XVI International Botanical Congess
A combination of ribosomal (internal transcribed spacers) and trnL/F (spacer and intron) DNA sequences were used to infer the phylogeny of Rosoideae. A previous study of ITS data alone had indicated that Potentilla as traditionally circumscribed is paraphyletic and that some parts are more closely related to other genera such as Alchemilla, Fragaria and Sibbaldia. The trnL/F data supports the ITS data to a large extent and the results from the combined analysis is congruent with the well supported clades of the ITS data. Most clades which were weakly supported in the ITS data yield better support in the combined analysis.