Система подтрибы Potentillinae J. Presl (Rosaceae Juss.)

A new system of subtribe Potentillinae J. Presl down to the rank of sections is presented. The Fragariastrum and Tormentilla groups of the genus Potentilla L. is classified here as distinct genera, supported by results of molecular studies and morphological differences. Most of species of these groups formerly included in Potentilla are transferred to the separate genera Fragariastrum Heist. ex Fabr. and Tormentilla L. New combinations in Argentina Hill, Horkelia Cham. et Schltdl., and Potentilla are also validated; some sections of these genera are lectotypified. The need of a new typification of Potentilla with subsequent conservation of the name in order to avoid nomenclatural instability is briefly discussed; finally, five new sections within Argentina are described