Linnaeus named this genus in 1753.

     Intermountain Flora and the Synthesis combine the last two species shown below into Saxifraga rivularis.  

Alpine.  Rocky areas.  Summer.
Cinnamon Pass, August 1, 2007.

This species is quickly distinguished from the next two by the bulblets along the stem below the flower. There are also often bulblets in the basal leaf axils. Reproduction occurs mostly form the bulblets, rarely from seeds, but also occurs from the fibrous root system -- thus there will often be several plants near each other because they sprout from the roots.   Leaves are distinctively cute:

Linnaeus named this species in 1753 from a specimen collected in Lapland.

Alpine.  Rocky areas.  Summer.
Cinnamon Pass, August 1, 2007.

Subalpine, alpine. Mossy, rocky areas. Summer.
Sharkstooth Trail, July 14, 2006.

Very narrow stems with few tiny leaves surmount basal leaves on long petioles.  Plants are often found in clusters tucked into moist, rocky crevices.  This subspecies is considered a unique entity by Weber but is considered S. rivularis by Intermountain Flora, the Synthesis, and Utah Flora.

In 1864 George Engelmann named this species Saxifraga debilis (from a specimen collected by Harbour and Hall on their famous Colorado collecting expedition of 1862); Engelmann renamed it Saxifraga cernua variety debilis in 1872; Love, Love, and Kapoor renamed it  Saxifraga hyperborea subspecies debilis in 1971, and the most recent taxonomy combines it with Saxifraga rivularis shown at the bottom of this page.

Subalpine, alpine. Mossy, rocky areas. Summer.
Sharkstooth Trail, July 14, 2006.

Subalpine, alpine. Wet areas, tundra. Summer.
Spiller-Helmet Ridge. August 9, 2005.

Saxifraga rivularis sends out roots that sprout new plants and thus even though it is a tiny plant, its cluster of scalloped leaves and numerous white flowers attract attention -- if you are a slow moving hiker with wide open eyes.  Look for the plant in moist, shady, rocky areas and along alpine rivulets (hence its specific epithet and one of its common names, Alpine Brook Saxifrage).  The dainty white bell flowers often nod from atop slender stems which usually have a few leaves reduced in size.  Notice the similarity of the leaves of all three species shown on this page.  Also compare with the yellow-flowered Saxifraga platysepalus.

Linnaeus named this species in 1753.  It is circumboreal and is found in all western U. S. states and throughout Canada. 

Subalpine, alpine. Wet areas, tundra. Summer.
Spiller-Helmet Ridge. August 9, 2005.