Cycadophyta]]
| Cycadopsida
| Cycadales
| Zamiaceae
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| Dioon eduleVovides et al, CAM-cycling in the cycad Dioon edule Lindl. in its natural tropical deciduous forest habitat in central Veracruz, Mexico, Botanical Journal of the Linnean Society 138(2): 155–162 (2002)
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