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Phylum Cycadophyta -- cycads Cycadophyta comprise a small extant phylum. In Texas, the most commonly encountered genus is Cycas -- commonly called "sago". In central Texas, sago survives most winters, but can be killed in extremely cold ones. Cycads are heterosporous and, in addition, produce highly specialized, complex reproductive and dispersal structures called seeds. Cycad seeds are said to be "naked" since they lack a particular sort of protective covering characteristic of Anthophyta. Cycadophyta are therefore said to be "gymnospermous". Genus Zamia

Zamia (cardboard "palm")

Zamia (cardboard "palm")--megasporangiate strobilus

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