A new classification and linear sequence of extant gymnosperms

@article{Christenhusz2011ANC,
  title={A new classification and linear sequence of extant gymnosperms},
  author={Maarten J.M. Christenhusz and James Lauritz Reveal and Aljos Farjon and Martin F. Gardner and Robert Reid Mill and Mark W. Chase},
  journal={Phytotaxa},
  year={2011},
  volume={19},
  pages={55-70}
}
A new classification and linear sequence of the gymnosperms based on previous molecular and morphological phylogenetic and other studies is presented. Currently accepted genera are listed for each family and arranged according to their (probable) phylogenetic position. A full synonymy is provided, and types are listed for accepted genera. An index to genera assists in easy access to synonymy and family placement of genera. 
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