The plant division of Gnetophyta is made up of gymnosperms from the kingdom Plantae.
Gnetophytes are known to be most closely related to flowering plants and are broken down into three classes: Ephedrales, Gnetales,
and Welwitschiales. All three of them have embryos with two cotyledons and exhibit double fertilization. Gnetales consist
of a single genus and are tetrasporic. Welwitschiales are also tetrasporic but have gigantic taproots. Finally, Ephedrales
are monosporic and produce supernumerary embryos.