Additional
Information: The Gnetophyta are a division of the plant kingdom, included among the gymnosperms. Living representatives are found in 3 families in the Class Gnetopsida, Order Gnetales. These three families are Gnetacaea (Gneturns), Welwitschiaceae (Welwitschia), and
Gnetophyta: An Enigmatic Group of Seed Plants Gnetophyta: An Enigmatic Group of Seed Plants: Slide show introduction to the group. (Gnetophyta) http://www.biology.ualberta.ca/courses.hp/bot511/
Gnetophyta Gnetophyta: A few images of each family. (Gnetophyta) http://www.science.siu.edu/landplants/Gnetophyta/gnetophyta.html
Phylum Gnetophyta (Vessel Bearing Gymnosperms) Phylum Gnetophyta (Vessel Bearing Gymnosperms): Characteristics of the group, with representative images. (Gnetophyta) http://botit.botany.wisc.edu/courses/systematics/Phyla/Gnetophyta/Gnetophyta.html