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..
Slender perennial herbs, with mainly basal long-petioled reniform-orbicular crenate or slightly lobed leaves, and small white cymose-paniculate flowers. Calyx-tube campanulate, adnate to the base of the ovary, its limb 5-lobed, the lobes erect. Petals 5, spatulate, marcescent. Stamens 5, inserted at the base of the calyx-lobes. Filaments short. Ovary 2-celled, 2-beaked, ripening into a 2-beaked capsule. Styles 2. Ovules ∞. Seeds winged on both sides. [Named in honor of William Starling Sullivant, 1803-1873, American botanist.]
Four known species, the following of eastern North America, the others of the western States. Type species: Saxifraga Sullivantii T. & G.
Saxifraga (?) Sullivantii T. & G. Fl. N. A. 1:
Club 5: 178. 1894.
Stem scapose, nearly leafless, weak, reclined, slightly glandular-pubescent, 6'-15' long. Leaves long-petioled, 1'-3' wide, and wider than long, reniform-cordate at the base, crenate-dentate or somewhat lobed, sparingly pubescent or glabrous; panicle ample, sometimes leafy-bracted, loose, glandular; pedicels slender, recurved in fruit; flowers white, about 2" broad; calyx-lobes ovate, not nerved, acutish; petals spatulate, entire, exceeding the stamens.
On cliffs, Ohio and Indiana. June.
Sullivantia Hapemanii (Coult. & Fisher) Coulter, with 3-nerved calyx-lobes and obo-vate or oval-rhombic petal-blades, has been found in Wisconsin and Minnesota and ranges to Wyoming and Colorado.