资料来源 : WordNet®

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