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

Eurybia radulina (A. Gray) G.L. Nesom
rough-leaved aster
Asteraceae (Aster family)

Introduction to Vascular Plants

© Ryan Batten  Email the photographer   (Photo ID #68184)

E-Flora BC Static Map
Distribution of Eurybia radulina
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.

Perennial herb from a slender rhizome; stems few to several, ascending to erect, sparsely to copiously short-hairy, often purple, branched above, 10-70 cm tall.
Basal leaves soon deciduous; stem leaves largest below, broadly oblanceolate or spoon-shaped, tapering to the unstalked or stalked base, 4-13 cm long, 1-4 cm wide, the middle and uppermost more gradually reduced and broader in shape, sparsely to copiously short-hairy on the lower surfaces, mostly sharply saw-toothed or toothed except at the base.
Heads with ray and disk flowers, few to more often numerous in a mostly short and flat-topped inflorescence; involucres 6-9 mm tall; involucral bracts graduated in several series, the outer oblong, the inner linear, usually abruptly sharp-pointed, stiff-hairy on the back with a strong midrib, evidently to obscurely green-tipped, often strongly purple-margined; ray flowers 10-15, white to pale violet, 8-12 mm long; disk flowers yellow, 7-8 mm long, the tube longer than the slender limb.
Achenes smooth, sparsely stiff-hairy; pappus tawny.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry rock outcrops and open forests in the lowland zone; rare in SW BC, known only from SE Vancouver Island; S to CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Eurybia radulina

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) 810 1092 1555
Slope Gradient (%) 0 20 70
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
200 235 285
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 4 7
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: ESSF(1), ICH(1), IDF(3), SBS(2)


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

Aster eliasii A. Nelson
Aster radulinus A. Gray
Weberaster radulinus (A. Gray) A. L÷ve & D. L÷ve

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References