Molecular Phylogeny of the Jimsonweed Genus Datura (Solanaceae)

摘要: Phylogenetic analyses were performed based on four plastid DNA sequences to determine if the Daturae and Datura are monophyletic understand their relationships classification. Species of have been divided into three sections upon position type fruit: Ceratocaulis, Datura, Dutra. Our confirmed monophyly clade with two genera, herbaceous species Brugmansia woody species. The consists distinct lineages, that D. ceratocaula, corresponding monospecific section one gives rise remaining genus. large readily divides groups but they do not correspond conventional classification regularly dehiscent capsular fruits present in both while irregularly capsules found only group. Because Dutra is polyphyletic, realignment within traditional necessary as follows: containing arenicola, discolor, ferox, quercifolia, kymatocarpa, leichhardtii, stramonium; inoxia, lanosa, metel, reburra, wrightii. seed margin clearly distinguishes these sections, rather than combination fruit dehiscence which has used previously.