Webum > Science > Biology > Flora and Fauna > Plantae > Gnetophyta Ephedraceae Gnetum Welwitschia Gnetophyta A few images of each family. Gnetophyta: An Enigmatic Group of Seed Plants Slide show introduction to the group. Phylum Gnetophyta (Vessel Bearing Gymnosperms) Characteristics of the group, with representative images. Help build the biggest human edited directory on the internet Add your website - Open Directory Project - Become an editor