius Greene [HC]
Senecio streptanthifolius Greene var. laetiflorus (Greene) J.F. Bain
Senecio streptanthifolius Greene var. wallowensis J.F. Bain
Additional Resources:

PNW Herbaria: Specimen records of Packera streptanthifolia in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Packera streptanthifolia checklist entry.

E-Flora BC: Packera streptanthifolia atlas page.

CalPhotos: Packera streptanthifolia photos.

USDA Plants: Packera streptanthifolia information.

16 photographs:
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