Page author: David Giblin
Mentzelia dispersa
bushy blazing star
WTU specimens
Other herbaria

Distribution: East of the Cascades in Washington; Washington south to southern California, east to Montana and Colorado.

Habitat: Dry soil, from the plains into the canyons and slopes of the lower mountains.

Flowers: May-July

Origin: Native

Conservation Status: Not of concern

Description:
General:

Finely pubescent annual, the stems 1-4 dm. tall, simple or freely-branched, single or several.

Leaves:

Leaves mostly alternate, scabrous and brittle, lanceolate to ovate-lanceolate, entire to wavy margined to deeply lobed; lower leaves short-petiolate, upper leaves sessile, bracteate leaves opposite.

Flowers:

Flowers irregularly cymose in compact clusters; calyx lobes 5, 2 mm. long; petals 5, distinct, yellow, 3-6 mm. long; stamens 15-35, shorter than the petals; style 1, ovary inferior.

Fruits:

Capsule linear, 1-3 cm. long, 1.5-2 mm. thick.

Accepted Name:
Mentzelia dispersa S. Watson
Publication: Proc. Amer. Acad. Arts 11: 115, 137. 1876.

Synonyms & Misapplications:
Mentzelia dispersa S. Watson var. compacta (A. Nelson) J.F. Macbr. [KZ99]
Mentzelia dispersa S. Watson var. dispersa [KZ99]
Mentzelia dispersa S. Watson var. latifolia (Rydb.) J.F. Macbr. [KZ99]
Additional Resources:

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

WA Flora Checklist: Mentzelia dispersa checklist entry.

E-Flora BC: Mentzelia dispersa atlas page.

CalPhotos: Mentzelia dispersa photos.

USDA Plants: Mentzelia dispersa information.

32 photographs:
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