Saxifrage

Saxifrage, any of a genus (Saxifraga) of small rock plants whose leaves grow in a rosette at the base of the stem and whose flowers grow in clusters at the tip of the stem. Many of them produce a small bulb at the base of each leaf. The usual place to find saxifrages is in crevices and ledges of rocky cliffs in cold and temperate regions of the Northern Hemisphere. Several species are native to the United States, including the early saxifrage (S. virginiensis) and the umbrella plant (S. peltata).