1. Margins of basal leaves with crowded teeth and white lime-encrusted pores.
1. Margins of basal leaves entire except for (2–) 3 prominent spine-tipped apical teeth.
All species found in Saxifraga
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 28, 2020. https://michiganflora.net/genus.aspx?id=Saxifraga.