Publication: N. Amer. Fl. 22: 138. 1905.
selected vouchers: WTU
Notes: FNA8: "In both habitat and morphology, Micranthes oregana is similar to M. pensylvanica. A thorough investigation of the two species, especially the populations in Colorado that are disjunct from those in Montana, is needed to clarify relationships. The name Saxifraga integrifolia was misapplied to M. oregana by early California authors."