@ARTICLE{TreeBASE2Ref14998, author = {Maarten J. M. Christenhusz and Hanna Tuomisto and J. S. Metzgar and Kathleen M. Pryer}, title = {Evolutionary relationships within the Neotropical eusporangiate fern genus Danaea (Marattiaceae)}, year = {2007}, keywords = {}, doi = {}, url = {}, pmid = {}, journal = {Molecular Phylogenetics and Evolution}, volume = {}, number = {}, pages = {}, abstract = {Genera within the eusporangiate fern family Marattiaceae have long been neglected in taxonomic and systematic studies. Here we present the first phylogenetic hypothesis of relationships within the exclusively Neotropical genus Danaea based on a sampling of 60 specimens representing 31 species from various Neotropical sites. We used DNA sequence data from three plastid regions (atpB, rbcL, and trnL-F), field observations, and morphological and geographical information to examine evolutionary patterns. Eleven representatives of five other marattioid genera (Angiopteris, Archangiopteris, Christensenia, Macroglossum, and Marattia) were used to root the topology. We identify three well-supported clades within Danaea that are consistent with morphological characters. Although the plastid markers used here do not provide resolution within some species complexes, our phylogenetic hypothesis does provide a robust framework within which broad questions related to the morphology, taxonomy, biogeography, evolution, and ecology of these ferns can be addressed. Keywords: atpB; Danaea; edaphic specialization; ferns; Marattiaceae; molecular phylogeny; Neotropics; rbcL; speciation; systematics; trnL-F.} }

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