Herbs rhizomatous, not stoloniferous; rhizome woody, sometimes slightly elongated. Flowering stems erect, leafless, 6-25 cm, stipitate-glandular, hairs unicellular. Leaves in basal rosette and cauline; cauline leaves 1-2, reduced distally to sessile bracts; stipules barely expanded petiole bases; petiole jointed distally at attachment to blade, separating early from blade, sparsely stipitate-glandular; blade broadly obovate-cuneate, not lobed, base cuneate, ultimate margins coarsely 7-11-toothed distally, ciliate, apex acute to obtuse, surfaces glabrous or scantily stipitate-glandular; venation palmate. Inflorescences compact thyrses, terminal from terminal bud in basal rosette, 27-90-flowered, bracteate. Flowers: hypanthium adnate to ovary in proximal 1/2, free from ovary 0.2 mm, greenish; sepals 5, green; petals 5, white, unlobed; nectary tissue inconspicuous or absent; stamens 10; filaments filiform; ovary 1/2 inferior, 2-locular, carpels connate in proximal 1/4; placentation axile; styles 2, (distinct); stigmas 2. Capsules 2-beaked. Seeds brown, ovoid-prismatic, smooth or ribbed. x = 7.
Features of Saxifragopsis that make it discordant within the relatively large and diverse genus Saxifraga include the thick, woody rhizome; early separation of the leaf blade from its joint with the petiole; unicellular, glandular trichomes; and beaklike form of the styles having no counterparts in Saxifraga, although that is where the single species of Saxifragopsis is most often placed (P. A. Munz 1968).
This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].