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双韧管状中柱
释义
双韧管状中柱
Encyclopedia
理学
〔植物形态与结构〕
释
amphiphloic siphonostele
双韧管状中柱
环状木质部的内、外两边均有韧皮部的中柱。中央具髓的管状中柱的一种。如蚌壳蕨属(Dicksonia)植物根状茎中的中柱。
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