Gnetophyta n 1: 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: {Gnetopsida}, {class Gnetopsida}, {Gnetophytina}, {subdivision Gnetophytina}, {Gnetophyta}]