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)
piante da fiore gimnosperme; presunto legame tra conifere e angiosperme; in alcuni sistemi classificati come classe (Gnetopsida) e in altri come suddivisione (Gnetophytina o Gnetophyta)