资料来源 : WordNet®

subdivision Pinophytina
     n : most conifers: in some systems classified as a class
         (Pinopsida) and in others as a subdivision (Pinophytina);
         used in some classifications for one of five subdivisions
         of Gymnospermophyta [syn: {Pinopsida}, {class Pinopsida},
          {Pinophytina}]