Sibbaldia – a molecular phylogenetic study of a polyphyletic genus in Rosaceae
(English)Manuscript (preprint) (Other academic)
Using DNA sequence data from nuclear ribosomal ITS in combination with plastid trnLF spacer and trnL intron data we show that Sibbaldia is a polyphyletic assemblage. It falls into five separate clades of Potentilleae, three within Fragariinae, and two within Potentilla (Potentillinae sensu Soják). In the main, our phylogenetic results agree with the findings by Soják (2008) which were based on anther structure. Four of our sampled Sibbaldia species remain in Sibbaldia, one [adpressa] is classified in Sibbaldianthe, one species [perpusilloides] is considered to represent an undescribed genus in Fragariinae, one [micropetala] is nested within the Potentilla anserina clade, and four species belong in a basal clade of Potentilla. Sibbaldiopsis is very close to Sibbaldia, and its single species should be named Sibbaldiopsis retusa (O.F. Müller) T. Erikss. and M. Lundberg.
Sibbaldia, Potentilleae, Fragariinae, polyphyly, taxonomy, phylogeny, Bayesian inference, convergence diagnostics
Research subject Systematic Botany
IdentifiersURN: urn:nbn:se:su:diva-56687OAI: oai:DiVA.org:su-56687DiVA: diva2:412170