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

Saxifraga flagellaris Willd. ex Sternb.
Spider Saxifrage (Alaska saxifrage; Nodding Saxifrage; stoloniferous saxifrage; whiplash saxifrage)
Saxifragaceae (Saxifrage family)

Introduction to Vascular Plants

© Alfred Cook  Email the photographer   (Photo ID #29270)

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Distribution of Saxifraga flagellaris
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Saxifraga flagellaris ssp. setigera

Species Information

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Perennial herb from dense fibrous roots; stems 3-15 cm tall, purplish-glandular-hairy; several to many threadlike, leafless stolons to 10 cm long, with small, rooting rosette at ends.
Basal leaves in a rosette, oblanceolate to spoon-shaped, 0.5-2 cm long, 1-4 mm wide, entire, fringed with coarse, spiny hairs and a tooth-like point at tips; stem leaves numerous, alternate, reduced upwards.
Inflorescence terminal, of 1 to 3 flowers; petals bright yellow, wedge-egg-shaped, 6-12 mm long, 5- to 9-veined, narrowed to a broad, claw-like base; calyces bell-shaped, 3-4.5 mm long, joined to ovary for part of length, the free hypanthium absent, the calyx lobes 5, triangular to oblong-lanceolate, 2.5-4.5 mm long, greenish, glandular-hairy, ascending; stamens 10.
Capsules, 4-10 mm long; seeds brownish, about 0.6 mm long, nearly smooth.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry to moist meadows, fellfields and ridges in the alpine zone, predominantly on limestone; infrequent in N BC south to 55degreeN, disjunct in the Itcha Range (Chilcotin area); amphiberingian, N to AK, YT and W NT and E to AB; NE Asia.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Saxifraga flagellaris

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) 604 1786 2300
Slope Gradient (%) 0 21 91
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 262 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 2 5
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: BAFA(34), ESSF(3), ICH(1), IMA(2), SWB(2)

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References