Gnetopsida
       n : gymnospermous flowering plants; supposed link between
           conifers and angiosperms; in some systems classified as a
           class (Gnetopsida) and in others as a subdivision
           (Gnetophytina or Gnetophyta) [syn: class Gnetopsida, Gnetophytina,
            subdivision Gnetophytina, Gnetophyta]