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On the phylogenetic position of Cystodium: It's not a tree fern - It's a polypod!
Abstract
The phylogenetic position of Cystodium J. Sm. is studied here for the first time using
DNA sequence data. Based on a broad sampling of leptosporangiate ferns and two plastid
genes (rbcL and atpB), we show that Cystodium does not belong to the tree fern family
Dicksoniaceae, as previously thought. Our results strongly support including Cystodium
within the large polypod clade, and suggest its close relationship to the species-poor
grade taxa at the base of the polypod topology (Sphenomeris and Lonchitis, or Saccoloma
in this study). Further studies, with an expanded taxon sampling within polypods,
are needed to fully understand the more precise phylogenetic relationships of Cystodium.
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Journal articlePermalink
https://hdl.handle.net/10161/21866Published Version (Please cite this version)
10.1640/0002-8444(2006)96[45:OTPPOC]2.0.CO;2Publication Info
(2006). On the phylogenetic position of Cystodium: It's not a tree fern - It's a polypod!.
American Fern Journal, 96(2). pp. 45-53. 10.1640/0002-8444(2006)96[45:OTPPOC]2.0.CO;2. Retrieved from https://hdl.handle.net/10161/21866.This is constructed from limited available data and may be imprecise. To cite this
article, please review & use the official citation provided by the journal.
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Kathleen M. Pryer
Professor of Biology
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