Relationships among "ancient araliads" and their significance for the systematics of Apiales

Molecular Phylogenetics and Evolution
Gregory M Plunkett, Porter P Lowry

Abstract

The relationship between the angiosperm families Apiaceae and Araliaceae (order Apiales) has been difficult to resolve, due in large part to problems associated with taxa characterized by a mixture of features typical of both families. Among such confounding groups are the araliads Delarbrea, Pseudosciadium, Myodocarpus, Mackinlaya, and Apiopetalum and many members of Apiaceae subfamily Hydrocotyloideae. Traditional systems have often envisioned these taxa as phyletic intermediates or bridges between the two families. To reevaluate the phylogenetic position of the "intermediate" araliad genera, molecular data were collected from nuclear (rDNA ITS) and plastid (matK) sequences from a complete or near-complete sampling of species in each genus. When analyzed with samples representing the other major clades now recognized within Apiales, results confirm and expand the findings of previously published studies. The five araliad "intermediates" are placed within two well-supported clades clearly segregated from the "core" groups of both Apiaceae and Araliaceae. These segregate clades closely parallel traditional definitions of the araliad tribes Myodocarpeae (Delarbrea, Pseudosciadium, and Myodocarpus) and Mackinlayeae (Mackinlaya an...Continue Reading

References

Feb 21, 1998·Proceedings of the National Academy of Sciences of the United States of America·P VargasL Constance
Aug 1, 1996·Trends in Ecology & Evolution·J William, O Ballard

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Citations

Feb 27, 2007·Molecular Phylogenetics and Evolution·Carolina I Calviño, Stephen R Downie
Nov 26, 2004·Evolution; International Journal of Organic Evolution·Jonathan P Price, Warren L Wagner
May 25, 2012·The New Phytologist·Filip VandelookRobin J Probert
Oct 1, 2004·American Journal of Botany·Walter S Judd, Richard G Olmstead
Dec 1, 2006·American Journal of Botany·Carolina I CalviñoStephen R Downie
Jul 22, 2021·American Journal of Botany·James J ClarksonWilliam J Baker

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