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

Symphyotrichum ciliatum (Ledeb.) G.L. Nesom
rayless alkali aster
Asteraceae (Aster family)

Introduction to Vascular Plants

© Curtis Bjork  Email the photographer   (Photo ID #21879)

E-Flora BC Static Map
Distribution of Symphyotrichum ciliatum
Click here to view our NEW 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.

Annual herb from a taproot; stems erect, simple or branched above, glabrous, 10-70 cm tall.
Basal leaves soon deciduous; stem leaves linear or nearly so, entire, 3-12 cm long, 1-9 mm wide.
Heads disciform, several to numerous in an open, branched or spikelike inflorescence; involucres 5-11 mm tall; involucral bracts equal or more often graduated in 2-3 series, linear, the tips sharp- to long-pointed, leafy, loose, glabrous; ray flowers lacking; female flowers white or pale lavender, more numerous than the disk flowers, with tubular-threadlike corollas.
Achenes appressed-hairy; pappus white, copious and soft, surpassing the corollas.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to mesic saline or alkaline sites in the steppe and lower montane zones; frequent in S BC east of the Coast-Cascade Mountains; N to YT and NT and E to MB and S to MN, MO, KS, CO and UT.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Symphyotrichum ciliatum

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) 440 893 1080
Slope Gradient (%) 0 0 2
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
90 90 90
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
5 5 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: IDF(3), PP(1)


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 brachyactis S.F. Blake
Brachyactis angusta (Lindl.) Britton
Brachyactis ciliata (Ledeb.) Ledeb.
Brachyactis ciliata subsp. angusta (Lindl.) A.G. Jones
Tripolium angustum Lindl.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References