Saxifraga rivularis var. flexuosa (Sternberg) Engler & Irmscher

Saxifraga rivularis var. flexuosa (Sternberg) Engler & Irmscher is a synonym sensu FNA Ed. Comm., 2009 of:

Saxifraga hyperborea R. Brown, an accepted species name sensu FNA Ed. Comm., 2009.