| Abstrakt: |
Classification of PotentillaL. has varied considerably through time. Some authors have collapsed all of the Potentilleae tribe into a single genus, while others have divided it into more than 20 genera. All those classifications, except for the one that collapsed them all, have rendered the genus Potentillapolyphyletic. We discuss Potentillafrom a phylogenetic perspective in order to achieve a reasonable classification in which Potentillais based on a clade (monophyly). Other criteria are taken into account, namely: history, phylogenetic stability, gene flow, information content and ease of identification. All previously described genera in Potentillinae are briefly discussed and assigned to major clades. In order to do this, it was necessary to designate types for: FragaLapeyr., TrichothalamusSpreng., and DactylophyllumSpenn. We discuss seven scenarios, representing the effects of classifying Potentillaat the seven major clades in Potentillinae, and conclude that the most supported and least disruptive is to classify Potentillaas the clade comprising all of Potentillinae excluding the Anserina clade. |
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