Class Gnetopsida, also known as the gnetophytes, is a group of gymnosperms that includes just three genera: Gnetum, Ephedra, and Welwitschia. While this class has a specific name and classification in the scientific community, there are also several synonyms that can be used to refer to these unique plants. One such term is "gnetophytes" which is a more general term for this plant group. Another synonym is "Ephedraceae" which refers specifically to the Ephedra genus. Lastly, "Welwitschiaceae" is another synonym that is used to refer specifically to the Welwitschia genus. No matter the name used, these plants remain a fascinating subject for botanists and casual observers alike.