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

Euthamia occidentalis Nutt.
western goldenrod (western goldentop)
Asteraceae (Aster family)

Introduction to Vascular Plants

© Paul Handford  Email the photographer   (Photo ID #68636)

E-Flora BC Static Map
Distribution of Euthamia occidentalis
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Species Information

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Perennial herb from a creeping rhizome, stems erect, glabrous throughout except for the rough-hairy margins of the leaves, 0.5-2.0 m tall.
Basal leaves lacking; stem leaves alternate, unstalked, lance-linear, 3-nerved, gland-dotted, up to 10 cm long and 1 cm wide, glabrous and sometimes glaucous; lower stem leaves soon deciduous.
Heads with ray and disk flowers, short-stalked in an interrupted, elongated inflorescence; involucres egg-shaped, 3-5 mm tall; involucral bracts with broadly sharp-pointed to long-pointed tips, 1-nerved, straw-coloured, sometimes green-tipped; ray flowers yellow, 15-30, usually 1.5-2.5 cm long; disk flowers yellow.
Achenes compressed, stiff-hairy; pappus of white, hairlike bristles.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Blooming Period:
Late Summer
Fruit/Seed characteristics:
Colour: Brown
Present from Summer to Fall
Source:  The USDA

Habitat / Range

Moist river banks and lakeshores in the steppe zone; frequent in SC BC; E to AB and S to NE, AZ, NM and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Euthamia occidentalis

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) 847 1035 1140
Slope Gradient (%) 2 8 15
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
100 129 160
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 4 6
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(3)


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.

Synonyms and Alternate Names

Euthamia californica Gandog.
Euthamia linearifolia Gandog.
Solidago occidentalis (Nutt.) Torr. & A. Gray

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References