Page authors: Don Knoke, David Giblin
Mentzelia albicaulis
white-stem blazing-star

Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.

Habitat: Dry, usually sandy soil in the shrub-steppe to the foothills.

Flowers: May-July

Origin: Native

Growth Duration: Annual

Conservation Status: Not of concern

Pollination: Bumblebees, bees


Pubescent to glabrous annual, the simple or freely-branched stems 1-4 dm. tall, whitish and shining.


Leaves alternate, scabrous and brittle, various, 2-10 cm. long; basal leaves narrowed to petioles, linear and entire; cauline leaves sessile to petiolate, linear to lanceolate, entire to laciniate into linear lobes: floral leaves broader, few-toothed.


Flowers few in open cymes; calyx 1-2 cm. long, the 5 lobes 2-4 mm. long; petals 5, distinct, yellow, 2-6 mm. long; stamens 15-35, shorter than the petals; style 1, ovary inferior.


Capsule narrowly club-shaped, 1-2.5 cm. long and 2 mm. thick.

Accepted Name:
Mentzelia albicaulis (Douglas ex Hook.) Douglas ex Torr. & A. Gray
Publication: Fl. N. Amer. 1(3): 534. 1840.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Mentzelia albicaulis in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Mentzelia albicaulis checklist entry

OregonFlora: Mentzelia albicaulis information

E-Flora BC: Mentzelia albicaulis atlas page

CalPhotos: Mentzelia albicaulis photos

39 photographs:
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