E-Flora BC: Electronic Atlas of the Flora of British Columbia

Mentzelia dispersa S. Watson
bushy mentzelia (bushy blazingstar)
Loasaceae (Loasa family)

Introduction to Vascular Plants

© Peter Courtney  Email the photographer   (Photo ID #73019)

E-Flora BC Static Map
Distribution of Mentzelia dispersa
Click here to view our interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

Species Information

Click on the image below to view an expanded illustration for this species.

Annual herb from a taproot; stems ascending to erect, several, simple or branched, white-shiny, usually somewhat barbed throughout, sometimes becoming glabrous, 10-40 cm tall.
Basal leaves linear to shallowly lobed, 2-11 cm long; stem leaves alternate, often pinnatifid, linear to lanceolate, 2-11 cm long, lobed or unlobed, unstalked and entire to few-toothed above.
Inflorescence of few, unstalked flowers in a tight, terminal cluster; petals 5, yellow, 3-6 mm long; calyces 1-2 cm long, hairy, the lobes 2-4 mm long; stamens shorter than the petals; bracts egg-shaped.
Capsules, linear, 1-3 cm long; seeds 15-30, obscurely rough-pimply, appearing glabrous under 10x magnification, not flattened.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry slopes in the steppe zone; infrequent in SC BC; S to CO and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Mentzelia dispersa

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class




Elevation (metres) 510 707 905
Slope Gradient (%) 36 44 53
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
140 149 160
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 1 2
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: BG(1), IDF(1)


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References