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
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Species Information

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General:
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.
Leaves:
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.
Flowers:
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.
Fruits:
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

Ecology

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

Minimum

Average

Maximum

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
Class
C
Number of field plots
 species was recorded in:
7
Modal BEC Zone Class
IDF
All BEC Zones (# of stations/zone) species was recorded in: ESSF(1), ICH(1), IDF(3), SBS(2)

Climate

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