Flowering scape stout, viscid-pubescent, 1 to 3½ feet high, with green bracts at the inflorescence, otherwise leafless. Leaves all basal, large, oval, ovate, obovate or oblanceolate, pubescent or nearly glabrous, 4 to 10 inches long, obtuse at the apex, narrowed below into a broad petiole, the margins denticulate or repand. Flowers in elongated, loose, terminal panicles, greenish. Each flower about one-eighth of an inch broad or slightly broader; the obtuse calyx lobes reflected; petals five, lanceolate or linear-lanceolate, twice as long as the calyx.
Memoir 15 N. Y. State Museum
Swamp Saxifrage - Micranthes pennsylvanica