Page authors: Don Knoke, David Giblin
Senecio fremontii
dwarf mountain butterweed

Distribution: Occurring on both sides of the Cascades crest and in the Olympic Mountains in Washington; British Columbia to California, east to Alberta, Montana, Wyoming, and Utah.

Habitat: Open, rocky slopes at high elevations in the mountains

Flowers: July-September

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bumblebees, bees, butterflies, flies, beetles


Glabrous perennial, somewhat succulent, from a taproot, freely branched from a decumbent base, about 1 dm. tall, or the stem somewhat longer and sprawling.


More or less toothed, 1-4 cm. long and up to 2 cm. wide, well distributed along the stems, the lowermost ones reduced, the others mostly obovate to spatulate, tapering to a narrow or shortly-petiolate base.


Single heads terminating the branches, usually with a short peduncle; involucre 7-12 mm. high, the principle bracts about 13; rays 6-10 mm. long, yellow.

Identification Notes:

The small plant, never strictly upright, with many small, rather succulent leaves on the stems and no basal leaves, separates this species from the others.

Accepted Name:
Senecio fremontii Torr. & A. Gray
Publication: Fl. N. Amer. 2: 445. 1843.

Synonyms & Misapplications:
Senecio ductoris Piper
Additional Resources:

PNW Herbaria: Specimen records of Senecio fremontii in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Senecio fremontii checklist entry.

OregonFlora: Senecio fremontii information.

E-Flora BC: Senecio fremontii atlas page.

CalPhotos: Senecio fremontii photos.

USDA Plants: Senecio fremontii information.

28 photographs:
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