@ARTICLE{TreeBASE2Ref15606, author = {David J. Goyder and Ashley Nicholas and Sigrid Liede-Schumann}, title = {Phylogenetic relationships in subtribe Asclepiadinae (Apocynaceae: Asclepiadoideae)}, year = {2006}, keywords = {}, doi = {}, url = {}, pmid = {}, journal = {Annals of the Missouri Botanical Garden}, volume = {}, number = {}, pages = {}, abstract = {A first approximation of evolutionary relationships within the Asclepiadinae (Apocynaceae: Asclepiadoideae) is inferred from two DNA datasets, from the nuclear ITS region, and from plastid trnT-L & trnL-F spacers & trnL intron. Both the subtribe as a whole, and the phylogenetic radiation of largely herbaceous genera around Asclepias are monophyletic and well supported. While resolution within the Asclepias complex is limited, the lineages identified demonstrate that current generic delimitation is unsatisfactory. Asclepias should either be restricted to New World members of the subtribe, or expanded to encompass the entire radiation. In the African species, it is shown that although the corona is taxonomically important for recognizing species, it can be misleading as an indicator of phylogenetic relationship. Vegetative similarities often prove a more reliable guide, but more detailed studies are needed to refine these lineages and to detect morphological characters to aid in their practical recognition.} }

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