Symphyotrichum laeve (L.) Á. Löve & D. Löve
smooth aster
Asteraceae (Aster family)

Introduction to Vascular Plants


© Jamie Fenneman     (Photo ID #30149)


E-Flora BC Static Map

Distribution of Symphyotrichum laeve
Click here to view the full interactive map and legend

Species Information

Perennial herb from a fibrous-rooted, usually short rhizome or woody stem-base; stems erect, branched above, glabrous or nearly so, 0.4-1.2 m tall.
Basal leaves stalked and soon deciduous; stem leaves lanceolate to broadly lanceolate or egg-shaped, unstalked and usually clasping, 8-18 cm long, 1-3.5 cm wide, entire or shallowly toothed, glabrous or nearly so and tending to be glaucous.
Heads with ray and disk flowers, few to many in an open, round-topped inflorescence; involucres 5-7 mm tall; involucral bracts graduated, linear or often awl-shaped, sharply pointed with elongate green tips, margins fringed with small hairs; ray flowers 15-30, blue or purple, 6-10 mm long; disk flowers yellow.
Achenes 4-5 nerved, glabrous; pappus usually reddish.

SourceThe Illustrated Flora of British Columbia


Ecological Framework for Symphyotrichum laeve

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)
1187 500 2012
Slope Gradient (%)
27 0 82

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

212 10 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 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(22), ICH(5), IDF(55), MS(25), PP(2)

Habitat and Range

Mesic to dry meadows and forests in the lowland and montane zones; common in S BC east of the Coast-Cascade Mountains and S of 55degreeN, less frequent in NE BC and S Vancouver Island, lacking from NW BC; N to NT, E to ON and S to KS, MO, UT, NM and OR.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Aster laevis