Page author: David Giblin
Senecio neowebsteri
Olympic Mountain ragwort

Distribution: Occurring west of the Cascades crest, where endemic to the Olympic Mountains of Washington.

Habitat: Talus slopes and rocky places.

Flowers: Aug.-Sept.

Origin: Native

Conservation Status: Not of concern


Perennial from a well-developed rhizome, the stem 0.5-2 dm. tall; herbage spider-webby at first, becoming nearly glabrous.


Basal leaves large, petiolate, sometimes tufted on separate short shoots, the blade broadly oblanceolate to sub-rotund, up to 7 cm. long a 4 cm. wide; cauline leaves few, usually strongly reduced; leaves often with purplish margins.


Heads solitary, nodding, the involucre 11-17 mm. high, the disk 1.5-2.5 cm. wide; involucre bracts in a single series, equal, herbaceous, the tips pale; ray flowers yellow, pistillate and fertile, the rays 10-15 mm. long; disk flowers yellow, perfect and fertile; pappus of white capillary bristles.


Achene sub-terete

Accepted Name:
Senecio neowebsteri S.F. Blake
Publication: Leafl. W. Bot. 8: 143. 1957. 1957.

Synonyms & Misapplications:
(none provided)
Additional Resources:

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

WA Flora Checklist: Senecio neowebsteri checklist entry.

E-Flora BC: Senecio neowebsteri atlas page.

CalPhotos: Senecio neowebsteri photos.

USDA Plants: Senecio neowebsteri information.

12 photographs:
Group by