单词 | Cycadopsida |
释义 | Cycadopsida (extremely rare) n WORD FAMILY Cycadopsida 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|Hyper Cycadophyta, Cycadophytina, class Cycadopsida, subdivision Cycadophyta, subdivision Cycadophytina class (biology) a taxonomic group containing one or more orders |
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