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subdivision Cycadophytina

資料來源 : WordNet®

subdivision Cycadophytina
     n : palmlike gymnosperms: includes the surviving order Cycadales
         and several extinct orders; possibly not a natural group;
         in some systems considered a class (Cycadopsida) and in
         others a subdivision (Cycadophytina or Cycadophyta) [syn:
          {Cycadopsida}, {class Cycadopsida}, {Cycadophytina}, {Cycadophyta},
          {subdivision Cycadophyta}]
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