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Gymnosperm

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Revision as of 10:52, 24 January 2010 by Macdonald-ross (talk | changes)

Gymnospermae
White Spruce leaves (needles)
Scientific classification
Kingdom:
Divisions

Pinophyta (or Coniferophyta) - Conifers
Ginkgophyta - Ginkgo
Cycadophyta - Cycads
Gnetophyta - Gnetum, Ephedra, Welwitschia

kauri cone

A gymnosperm is a type of seed plant. The term comes from the Greek word (γυμνός) for "naked seed", gumnospermos. One example is the fir tree.

Phylogenetics


angiosperms


gymnosperms

cycads [1]



Ginkgo





Pinaceae (the pine family)



gnetophytes




other conifers





Other websites

References

  1. Chung-Shien Wu, Ya-Nan Wang, Shu-Mei Liu and Shu-Miaw Chaw (2007). "Chloroplast Genome (cpDNA) of Cycas taitungensis and 56 cp Protein-Coding Genes of Gnetum parvifolium: Insights into cpDNA Evolution and Phylogeny of Extant Seed Plants". Molecular Biology and Evolution. 24 (6): 1366–1379. doi:10.1093/molbev/msm059.{{cite journal}}: CS1 maint: multiple names: authors list (link)