- FortsonWells, E., The taxonomy of Saxifraga (Saxifragaceae) section Boraphila subsection Integrifoliae in western North America, Systematic Botany Monographs vol. 3(1): 1-?? (1984)
Synonymous genera:
- Cascadia A.M. Johnson (1927)
- Ciliaria Haw. (1821)
- Leptasea Haw. (1821)
- Muscaria Haw. (1821)
- Saxifragopsis Small (1896)
- Spatularia Haw. (1821)
- Zahlbrucknera Rchb. (1833)