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The evolutionary history of the genus Potentilla (Rosaceae) is complicated by the fact that many of its species contain multiple sets of genomes (polyploidy). Using low-copy nuclear DNA markers that represent each of these genomes, initial findings suggest that several species have arisen through genome doubling in combination with hybridisation (allopolyploidisation). This makes their evolutionary history better described as a reticulate pattern, rather than a traditional bifurcating tree.

Focusing on Potentilla norvegica, norwegian cinquefoil, it is suggested that this species is the result of multiple hybridisations, one of which took place in North America with the closely related genera Horkelia and Ivesia. These genera are, based on multple molecular studies, nested in Potentilla. Thus, a revision of Potentilla, Horkelia and Ivesia is clearly needed.

  • 2020. Planter med mange genom og en ny type slektstre. Årbok for Universitetsmuseet i Bergen.
  • 2020. Detecting destabilizing species in the phylogenetic backbone of Potentilla (Rosaceae) using low-copy nuclear markers. AoB Plants. 1-13.
  • 2020. Complex patterns of reticulate evolution in opportunistic weeds (Potentilla L., Rosaceae), as revealed by low-copy nuclear markers. BMC Evolutionary Biology. 17 sider.
  • 2019. Finding the cinquefoil phylogenetic backbone: Resolving the position of moving clades in Potentilla (Rosaceae).
  • 2019. Complex patterns of reticulate evolution in Potentilla L. (Rosaceae) involving P. norvegica and the endemic North American Ivesioid clade.
  • 2018. Untangling the origin of polyploids - Reticulate evolution in Potentilla L. (Rosaceae), based on low-copy nuclear markers.
  • 2018. Untangling the origin of a polyploid - The evolutionary history of Potentilla norvegica L. (Rosaceae) based on a single-copy nuclear marker.
  • 2018. Nannie Persson fascineras av fingerörternas hemligheter .
  • 2018. Med Botanisk Forening på ekskursjon til Island.
  • 2018. Följ med på inventering i de svenska lappmarkerna. Vilda Växter. 22-25.
  • 2017. The evolutionary history of the Potentilla 'core goup'.
  • 2016. Phylogenetic relationships of the ‘Briza complex’ to other members of the subfamily Pooideae (Poaceae). Plant Ecology and Evolution. 216-227.

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