The main evolutionary lineages of cinquefoils are investigated in this recently published open access article from the Rosaceae Evolution research group at the University of Bergen.
Our recent open access paper published in 2020 shows that two widespread species of cinquefoil stem from the same hybridization events in their evolutionary history.
This article from 2015 shows the flowering plant genus Sibbaldia to be a polyphyletic assemblage of unrelated species.