Saussurea americana D.C. Eaton
American sawwort (American saw-wort)
Asteraceae (Aster family)

Introduction to Vascular Plants

Photograph

© Virginia Skilton     (Photo ID #10424)


Map

E-Flora BC Static Map

Distribution of Saussurea americana
Click here to view the full interactive map and legend

Species Information

General:
Perennial herb from a fibrous root; stems erect, solitary, branched above, sparsely woolly-hairy when young, 0.3-2 m tall.
Leaves:
Basal leaves lacking; stem leaves alternate, egg-shaped to triangular or lanceolate, the bases squared off or wedge- or heart-shaped, stalked, the blades 5-15 cm long, 1-7 cm wide, strongly toothed, sparsely woolly-hairy when young, persistently so on the lower surfaces, upper leaves unstalked or with very short stalks.
Flowers:
Heads discoid, solitary at ends of branches in a clustered inflorescence; involucres 10-14 mm tall; involucral bracts in 3-4 series, the margins and tips dark pigmented, the outer bracts egg-shaped, shorter than the inner, long-hairy; disk flowers pale purple or rarely white, 8-21 (typically 13); receptacles papery.
Fruits:
Achenes oblong, nerved, 4-6 mm, glabrous; pappus of brownish, feathery bristles.

SourceThe Illustrated Flora of British Columbia

Illustration

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.

Ecology

Ecological Framework for Saussurea americana

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

Avg

Min

Max

Elevation (metres)
1279 1136 1422
Slope Gradient (%)
43 37 50

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

177 166 190
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 3 3
Modal Nutrient Regime
Class
D
# of field plots
 species was recorded in:
2
Modal BEC Zone Class
SBS

All BEC Zones (# of stations/zone) species was recorded in

MH(1), SBS(1)

Habitat and Range

Moist lush meadows and avalanche tracks in the montane and subalpine zones; frequent, but scattered, in and W of the Coast-Cascade Mountains in W BC; N to AK and YT, E to AB and S to ID, WA and NE OR.

SourceThe Illustrated Flora of British Columbia