This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol2", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Perennial low herbs, with densely tufted or matted copiously leafy caudices, sparingly leafy flower-stems, and alternate, 3-lobed or rarely 5-7-lobed leaves, the flowers solitary or few together in terminal cymes. Sepals 5, erect. Corolla white, regular, the petals relatively broad, clawless. Stamens 10; filaments subulate. Ovary about one-half inferior, the carpels united to above the middle. Follicles erect, except the sometimes slightly spreading tips, mostly included in the calyx-tube. [Latin, referring to the moss-like growth of the plants.]
About 35 species, most abundant on high mountains and in boreal regions. Type species: Saxifraga muscoides Wulf.
Saxifraga caespitosa L. Sp. Pl. 404. 1753.
Densely tufted, leaves clustered at the base, spatulate or fan-shaped, 3"-9" long, deeply 3-5-cleft or lobed into linear obtuse segments, glabrous; flowering stem erect, 2'-8' high, viscid-pubescent, at least above, linear-bracted or with several 3-lobed leaves; flowers 1-8, corymbose, 4"-7" broad, white; calyx-lobes ovate-oblong, obtuse or obtusish, much shorter than the obovate petals; capsule-tips divergent; base of the capsule adnate to the calyx.