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

Micranthes tolmiei
Tolmie's saxifrage
Saxifragaceae (Saxifrage family)

Introduction to Vascular Plants

© Virginia Skilton  Email the photographer   (Photo ID #4403)

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Distribution of Micranthes tolmiei
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Species Information

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Perennial herb from slender, woody stem-bases; flowering stems 3-8 cm tall, smooth or purplish glandular-hairy, leafless or with 1 to 3 leaves, many sterile leafy branches.
Basal leaves few, if any; stem leaves numerous below, alternate, usually crowded, persistent for years, pear- to spoon-shaped or oblanceolate, 3-10 mm long, entire, fleshy, smooth or bases fringed.
Inflorescence of terminal, single flowers or clusters of up to 4, lower branches often with leaf-like bractlets; petals white, 2.5-5 mm long, elliptic egg-shaped to broadly oblanceolate, clawed or not; calyces saucer-shaped, joined to the lower portion of the ovary, free hypanthium absent, smooth, purple-tinged, the lobes oval to oblong egg-shaped, 2-3 mm long, spreading; stamens 10.
Capsules, 8-12 mm long, often purplish-mottled; seeds light brown, about 0.8 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist rock outcrops, streambanks, snowbed sites and scree slopes in the upper subalpine and alpine zones; frequent in the Coast-Cascade Mountains N to 57degreeN and Vancouver Island, rare on the Queen Charlotte Islands and in E BC; N to SE AK and S toMT, ID, NV and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Micranthes tolmiei

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) 180 1728 2480
Slope Gradient (%) 0 17 70
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 47 355
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 4 8
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: AT(10), BAFA(17), CMA(24), ESSF(2), IMA(1), MH(8)

Synonyms and Alternate Names

Saxifraga tolmiei Torr. & A. Gray

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References