Ceratozamia

Ceratozamia mexicana, copyright Tato Grosso.

Belongs within: Cycadophyta.

Ceratozamia is a Neotropical genus of cycads in which the sporophylls bear a pair of horns.

<==Ceratozamia
    |  i. s.: C. purpusiiMS98
    |--C. mixeorumNM11
    `--+--+--C. mirandaeNM11
       |  `--+--C. miquelianaNM11
       |     `--C. whitelockianaNM11
       `--+--+--C. decumbensNM11
          |  `--C. morettiiNM11
          `--+--+--C. microstrobilaNM11
             |  `--C. zaragozaeNM11
             `--+--C. fusco-viridisNM11
                `--+--C. huastecorumNM11
                   `--+--C. mexicanaNM11
                      `--+--C. latifoliaNM11
                         `--C. sabatoiNM11

*Type species of generic name indicated

References

[MS98] Margulis, L., & K. V. Schwartz. 1998. Five Kingdoms: An Illustrated Guide to the Phyla of Life on Earth 3rd ed. W. H. Freeman and Company: New York.

[NM11] Nagalingum, N. S., C. R. Marshall, T. B. Quental, H. S. Rai, D. P. Little & S. Mathews. 2011. Recent synchronous radiation of a living fossil. Science 334: 796–799.

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