The plant division Gnetophyta or gnetophytes comprise three related families of woody plants grouped in the gymnosperms. The gnetophytes differ from other gymnosperms in having vessel elements as in the flowering plants (Angiosperms or Magnoliophytes). The living Gnetophyta comprise three genera: Gnetum Welwitschia Ephedra Gnetum species are mostly woody climbers in tropical forests. However, the most well-known member of this group, Gnetum gnemon,'s a tree. Its seeds are used to produce a… (More on Gnetopsida)