Page authors: Don Knoke, David Giblin
Nothocalais troximoides
weevil prairie dandelion, false agoseris

Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Montana, Wyoming and Utah.

Habitat: Dry, open areas from and foothills, especially in lithosol.

Flowers: April-June

Origin: Native

Conservation Status: Not of concern


Perennial from a stout root, 5-30 cm. tall, the naked peduncle glabrous or with fine, short hairs, the juice milky.


Leaves all basal, crowded, narrow, elongate, rarely over 1 cm. wide, 20-50 times as long as wide, the margins more or less wavy.


Heads solitary; involucre 15-25 mm. high, its bracts lanceolate or narrower, with a dark mid-rib; corollas all ligulate, yellow; pappus of 1-30 tapered, bristle-like, white scales, less than 0.5 mm. wide, the fruiting heads forming a dandelion-like ball at maturity.


Achenes 8-10 mm. long, with fine hairs on the terminal portion.

Accepted Name:
Nothocalais troximoides (A. Gray) Greene
Publication: Bull. Calif. Acad. Sci. 2: 55. 1886.

Synonyms & Misapplications:
Microseris troximoides A. Gray [HC]
Scorzonella troximoides (A. Gray) Jeps.
Additional Resources:

PNW Herbaria: Specimen records of Nothocalais troximoides in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Nothocalais troximoides checklist entry.

E-Flora BC: Nothocalais troximoides atlas page.

CalPhotos: Nothocalais troximoides photos.

USDA Plants: Nothocalais troximoides information.

65 photographs:
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