bekkesildre
Jørgensen MH et al. Taxonomy and Evolutionary Relationships in the Saxifraga rivularis Complex. Systematic Botany 31(4), 702-729. Westergaard KB et al. 2010. The extreme Beringian/Atlantic disjunction in Saxifraga rivularis (Saxifragaceae) has formed at least twice. Journal of Biogeography.