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

Introduction to Vascular Plants


© Ryan Batten     (Photo ID #68184)


E-Flora BC Static Map

Distribution of Eurybia radulina
Click here to view the full interactive map and legend

Species Information

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.

SourceThe Illustrated Flora of British Columbia


If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.


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)
1092 810 1555
Slope Gradient (%)
20 0 70

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

235 200 285
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 1 7
Modal Nutrient Regime
# 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)

Habitat and Range

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

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Aster eliasii A. Nelson
Aster radulinus A. Gray
Weberaster radulinus (A. Gray) A. L÷ve & D. L÷ve