USDA lists two varieties, ITIS lists no varieties.
var. subintegra: Oklahoma saxifrage; found only in OK
var. virginiensis: early saxifrage; found throughout eNA.
Note rosette of broadly toothed oval leaves, hairy stem with cluster of five white petal flowers with 10 yellow stamens.
Piedmont, SC
TRAIL: Wine Creek
HABITAT: creekside bluff
ELEVATION: 60 m (200 ft)
BLOOM TIME: 26-MAR