Micranthes odontoloma (Brook Saxifrage)
Saxifragaceae (Saxifrage Family)

Subalpine. Streamsides. Summer.

Charles Piper ((1867-1926) named this species Saxifraga odontoloma in 1906 and Amos Heller ((1867-1944) renamed it Micranthes odontoloma in 1912.  "Micranthes" is Greek for "small flower". "Odon" is Greek for "tooth" and "loma" is "fringe", both probably referring to the leaf margin.

"Saxifrage" means "rock breaker", and the name is most likely derived from two sources: the Saxifrage Family habit of growing in rocky areas and therefore by the doctrine of associations with its former medicinal use for breaking kidney stones.

    The Saxifraga genus has about 400 species worldwide, about 70 in North America.  Some species occur (according to Intermountain Flora) on the "north  coast of Greenland as far north as any flowering plant can survive".